United States v. Payward Ventures, Inc. (Kraken), Order granting in part IRS John Doe summons petition, No. 3:23-mc-80029, Dkt. 34 (Part 1 of 2)

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2023-06-30

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Research, not advice. Part of the Bitcoin research archive (October 2026). Claims labelled unverified, contested or fringe are reported, not endorsed; statuses of bills and rules are as of the date checked. Government, court and patent records are public domain; the research notes are CC BY 4.0.

Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 1 of 51

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                                   5                                  UNITED STATES DISTRICT COURT

                                   6                                 NORTHERN DISTRICT OF CALIFORNIA

                                   7
                                            UNITED STATES OF AMERICA,
                                   8                                                        Case No. 23-mc-80029-JCS
                                                        Plaintiff,
                                   9
                                                  v.                                        ORDER GRANTING IN PART AND
                                  10                                                        DENYING IN PART PETITION TO
                                            PAYWARD VENTURES, INC.,                         ENFORCE IRS SUMMONS
                                  11
                                                        Defendant.                          Re: Dkt. Nos. 1, 17, 19, 24, 26
                                  12

 United States District Court
                                  13

                                  14   I.      INTRODUCTION
                                  15           This case involves a summons issued by the Internal Revenue Service (“IRS”) as to

Northern District of California
                                  16   Payward Ventures, Inc. and subsidiaries (collectively, “Kraken”), an online cryptocurrency

                                  17   exchange platform, that the Court preliminarily approved in a prior proceeding, In the Matter of

                                  18   the Tax Liabilities of John Does, Case No. 21-cv-02201-JCS (N.D. Cal.) (“Kraken I”). After

                                  19   Kraken failed to comply with the summons, the United States of America (“the Government” or

                                  20   “the United States”) initiated the instant action by filing a petition to enforce the summons

                                  21   pursuant to 26 U.S.C. §§ 7402(b) and 7604(a) (“Petition”). The Court issued an order to show

                                  22   cause why the Petition should not be enforced and the parties have provided briefing in response.

                                  23   A hearing on the Petition was held on June 9, 2023. For the reasons set forth below, the Court

                                  24   GRANTS in part and DENIES in part the Petition. 1

                                  25

                                  26

                                  27
                                       1
                                  28    The parties have consented to the jurisdiction of a United States magistrate judge pursuant to 28
                                       U.S.C. § 636(c).
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                                   1   II.      BACKGROUND 2

                                   2            A.   Kraken
                                   3            Kraken “operate[s] a digital currency exchange under the trade name Kraken through the

                                   4   website www.kraken.com [https://perma.cc/3A4V-8TWG].” Kraken I, First Cincotta Decl. ¶ 55.

                                   5   “A digital currency exchange functions much like a traditional currency exchange, except it deals

                                   6   with the conversion of cryptocurrency for traditional currency or vice versa, as well as the

                                   7   exchange of one cryptocurrency for another cryptocurrency.” Id. ¶ 18. Kraken offers its services

                                   8   to both U.S. and international users in more than 190 countries. Kraken II, dkt. no. 19-4

                                   9   (Declaration of Todd Siemers in Support of Payward Ventures, Inc.’s Opposition to Petition to

                                  10   Enforce Internal Revenue Service Summons) (“Siemers Decl.”) ¶ 4.

                                  11            Kraken offers a variety of account levels and types of services, and the type of information

                                  12   users must provide to register for an account depends on the type of account they are registering

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                                  13   for. Siemers Decl. ¶¶ 7-9; Kraken II, Cincotta Petition Decl. ¶¶ 70-76. Kraken data engineer

                                  14   Todd Siemers describes the requirements for registering accounts at Kraken’s different levels of

                                  15   service as follows:

Northern District of California
                                                       5. To use Kraken’s exchange services, a user must first open an
                                  16                   account. Kraken currently offers several different levels of accounts:
                                                       Starter, Express, Intermediate, and Pro. In general, Starter and
                                  17                   Express accounts offer more limited services and thus require lower
                                                       levels of verification by the user. Intermediate and Pro accounts, on
                                  18                   the other hand, permit a wider variety of funding methods and
                                                       transaction types and have higher withdrawal and transaction limits.
                                  19                   Consequently, Intermediate and Pro account users are required to
                                                       provide additional verification. During the 2016 to 2020 timeframe,
                                  20                   all account levels required the user to input certain identity
                                                       information, including first and last name, date of birth, address, email
                                  21                   address, and phone number.
                                  22

                                  23   2
                                        The Government has supplied a series of declarations in support of the summons in Kraken I and
                                  24   the Petition in this action by Supervisory Internal Revenue Agent Karen Cincotta (“Agent
                                       Cincotta”). These declarations are referred to as follows: Kraken I, dkt. no. 1-2 (Declaration of
                                  25   Karen Cincotta in Support of Ex Parte Petition for Leave to Serve “John Doe” Summons)
                                       (“Kraken I, First Cincotta Decl.”); Kraken I, dkt. no. 8-1 (Second Declaration of Karen Cincotta in
                                  26   Support of Ex Parte Petition for Leave to Serve “John Doe” Summons (“Kraken I, Second
                                       Cincotta Decl.”); United States v. Payward Ventures, Inc., Case No. 23-mc-80029-JCS (N.D. Cal.)
                                  27   (“Kraken II”), dkt. no. 1-1 (Declaration of Karen Cincotta in Support of Petition to Enforce
                                       Internal Revenue Summons (“Kraken II, Cincotta Petition Decl.”)); Kraken II, dkt. no. 26-2
                                  28   (Second Declaration of Karen Cincotta in Support of United States’ Petition to Enforce Internal
                                       Revenue Service Summons, (“Kraken II, Cincotta Reply Decl.”).
                                                                                          2
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                                                      6. To register for either an Intermediate or Pro account, the user is
                                   1                  required to confirm their identity and physical address by uploading
                                                      an identification document (such as a passport or driver’s license) and
                                   2                  proof of residence. Pro account holders are additionally required
                                                      to complete a Know-Your-Customer Questionnaire, which, among
                                   3                  other things, asks questions about the account holder’s occupation,
                                                      source of income, and intended use of the account.
                                   4
                                                      7. Starter, Express, and Intermediate accounts are available only to
                                   5                  individuals, while the Pro account can be held by either an individual
                                                      or a business.
                                   6

                                   7   Siemers Decl. ¶¶ 7-9.

                                   8          According to Agent Cincotta, under Kraken’s terms of use, verification requirements for

                                   9   all three levels available prior to 2021 – Starter, Intermediate and Pro 3 – include two-factor

                                  10   authentication for login; email address; full name; date of birth; phone number; and physical

                                  11   address. Kraken II, Cincotta Petition Decl. ¶ 74. “In addition, valid ID, proof of residence,

                                  12   occupation, and a taxpayer ID number (for U.S. clients) are required for intermediate-level and

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                                  13   pro-level accounts” and “[a]n identification confirmation photo may also be required as part of

                                  14   either intermediate-level or pro-level account verification.” Id. ¶ 75. She states that “[n]o

                                  15   taxpayer ID number is required for starter-level accounts.” Id. Agent Cincotta notes, however,

Northern District of California
                                  16   that “[t]he oldest information the IRS has relating to Kraken’s account verification requirements

                                  17   is from August 2019.” Id. ¶ 84. 4

                                  18          Agent Cincotta describes the types of transactions that can be conducted at the different

                                  19   account levels as follows:
                                                      None of the account levels place[s] any restrictions on trading volume
                                  20                  or value. This means that an individual with a starter account can trade
                                                      cryptocurrency in unlimited amounts (and generate significant
                                  21                  amounts of taxable gain) without needing to provide a taxpayer ID
                                                      number. All three account levels permit the user to trade on margin,
                                  22                  although limits are placed based on account level, and all three
                                                      account levels permit the user to earn additional cryptocurrency by
                                  23                  participating in the running and maintenance of blockchain. The
                                                      intermediate and pro levels also allow users access to additional
                                  24                  trading options such as futures trading and over-the-counter trading.
                                  25
                                       3
                                  26     It is not clear when the Express account discussed by Mr. Siemers in his declaration was created.
                                       Agent Cincotta does not discuss that level of account in her declarations. At the hearing, Kraken
                                  27   stipulated that the Express account is a type of starter-level account.
                                       4
                                         At the hearing, Kraken stipulated that it does not require users to provide a taxpayer ID for
                                  28   Starter and Express accounts and that it only started collecting that information as to the
                                       Intermediate and Pro accounts in 2019.
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                                   1   Id. ¶ 77; see also Kraken I, Second Cincotta Decl., ¶ 23 (“All three account levels permit the user

                                   2   to trade on margin, although limits are placed based on account level, and all three account levels

                                   3   permit the user to earn additional cryptocurrency by participating in staking.”); Kraken I, dkt. no.

                                   4   8 (United States’ Response to Order to Show Cause Why Petition Should Not be Denied (“Kraken

                                   5   I, Response”) at 7 n. 3 (“‘Staking,’ more specifically ‘on-chain staking’ is a process through which

                                   6   a user holding certain types of cryptocurrency can participate indirectly in the validation and

                                   7   confirmation of cryptocurrency transactions to the blockchain by ‘staking’ their units. While

                                   8   staked, the user cannot sell or withdraw the units but can earn rewards (payouts) in return for

                                   9   staking.”).

                                  10        B.       The IRS Investigation
                                  11          Agent Cincotta describes two government reports identifying tax compliance issues related

                                  12   to cryptocurrency – one by the Government Accountability Office (“GAO”) completed in 2013

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                                  13   and another by the Treasury Inspector General for Tax Administration (“TIGTA”) completed in

                                  14   2016. Kraken I, First Cincotta Decl. ¶¶ 5-6; Kraken II, Cincotta Petition Decl. ¶¶ 26-27. In the

                                  15   2013 study, the GAO “identified several tax compliance risks associated with virtual currencies,

Northern District of California
                                  16   ranging from lack of knowledge of tax requirements and uncertainty over how to report virtual

                                  17   currency transactions to deliberate underreporting of income and tax evasion.” Kraken II, Cincotta

                                  18   Petition Decl. ¶ 27. The 2016 TIGTA study found that “taxpayers’ use of virtual currencies,

                                  19   including cryptocurrencies, had expanded significantly in recent years” and that “while there are

                                  20   legitimate reasons to use virtual currency . . . some virtual currencies are . . . popular because the

                                  21   identities of the parties involved are generally anonymous, leading to a greater possibility of their

                                  22   use in illegal transactions.” Id. ¶ 27.

                                  23             Agent Cincotta also offers more general evidence of possible tax noncompliance by

                                  24   cryptocurrency users. First, she points to the results of a 2019 study using data from 2011-2013

                                  25   indicating that “the overall rate of underreporting of income that was not subject to third-party

                                  26   information reporting was 55 percent, compared to 5 percent for amounts subject to substantial

                                  27   information reporting but no withholding, and 1 percent for amounts subject to substantial

                                  28   information reporting and withholding.” Id. ¶ 33. Second, she cites to the IRS’s determination
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                                   1   that only 800 to 900 taxpayers per year filed tax returns with a property description related to

                                   2   bitcoin or virtual currency in the period between 2013 and 2015, even though Coinbase, another

                                   3   cryptocurrency exchange (discussed further below), had “serviced more than 5.9 million

                                   4   customers and handled more than $6 billion in transactions” in the same period. Id. ¶ 36.

                                   5   According to Agent Cincotta, the IRS has found that although the number of taxpayers reporting

                                   6   cryptocurrency has increased since that time (4,164 taxpayers in 2016, 88,040 for 2017, 93,848 in

                                   7   2018, 102,278 in 2019, 253,265 in 2020, and 842,888 in 2021), “these numbers still fall far short

                                   8   of what would be expected given the number of users, transactions, and value that the virtual

                                   9   currency exchanges publicize occur on an annual basis.” Id. ¶ 37.

                                  10          According to Agent Cincotta, in response to concerns about cryptocurrency tax

                                  11   noncompliance, the IRS expanded its Electronic Payment Systems Initiative (“EPSI”), which was

                                  12   begun in 2005 to identify U.S. taxpayers who use electronic funds transfer and payment systems

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                                  13   for tax avoidance purposes, “to address U.S. taxpayers who use virtual currencies for tax

                                  14   avoidance purposes, recognizing that some U.S. taxpayers use such currencies to expatriate and

                                  15   repatriate funds to and from offshore accounts.” Kraken I, First Cincotta Decl. ¶ 7; Kraken II,

Northern District of California
                                  16   Cincotta Petition Decl. ¶¶ 28-29. As part of this initiative, Agent Cincotta states, the IRS

                                  17   established a Virtual Currency Issue Team (“VCIT”). Kraken I, First Cincotta Decl. ¶ 8; Kraken

                                  18   II, Cincotta Petition Decl. ¶ 29. “The VCIT was established to study the issue and then consider

                                  19   the compliance impact related to virtual currencies.” Id. According to Agent Cincotta, the

                                  20   summons at issue in this case is “one of the tools being used in the investigation.” Kraken II,

                                  21   Cincotta Petition Decl. ¶ 29; see also id. ¶ 30 (“[T]he IRS is pursuing this John Doe summons to

                                  22   Kraken in order to obtain customer and transactional information belonging to members of the

                                  23   John Doe class that can be used to conduct examinations of persons that may not have complied

                                  24   with the internal revenue laws.”).

                                  25          Agent Cincotta explains in her declarations that “digital currency exchanges . . . provide

                                  26   valuable information about an individual customer’s cryptocurrency transactions that can be used

                                  27   in conjunction with other publicly available blockchain information to adequately examine

                                  28   whether an individual has complied with internal revenue laws.” Kraken I, First Cincotta Decl. ¶
                                                                                         5
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                                   1   29; see also Kraken II, Cincotta Petition Decl. ¶ 25. She describes various ways cryptocurrency

                                   2   use can relate to tax compliance:
                                           • Wages, salary, or other income paid to an employee with virtual currency is reportable by
                                   3
                                              the employee as ordinary income and subject to employment taxes paid by the employer.
                                   4       • Virtual currency received by a self-employed individual in exchange for goods or services
                                              is reportable as ordinary income and is subject to self-employment tax. This would include
                                   5          a person who “mines” virtual currency as a trade or business.
                                           • Virtual currency received in exchange for goods or services by a business is reportable as
                                   6          ordinary income.
                                   7       • Gain on the exchange of virtual currency for other property is generally reportable as a
                                              capital gain if the virtual currency was held as a capital asset and as ordinary income if it is
                                   8          property held for sale to customers in a trade or business.
                                           • Gain on the sale of property held as a capital asset in exchange for virtual currency is
                                   9          reportable as a capital gain.
                                  10       • Payments made in virtual currency are subject to information reporting requirements to the
                                              same extent as payments made in fiat currency or instruments denominated in fiat
                                  11          currency.

                                  12   Kraken I, First Cincotta Decl., ¶ 31. She also provides five specific examples of taxpayers who,

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                                  13   based on information available to the IRS, are Kraken users and have violated the tax code. Id. ¶¶
                                  14   70-74. Finally, she points to public records reflecting that some Kraken users have routed the
                                  15   proceeds of criminal activity through Kraken. Id. ¶¶ 75-78.

Northern District of California
                                  16        C.    Coinbase
                                  17          The summons in this case is similar to the summons the Government sought to enforce in
                                  18   United States v. Coinbase, Inc., No. 17-cv-01431-JSC, 2017 WL 5890052, at *6–7 (N.D. Cal.
                                  19   Nov. 28, 2017) (“Coinbase”)). Kraken points to the Coinbase court’s approval of a much
                                  20   narrower summons than the Government originally requested in that case while the Government
                                  21   questions the approach that was taken by the Coinbase court and asserts that it hampered the IRS’s
                                  22   investigation.
                                  23          In Coinbase, the IRS served a summons on Coinbase, Inc., a virtual currency exchange,
                                  24   “seeking records regarding nearly all of Coinbase’s customers for a several-year period.” 2017
                                  25   WL 5890052, at *2. In the initial summons, the Government “requested nine categories of
                                  26   documents including: complete user profiles, know-your-customer due diligence, documents
                                  27   regarding third-party access, transaction logs, records of payments processed, correspondence
                                  28   between Coinbase and Coinbase users, account or invoice statements, records of payments, and
                                                                                          6
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                                   1   exception records produced by Coinbase’s AML system.” Id. at *1. After Coinbase refused to

                                   2   comply and the Government brought a petition to enforce – but before the court had ruled on the

                                   3   petition – the IRS issued a narrower summons that did “not include users: (a) who only bought and

                                   4   held bitcoin during the 2013-15 period; or (b) for which Coinbase filed Forms 1099-K during the

                                   5   2013-15 period.” Id. at *2. The information requested in the narrowed summons was largely the

                                   6   same as the original summons except that the Government dropped the request for exception

                                   7   records produced by Coinbase’s AML system. Id. The narrowed summons was challenged by

                                   8   Coinbase and four Doe intervenors. Id.

                                   9          Applying the standard for enforcing an IRS summons set forth in United States v. Powell,

                                  10   379 U.S. 48 (1964), discussed further below, the court in Coinbase found that only two of the

                                  11   Powell factors were in dispute: whether the Government’s summons served a legitimate purpose;

                                  12   and whether the information requested in the summons was relevant to that purpose. Id. at *4. As

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                                  13   to the first factor, the court found that the summons had a legitimate investigative purpose of

                                  14   “investigating the reporting gap between the number of virtual currency users Coinbase claims to

                                  15   have had during the summons period and U.S. bitcoin users reporting gains or losses to the IRS

Northern District of California
                                  16   during the summoned years.” Id. (internal quotations and citations omitted). The court pointed to

                                  17   evidence offered by the Government that “Coinbase is the largest U.S. exchange of bitcoin into

                                  18   dollars with at least 5.9 customers served and 6 billion in transactions while only 800 to 900

                                  19   taxpayers a year have electronically filed returns with a property description related to bitcoin

                                  20   from 2013 through 2015.” Id. It found that “[t]his discrepancy creates an inference that more

                                  21   Coinbase users are trading bitcoin than reporting gains on their tax returns.” Id. It noted further,

                                  22   “[t]hat only 800 to 900 taxpayers reported gains related to bitcoin in each of the relevant years and

                                  23   that more than 14,000 Coinbase users have either bought, sold, sent or received at least $20,000

                                  24   worth of bitcoin in a given year suggests that many Coinbase users may not be reporting their

                                  25   bitcoin gains.” Id.

                                  26          Turning to the relevance factor, the court in Coinbase recognized that “the Coinbase

                                  27   account holder’s identity and transaction records will permit the Government to investigate

                                  28   whether the holder had taxable gains that were not properly declared.” Id. at *6. The court
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                                   1   found, however, that the information requested under the Government’s summons was broader

                                   2   than that:
                                                      [T]he Government . . . also seeks account opening records, copies of
                                   3                  passports or driver’s licenses, all wallet addresses, all public keys for
                                                      all accounts/wallets/vaults, records of Know-Your-Customer
                                   4                  diligence, agreements or instructions granting a third-party access,
                                                      control, or transaction approval authority, and correspondence
                                   5                  between Coinbase and the account holder. The Government claims to
                                                      need these records to verify an account holder’s identity and
                                   6                  determine if the holder used others to make transactions on the
                                                      account holder’s behalf. However, at this stage, where the
                                   7                  Government is seeking records on over 10,000 account holders, these
                                                      requests seek information than is “broader than necessary.” See
                                   8                  Bisceglia, 420 U.S. at 151. The first question for the IRS is whether
                                                      an account holder had a taxable gain. If the account holder did not,
                                   9                  then correspondence between Coinbase and a user is not even
                                                      potentially relevant. Similarly, while the Government needs an
                                  10                  account holder’s name, date of birth, taxpayer identification and
                                                      address to determine if a taxable gain was reported, it only needs
                                  11                  additional identity information such as copies of passports and
                                                      drivers’ licenses or “Know Your Customer” due diligence if there is
                                  12                  potentially a taxable gain and if there is some doubt as to the

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                                                      taxpayer’s identity. If there is not, these additional records will not
                                  13                  shed any light on a legitimate investigation.
                                  14   2017 WL 5890052, at *6. The court rejected the Government’s argument that its summons

                                  15   properly “included such broad swaths of records . . . so that it [would] not need to return to court

Northern District of California
                                  16   to ask for them if and when needed[,]” citing its duty to ensure that the Government was not

                                  17   collecting “thousands and thousands of personal records unnecessarily.” Id. It further observed

                                  18   that “[i]f the Government later determines that it needs more detailed records on a taxpayer, it can

                                  19   issue the summons directly to the taxpayer or to Coinbase with notice to a named user—a process

                                  20   preferable to a John Doe summons.” Id.

                                  21           In Kraken I and in this action, the Government rejects what it describes as Coinbase’s

                                  22   “novel summons process by which the IRS had to pursue its investigation in phases,” arguing that

                                  23   such an approach is not called for under 26 U.S.C. § 7609(f), governing Doe summonses, and

                                  24   would, as a practical matter, require the IRS to issue multiple John Doe summonses to the same

                                  25   third-party, which it asserts would be “extremely burdensome and time consuming.” Kraken I,

                                  26   Response at 2. According to the Government, this approach is not practical in light of the statute

                                  27   of limitations that applies to information obtained from a Doe summons, which under 26 U.S.C. §

                                  28   6501(a) and 26 U.S.C. § 7609(e)(2) is only tolled while responsive information is being produced
                                                                                         8
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                                   1   under the summons. Id. at 6 n. 1.

                                   2          Moreover, the Government contends, the basic information provided under the Coinbase

                                   3   summons is insufficient due to the complexity of the tax code violations it is investigating:

                                   4                  Cryptocurrency is treated as property for federal tax purposes. See
                                                      Notice 2014-21, 2014-16 I.R.B. 938, 2014 WL 1224474 (Mar. 26,
                                   5                  2014). When reporting gains and losses from the sale of
                                                      cryptocurrency, a taxpayer may use different methods for calculating
                                   6                  that gain or loss. For example, a taxpayer may use the specific
                                                      identification method to pair the sale of a specific unit of
                                   7                  cryptocurrency against a specific acquisition. See IRS Virtual
                                                      Currency FAQs, FAQ#39 & 40, available at: Frequently Asked
                                   8                  Questions on Virtual Currency Transactions |Internal Revenue
                                                      Service (irs.gov). Alternatively, where a taxpayer has not used the
                                   9                  specific identification method or lacks records to fully support the use
                                                      of that method, the taxpayer must rely on the so-called “first-in-first-
                                  10                  out” accounting method that simply pairs the sale of a unit of
                                                      cryptocurrency against the oldest-acquired unit chronologically. Id. at
                                  11                  FAQ#41. These approaches allow a taxpayer flexibility in how they
                                                      calculate gains or losses on the sale of cryptocurrency units held as
                                  12                  capital assets. As a result, the IRS cannot make a “taxable gain”

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                                                      determination by looking at an account holder’s transaction
                                  13                  information in isolation. The IRS must (1) identify the account holder,
                                                      (2) determine whether that individual filed a tax return for the relevant
                                  14                  tax year, (3) determine whether that individual reported
                                                      cryptocurrency transactions on that return, and (4), if so, whether
                                  15                  what was reported, or the approach taken in reporting the information,

Northern District of California
                                                      indicates compliance with the internal revenue laws.
                                  16

                                  17                  This analysis can become even more complicated because many
                                                      taxpayers operating in the cryptocurrency space have accounts at
                                  18                  more than one cryptocurrency exchange and also make use of
                                                      personal user wallets. For example, the IRS has conducted
                                  19                  examinations where the taxpayer involved had cryptocurrency
                                                      transactions at three or more distinct exchanges and, at times, upwards
                                  20                  of ten exchanges. [Kraken I,] Second [Cincotta] Declaration at ¶ 6.
                                                      Current tax reporting requirements do not require a taxpayer to
                                  21                  identify on their tax return on which cryptocurrency exchange taxable
                                                      transactions occurred. Id. This makes rooting out tax non-compliance
                                  22                  much more complex than simply reviewing the account transaction
                                                      information for one account holder on one exchange in isolation. . .
                                  23                  .[H]aving additional specific information about the nature of an
                                                      account holder’s non-transactional activity is necessary when the IRS
                                  24                  is making its initial determination about who the correct taxpayer is,
                                                      and in what other activity that individual may be engaging. This
                                  25                  information is required for the IRS to reach a reasonably-accurate
                                                      conclusion about tax compliance. The IRS’s investigation is not
                                  26                  solely focused on identifying tax non-compliance for account holders
                                                      at a single exchange like Kraken, but rather to identify tax non-
                                  27                  compliance for individuals transacting in cryptocurrency with
                                                      accounts at that exchange who may have additional accounts at other
                                  28                  exchanges.
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                                   1   Kraken I, Response at 3-4.

                                   2           According to Agent Cincotta, because the court in Coinbase limited the identifying

                                   3   information Coinbase was required to produce to “basic information such as name, date of birth,

                                   4   taxpayer ID number, and physical address[,]” there are still 750 taxpayers – out of approximately

                                   5   13,000 Coinbase customers who received notice of the required disclosures – that it has not been

                                   6   able to identify, accounting for “more than $100 million in gross proceeds from the sale of

                                   7   cryptocurrency during the years covered by the Coinbase John Does summons.” Kraken II,

                                   8   Cincotta Petition Decl. ¶¶ 49-50. 5 She further states that because of the “partial enforcement of

                                   9   the summons in Coinbase” the IRS was “prevented . . . from having discussions with Coinbase

                                  10   about what other additional identifying information it had in its records that could be used to help

                                  11   the IRS positively identify the unidentifiable users, like telephone numbers or email addresses.”

                                  12   Id. ¶ 50. As to the Coinbase users the IRS was unable to identify, Agent Cincotta attributes these

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                                  13   failures largely to the lack of a taxpayer ID numbers. Id. ¶ 47. Agent Cincotta states, “[w]here

                                  14
                                       5
                                  15    Agent Cincotta provides a detailed explanation of the difficulties the IRS had identifying some

Northern District of California
                                       Coinbase account holders, stating as follows:
                                  16
                                       43. In reviewing the information provided in response to the John Doe summons issued to
                                  17   Coinbase, the IRS ran into several problems when trying to positively identify the account holders.

                                  18   44. The information provided by Coinbase lacked taxpayer ID numbers for approximately
                                       10% of the users (over 1,300 taxpayers). There were also over 150 instances where the account
                                  19   data did not include a name and approximately 170 instances where the name was a pseudonym
                                       rather than an actual name. There were over 500 instances where no date of birth information was
                                  20   provided and roughly 1,000 instances where no physical address information was provided.

                                  21   45. The IRS worked with Coinbase to attempt to obtain the missing information. Coinbase
                                       was able to provide some of the missing information, reducing the unknown names to only a few.
                                  22   Missing address information was reduced to approximately 650 instances and missing date of birth
                                       information was reduced to slightly below 500. Coinbase was not able to provide any of the
                                  23   missing taxpayer ID numbers.

                                  24   46. During discussions with Coinbase, it explained that some of the account information may
                                       be missing because it had not necessarily been collected for some of the oldest accounts. As
                                  25   discussed in paragraph 44 above, basic identity information such as name, taxpayer ID number,
                                       date of birth, and physical address was insufficient in these situations to positively identify the
                                  26   actual taxpayer account holder.

                                  27   Kraken II, Cincotta Petition Decl. ¶¶ 43-46.

                                  28
                                                                                         10
                                           Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 11 of 51

                                   1   there was no taxpayer ID number and other information was also missing, it was nearly impossible

                                   2   for the IRS to positively identify the relevant taxpayer.” Id.

                                   3          D.     Procedural Background
                                   4            On March 30, 2021, the United States filed an ex parte petition seeking the Court’s

                                   5   permission to serve an administrative summons (“original summons”) upon Kraken to obtain

                                   6   information about “John Does[,]” defined as “United States persons who, directly or indirectly had

                                   7   authority over any combination of accounts held with Payward Ventures, Inc., d/b/a Kraken or

                                   8   Kraken.com, or its predecessors, subsidiaries, divisions, or affiliates (collectively, ‘Kraken’) with

                                   9   at least the equivalent of $20,000 in value of transactions (regardless of type) in cryptocurrency in

                                  10   any one year, for the period January 1, 2016 through December 31, 2020.” Kraken I, dkt. no. 1

                                  11   (March 30, 2021 ex parte petition) & 1-3 (original summons). 6

                                  12

 United States District Court
                                       6
                                  13       The original summons requested the following information:

                                  14   User Identity Information

                                  15          1. Account registration records for each account owned or controlled by the User

Northern District of California
                                              including, but not limited to, complete user profile, account application, records
                                  16          permitting third-party access, history of changes to user profile from account
                                              inception, complete user preferences, complete user history (including confirmed
                                  17          devices, internet protocol addresses, and account activity), complete user
                                              payment methods, and any other information related to the funding sources for
                                  18          the account, regardless of date. This request does not include passwords, pins,
                                              private keys, security settings, and account recovery information.
                                  19
                                              2. Any other records of Know-Your-Customer due diligence performed with respect
                                  20          to the User not included in paragraph 1, above, regardless of date.

                                  21          3. All correspondence between Kraken and the User or any third party with access
                                              to the account pertaining to the account, including but not limited to e-mails, chat
                                  22          support logs, telephone logs or recordings, letters, or other memoranda of
                                              communication.
                                  23
                                              4. All exception reports produced by your anti-money laundering (“AML”) system,
                                  24          and all records of investigation of such exceptions. This request does not include
                                              any suspicious activity reports (“SAR”) that were ultimately generated as a
                                  25          consequence of an AML alert or any other information that would reveal the
                                              existence of a SAR.
                                  26
                                       Transaction Activity
                                  27
                                              5. All records of activity in the User’s account including, but not limited to:
                                  28
                                                   a. Records identifying the date and time, amount, and U.S. dollar value of
                                                                                           11
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 12 of 51

                                   1          In response to the Government’s ex parte petition in Kraken I, the Court issued an order to

                                   2   show cause why the petition should not be denied on the basis that the summons was overbroad.

                                   3   Id., dkt. no. 6. In the order to show cause, the Court observed that “[i]n addition to basic

                                   4   registration, identification, and transaction information, the proposed summons [sought] broad

                                   5   categories of information such as ‘complete user preferences,’ ‘[a]ny other records of Know-Your-

                                   6   Customer due diligence,’ and ‘[a]ll correspondence between Kraken and the User or any third

                                   7   party with access to the account pertaining to the account,’ among other similarly expansive

                                   8   requests.” Id. (quoting original summons, dkt. no. 1-3 at ECF p. 13). The Court further found that

                                   9   Agent Cincotta’s explanations for some of these categories of information “rest[ed] on conclusory

                                  10   assertions that such information ‘may be relevant in determining, and verifying, the identity of the

                                  11   account user’ or ‘revealing other accounts controlled by the same user.’” Id. (citation omitted).

                                  12          The Court noted in the order to show cause that “the Honorable Jacqueline Scott Corley

 United States District Court
                                  13   rejected the IRS’s position that similarly broad categories of information were relevant, and held

                                  14   that the IRS should first review basic user information and transaction histories before determining

                                  15   whether further subpoenas – either to the cryptocurrency exchange or to individual users – were

Northern District of California
                                  16   necessary.” Id. (citing Coinbase, 2017 WL 5890052, at *6-7). The Court ordered the

                                  17

                                  18           any purchase or sale of cryptocurrency for U.S dollar or foreign legal
                                               tender (fiat currencies) or other cryptocurrency;
                                  19
                                               b. Records identifying the date and time, value (or expense) of any lending,
                                  20           borrowing, or margin position entered into in the account;

                                  21           c. Records identifying the date and time, amount, U.S. dollar value,
                                               transaction hash (ID), and blockchain addresses for cryptocurrency units
                                  22           transferred into or out of the User’s account from another Kraken user or
                                                from outside of Kraken.
                                  23
                                               d. Records identifying the date and time, amount, and U.S. dollar value of
                                  24           any units of cryptocurrency received by the User in the account as a result
                                               of a chainsplitting event such as a hard fork or promotional event.
                                  25
                                            6. All records of account funding (deposits, withdrawals, or transfers) in U.S dollar
                                  26        or foreign legal tender, including transactions conducted through ACH transfers,
                                            wire or other electronic transfer, or any other form, and any and all invoices,
                                  27        billing statements, receipts, or other documents memorializing and describing
                                            such transactions.
                                  28
                                       Kraken I, dkt. no. 1-3 at ECF pp. 13-14.
                                                                                        12
                                           Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 13 of 51

                                   1   Government to specifically address in its response “why each category of information sought is

                                   2   narrowly tailored to the IRS’s investigative needs, including whether requests for more invasive

                                   3   and all-encompassing categories of information could be deferred until after the IRS has reviewed

                                   4   basic account registration information and transaction histories.” Id.

                                   5             Although the Government argued in its Response that this Court should not take the

                                   6   “phased” approach taken in Coinbase, it narrowed its proposed summons “to assuage potential

                                   7   concerns.” Kraken I, Response at 3. The most significant amendment was the removal of Request

                                   8   3 from the summons, which sought “[a]ll correspondence between Kraken and the User or any

                                   9   third party with access to the account pertaining to the account, including but not limited to e-

                                  10   mails, chat support logs, telephone logs or recordings, letters, or other memoranda of

                                  11   communication.” Kraken I, dkt. no. 1-3 at ECF pp. 13. Otherwise, the narrowed summons seeks

                                  12   largely the same information as the original summons. 7 This Court approved the proposed

 United States District Court
                                  13
                                       7
                                  14    The narrowed summons, which is the one the Government seeks to enforce in this action,
                                       requests “information regarding unknown U.S. taxpayers who directly or indirectly held or had
                                  15   control over any combination of user accounts at Payward Ventures, Inc. and Subsidiaries with at

Northern District of California
                                       least the equivalent of $20,000 in value of transactions (regardless of type) in cryptocurrency in
                                  16   any one year during January 1, 2016, through December 31, 2020.” Dkt. no. 1-2 at ECF p. 3. The
                                       requests in the summons are as follows:
                                  17
                                       User Identity Information
                                  18
                                            1.    Account user registration records for each account owned or controlled by the User
                                  19             including:

                                  20             a. User profile, User preferences, or account application information, regardless of how
                                                    it is labelled or maintained, as follows:
                                  21
                                                   i. Name (including full name, any pseudonym, or any user ID);
                                  22               ii. Date of Birth;
                                                   iii. Taxpayer Identification Number
                                  23               iv. Physical Address;
                                                   v. Telephone Number;
                                  24               vi. Email Address;

                                  25             b. History of all changes to the personal information identified above since the inception
                                                    of the account;
                                  26
                                                 c. Complete User history for internet protocol addresses used to access the account; and
                                  27

                                  28             d. Complete User payment methods (e.g., linked bank or credit card accounts) regardless
                                                    of date.
                                                                                    13
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 14 of 51

                                   1   summons, as narrowed, noting that “[a]ny further disputes as to the scope of the summons would

                                   2   benefit from adversarial briefing.” Kraken I, dkt. no. 9. The summons was served on Kraken on

                                   3   May 11, 2021. Kraken II, Cincotta Petition Decl. ¶ 5. “Despite discussions between the parties,

                                   4   however, Kraken refused to comply with the summons and has not produced the books, records,

                                   5   papers, and other data demanded in the summons.” Id. at ¶ 148. Consequently, the Government

                                   6   brought the instant action to enforce the summons.

                                   7

                                   8

                                   9      This request does not include passwords, pins, private keys, security settings, and account
                                          recovery information.
                                  10
                                          2. With respect to any Know-Your-Customer due diligence questionnaires completed by a
                                  11         User, information relating to the User’s employment, net worth, and source of wealth for
                                             individual Users, and for business Users, to the extent not provided in response to Request
                                  12         1, above, legal name, business address, country, website, contact information, industry,
                                             goods and services, government issued business registration or tax-identification number,

 United States District Court
                                  13         and source of funds[.]

                                  14      3. All exception reports produced by your anti-money laundering (‘AML’) system, and all
                                             records of investigation of such exceptions. This request does not include any suspicious
                                  15         activity reports (‘SAR’) that were ultimately generated as a consequence of an AML alert

Northern District of California
                                             or any other information that would reveal the existence of a SAR.
                                  16
                                       Transaction Activity
                                  17
                                          4. All records of activity in the User’s account including, but not limited to:
                                  18
                                               e. Records identifying the date and time, amount, and U.S. dollar value of any purchase
                                  19              or sale of cryptocurrency for U.S dollar or foreign legal tender (fiat currencies) or
                                                  other cryptocurrency;
                                  20
                                               f. Records identifying the date and time, value (or expense) of any lending, borrowing,
                                  21              or margin position entered into in the account;

                                  22           g. Records identifying the date and time, amount, U.S. dollar value, transaction hash
                                                  (ID), and blockchain addresses for cryptocurrency unit transferred into or out of the
                                  23              User’s account from another Kraken user or from outside of Kraken.

                                  24           h. Records identifying the date and time, amount, and U.S. dollar value of any units of
                                                  cryptocurrency received by the User in the account as a result of a chainsplitting event
                                  25              such as a hard fork or promotional event.

                                  26      5. All records of account funding (deposits, withdrawals, or transfers) in U.S dollar or foreign
                                             legal tender, including transactions conducted through ACH transfers, wire or other
                                  27         electronic transfer, or any other form, and any and all invoices, billing statements, receipts,
                                             or other documents memorializing and describing such transactions.
                                  28   Dkt. No. 1-2 (summons) at ECF pp. 7-8.
                                                                                       14
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 15 of 51

                                   1           As discussed further below, Kraken opposes enforcement of the summons, arguing that the

                                   2   Petition should be denied in its entirety because of its overbreadth and the heavy burden that

                                   3   compliance would impose on Kraken. It relies heavily on the fact that the summons in this case is

                                   4   broader than the one that was approved in Coinbase. The Government, in turn, argues that it has

                                   5   demonstrated there is a reasonable basis for enforcement of the summons, which it contends is

                                   6   narrowly tailored. It further contends that the limitations imposed by the court in Coinbase as to

                                   7   the scope of the summons were excessive and that the limitations the Government agreed to,

                                   8   without the involvement of the court, when negotiating with Coinbase have no bearing on whether

                                   9   the summons in this case is proper.

                                  10   III.    ANALYSIS
                                  11           A. The Motions to Seal
                                  12           Certain information about Kraken’s “internal technological capabilities surrounding the

 United States District Court
                                  13   organization, query and analysis of information on its systems” is the subject of motions to seal

                                  14   brought by Kraken (dkt. no. 19) and the Government (dkt. no. 26). Both motions are based on

                                  15   Kraken’s assertion that this information is “confidential and proprietary business information.”

Northern District of California
                                  16   Dkt. no. 19 at 2. However, the only support Kraken has offered for this assertion is a declaration

                                  17   of counsel that it is his “understanding” that disclosure of this information will create an

                                  18   “increased security risk.” Fondo Decl. (dkt. no. 19-1) ¶ 5. Fondo states, “This increased risk could

                                  19   jeopardize users’ digital assets, as well as Kraken’s goodwill and competitive standing with its

                                  20   clients in light of that threat. Revelation of this information could also put it at a significant

                                  21   competitive disadvantage if Kraken’s competitors were to understand the precise capabilities of its

                                  22   systems—not to mention affect the trade secret nature of those systems.” Id.

                                  23           These conclusory statements do not satisfy the heavy burden that must be met to justify

                                  24   sealing material in dispositive motion papers and attachments, which requires that the proponent

                                  25   of sealing such material articulate compelling reasons supported by specific factual findings. See

                                  26   Kamakana v. City & Cnty. of Honolulu, 447 F.3d 1172, 1178 (9th Cir. 2006). Moreover, although

                                  27   the Court invited Kraken to supply a supplemental declaration addressing its sealing requests,

                                  28   Kraken declined to do so. Accordingly, both sealing motions (dkt. nos. 19 and 26) are DENIED.
                                                                                          15
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 16 of 51

                                   1   The Court also denies as moot dkt. nos. 17 and 24, both of which were superseded by amended

                                   2   motions.

                                   3           B. Legal Standards Governing Enforcement of IRS Summonses
                                   4          Under 26 U.S.C. § 7602(a), the IRS may issue a summons for “ascertaining the correctness

                                   5   of any return, making a return where none has been made, determining the liability of any person

                                   6   for any internal revenue tax or . . . collecting any such liability. . . .” 26 U.S.C. § 7602(a). Where

                                   7   the summons is issued to a third party, notice must be given to the person named in the summons

                                   8   to allow them to intervene and bring a motion to quash if they oppose the summons. 26 U.S.C. §

                                   9   7609(a) & (b).

                                  10          To obtain a court order enforcing an IRS summons, the IRS must establish “good faith” by

                                  11   showing that the summons: (1) is issued for a legitimate purpose; (2) seeks information relevant to

                                  12   that purpose; (3) seeks information that is not already in the IRS’s possession; and (4) satisfies all

 United States District Court
                                  13   of the administrative steps set forth in the Internal Revenue Code.” United States v. Powell, 379

                                  14   U.S. 48, 57–58 (1964)). “[T]his showing need only be minimal . . . because the statute must be

                                  15   read broadly in order to ensure that the enforcement powers of the IRS are not unduly restricted.”

Northern District of California
                                  16   Liberty Fin. Servs. v. United States, 778 F.2d 1390, 1392 (9th Cir. 1985) (citing United States v.

                                  17   Balanced Financial Management, Inc., 769 F.2d 1440, 1443 (10th Cir.1985)).

                                  18          Once the IRS makes a prima facie case that the Powell factors are met, the taxpayer bears a

                                  19   “heavy” burden to show an abuse of process or lack of good faith on the part of the IRS. United

                                  20   States v. LaSalle Nat’l Bank, 437 U.S. 298, 316 (1978). “‘The taxpayer must allege specific facts

                                  21   and evidence to support [their] allegations of bad faith or improper purpose.’” Id. (quoting United

                                  22   States v. Jose, 131 F.3d 1325, 1328 (9th Cir. 1997)). Where such evidence is presented, the court

                                  23   must then “scrutinize[]” the summons “to determine whether it seeks information relevant to a

                                  24   legitimate investigative purpose, and the court may choose either to refuse enforcement or narrow

                                  25   the scope of the summons.” United States v. Goldman, 637 F.2d 664, 668 (9th Cir. 1980) (citing

                                  26   United States v. Bisceglia, 420 U.S. 141, 146 (1975)).

                                  27          Where an IRS summons is issued to a third party as a “John Doe” summons, that is, “does

                                  28   not identify the person with respect to whose liability the summons is issued[,]” such a summons
                                                                                         16
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 17 of 51

                                   1   “may be served only after a court proceeding in which the Secretary establishes that--

                                   2                  (1) the summons relates to the investigation of a particular person or
                                                          ascertainable group or class of persons,
                                   3

                                   4                  (2) there is a reasonable basis for believing that such person or group
                                                          or class of persons may fail or may have failed to comply with any
                                   5                      provision of any internal revenue law, and

                                   6
                                                      (3) the information sought to be obtained from the examination of the
                                   7                      records or testimony (and the identity of the person or persons
                                                          with respect to whose liability the summons is issued) is not
                                   8                      readily available from other sources.

                                   9   26 U.S.C. § 7609(f); see also 26 U.S.C. § 7609(h)(2) (providing that “[t]he determinations

                                  10   required to be made under subsections (f) and (g) shall be made ex parte and shall be made solely

                                  11   on the petition and supporting affidavits.”). Section 7609(f) further provides that the IRS may not

                                  12   issue a John Doe summons “unless the information sought to be obtained is narrowly tailored to

 United States District Court
                                  13   information that pertains to the failure (or potential failure) of the person or group or class of

                                  14   persons referred to in paragraph (2) to comply with one or more provisions of the internal revenue

                                  15   law which have been identified for purposes of such paragraph.” Id.

Northern District of California
                                  16          “Section 7609(f)’s criteria . . . constitute a procedural safeguard which Congress created to

                                  17   provide extra protection to unknown target taxpayers to whom the IRS cannot give notice.” United

                                  18   States v. Samuels, Kramer & Co., 712 F.2d 1342, 1346 (9th Cir. 1983). However, “Section

                                  19   7609(f) neither enlarges nor contracts the substantive rights against enforcement granted to all

                                  20   taxpayers under Powell.” Id. (citing In re Tax Liabilities of John Does, 688 F.2d 144,149 (2d Cir.

                                  21   1982); United States v. Pittsburgh Trade Exchange, Inc., 644 F.2d 302, 305 (3d Cir.1981)). Thus,

                                  22   “[n]otwithstanding the added protection sections 7609(f) and (h) provide against improper

                                  23   issuance of John Doe summonses . . . the sections do not expand beyond the Powell criteria the

                                  24   substantive grounds on which a record-keeping taxpayer can resist enforcement of a summons

                                  25   once it has been served.” Id.

                                  26        C.     The Significance of Coinbase
                                  27          As a preliminary matter, the Court notes that both sides have made statements that border

                                  28   on mischaracterizing the holding and legal significance of Coinbase. To the extent that Kraken
                                                                                         17
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 18 of 51

                                   1   implies that Coinbase establishes some set numerical limit on the number of cryptocurrency

                                   2   accounts that can be the subject of an IRS Doe summons, or more broadly, certain set parameters

                                   3   as to the types of information that can be the subject of an IRS summons issued to a

                                   4   cryptocurrency company, that is clearly not the case. As the Government points out, “John Doe

                                   5   summons class definitions take many different forms, depending on the legitimate needs of the

                                   6   investigation.” Kraken II, dkt. no. 26-3 (United States’ Response to Payward Ventures Inc.’s

                                   7   Opposition to Petition to Enforce Internal Revenue Service Summons) (“Kraken II, Reply”) at 2

                                   8   (citing Kraken II, Cincotta Reply Decl. ¶¶ 5-59). Thus, the Court recognizes that the limitations

                                   9   placed on the summons in Coinbase, while instructive, are not binding in this case.

                                  10          On the flip side, the Court rejects the Government’s assertion that “the phased, limited-

                                  11   information-review approach imposed in Coinbase is [not] what Powell or the statute requires.”

                                  12   Kraken II, Reply at 3. Rather, the Court finds that the limitations on the summons approved in

 United States District Court
                                  13   Coinbase are consistent with Powell and the statutory provisions that govern Doe summonses,

                                  14   requiring that such summonses be narrowly tailored. The fact that the Government might need to

                                  15   issue a second summons in order to make that showing as to some users and information does not

Northern District of California
                                  16   mean that Coinbase established a “two-step investigative approach” that is inconsistent with

                                  17   Powell. It is simply a reflection of the reality that the more speculative the relevance of particular

                                  18   types of information, the more likely it will be that a summons that requires the production of such

                                  19   information will not be narrowly tailored. Indeed, the Government acknowledges that as it

                                  20   conducts investigations, “each summons differ[s] in class definition and requests depending on the

                                  21   needs of the investigation and to reflect what the IRS ha[s] learned from each previous summons

                                  22   and production of information.” Kraken II, Reply at 2 (emphasis added).

                                  23          And while the Government goes to great lengths to persuade the Court that the limitations

                                  24   in Coinbase hampered its investigation, it ultimately determined the identities of all but 750 Does,

                                  25   out of approximately 13,000 accounts. See Kraken II, Cincotta Petition Decl. ¶¶ 43-50. While

                                  26   those remaining Does account for a significant dollar amount in gross proceeds from the sale of

                                  27   cryptocurrency during the years covered ($100 million), the Government offers no explanation for

                                  28   its failure to seek approval of a targeted summons directed at that much smaller group using the
                                                                                         18
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 19 of 51

                                   1   information obtained in the course of its investigation to meet the “narrowly tailored” requirement.

                                   2   At the hearing, the Government was unable to explain why it did not seek approval of a narrowly

                                   3   tailored follow-up summons in Coinbase. And notably, it did not contend that it was barred from

                                   4   seeking such a summons because of any statute of limitations. Because the Government did not

                                   5   issue a summons aimed at the remaining 750 Coinbase Does using the information obtained from

                                   6   the earlier summons to meet the narrowly tailored requirement, even though it could have done so,

                                   7   the Court finds its professions of the harm it has suffered from the Coinbase court’s ruling to be

                                   8   unconvincing.

                                   9           In sum, the Court finds the reasoning of Coinbase to be persuasive but must make its own

                                  10   determination as to whether the Doe summons in this case is narrowly tailored based on the record

                                  11   before it.

                                  12        D.      Powell Factors

 United States District Court
                                  13           As in Coinbase, there is no dispute in this case that the third and fourth Powell factors are

                                  14   satisfied. The Court therefore addresses whether the summons (1) serves a legitimate purpose and

                                  15   (3) seeks relevant information.

Northern District of California
                                  16                 1. Legitimate Purpose

                                  17           The Government has a legitimate purpose for seeking the materials described in the

                                  18   summon. As discussed above, the summons was issued in connection with an investigation by the

                                  19   IRS to determine the identity and correct federal income tax liability of U.S. persons who

                                  20   conducted transactions in cryptocurrency during the period 2016-2020. Kraken II, Cincotta

                                  21   Petition Decl. ¶ 2.   Further, an IRS investigator involved in the investigation, Agent Cincotta,

                                  22   attests that “[t]he information sought in the summons may be relevant to the IRS’s investigation

                                  23   into the identities and federal tax liabilities of cryptocurrency users who have failed or may be

                                  24   failing to comply with their federal tax obligations.” Id. ¶¶ 87-88.

                                  25           This conclusion finds support in the fact that the number of taxpayers filing tax returns

                                  26   with a property description related to bitcoin between 2016 and 2020 (4,164 taxpayers in 2016,

                                  27   88,040 for 2017, 93,848 in 2018, 102,278 in 2019, and 253,265 in 2020), while above pre-

                                  28   Coinbase levels, is still dwarfed by the amount of trading activity that occurs on Kraken. Id. ¶ 37.
                                                                                         19
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 20 of 51

                                   1   According to Agent Cincotta, Kraken has over 4 million clients, has conducted over $140 billion

                                   2   in trading activity since 2011 and was registering up to 50,000 new users a day as of the end of

                                   3   2017. Id. ¶ 58. Agent Cincotta has also pointed to evidence that under-reporting of income is

                                   4   substantially higher where there is no third-party information reporting, as is the case with Kraken.

                                   5   Id. ¶ 33. Finally, Agent Cincotta has pointed to five concrete examples of Kraken users who have

                                   6   committed various types of tax code violations involving cryptocurrency. Kraken I, First Cincotta

                                   7   Decl. ¶¶ 70-74.

                                   8          The Court therefore finds that the Government has demonstrated that its summons to

                                   9   Kraken is for a legitimate purpose under Section 7602(a).

                                  10                2. Relevance
                                  11                     a. Legal Standard
                                  12          The Supreme Court has made clear that under Section 7602, “an IRS summons is not to be

 United States District Court
                                  13   judged by the relevance standards used in deciding whether to admit evidence in federal court.”

                                  14   United States v. Arthur Young & Co., 465 U.S. 805, 814 (1984) (citing Fed.R.Evid. 401). This is

                                  15   apparent from the language of Section 7602, authorizing the IRS to issue a summons “[t]o

Northern District of California
                                  16   examine any books, papers, records, or other data which may be relevant or material to such

                                  17   inquiry.” 26 U.S.C. § 7602(a)(1) (emphasis added). Thus, the IRS is authorized under this section

                                  18   “to obtain items of even potential relevance to an ongoing investigation, without reference to its

                                  19   admissibility.” United States v. Arthur Young & Co., 465 U.S. at 814 (emphasis in original).

                                  20          Likewise, “[t]he required standard that the IRS must meet is clearly less than probable

                                  21   cause.” United States v. Goldman, 637 F.2d 664, 667 (9th Cir. 1980). Instead, the relevance

                                  22   standard is defined as “whether the inspection sought might [throw] light on the correctness of the

                                  23   taxpayer’s return.” Id. (citing Foster v. United States, 265 F.2d 183 (2d Cir. 1959), cert. denied,

                                  24   360 U.S. 912 (1960); United States v. Ryan, 455 F.2d 728, 733 (9th Cir. 1972)). In explaining this

                                  25   standard, the court in Goldman cited with approval the following passage:

                                  26                  The question, and it is not always one that lends itself easily to
                                                      solution, is whether from what the Government already knows there
                                  27                  exists the requisite nexus between taxpayer and records of another’s
                                                      affairs to make the investigation reasonable -- in short, whether the
                                  28                  “might” in the articulated standard “might throw light upon the

                                                                                        20
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 21 of 51

                                                      correctness of the return,” is in the particular circumstances an
                                   1                  indication of a realistic expectation rather than an idle hope that
                                                      something may be discovered.
                                   2
                                       Id. (quoting United States v. Harrington, 388 F.2d 520, 524 (2d Cir. 1969)). The court continued,
                                   3
                                       “The Government’s burden, while not great, is also not non-existent.” Id. Further, “the summons
                                   4
                                       should be ‘no broader than necessary to achieve its purpose.’” Coinbase, 2017 WL 5890052, at *6
                                   5
                                       (quoting United States v. Bisceglia, 420 U.S. 141, 151 (1975)).
                                   6

                                   7                    b. Is definition of “User” too broad

                                   8                        i. Background
                                              Kraken’s Contentions
                                   9
                                              Kraken objects to the definition of “User” in the summons on the basis that it is overbroad,
                                  10
                                       making the following arguments. First, it points out that the definition here sets a lower threshold
                                  11
                                       than was approved in Coinbase by covering account holders with an aggregate of at least $20,000
                                  12

 United States District Court
                                       in cryptocurrency transactions “regardless of type” for any one year between 2016 and 2020.
                                  13
                                       Kraken II, dkt. no. 19-3 (Respondent Payward Ventures, Inc.’s Opposition to Petition to Enforce
                                  14
                                       Internal Revenue Service Summons (“Kraken II, Opposition”)) at 8. In contrast, in Coinbase, the
                                  15

Northern District of California
                                       summons applied only to accounts with at least the equivalent of $20,000 in any one transaction
                                  16
                                       type (buy, sell, send, or receive) in any one year. 2017 WL 5890052, at *2. According to Kraken,
                                  17
                                       this broader definition would cover 59,331 unique Kraken accounts. Siemers Decl. ¶ 10. By way
                                  18
                                       of comparison, Kraken estimates that if the narrower Coinbase threshold were used, the summons
                                  19
                                       would cover 42,017 Kraken accounts. Kraken II, Opposition at 8 (citing Siemers Decl. ¶ 12).
                                  20
                                       Kraken contends the definition of “user” in Coinbase already pushed the limit and that this
                                  21
                                       broader definition “far exceeds the breaking point[,]” threatening to sweep in many users who
                                  22
                                       transact only in small amounts and have no taxable gain. Id.
                                  23
                                              Kraken also points out that in Coinbase, the Government narrowed the scope of the
                                  24
                                       summons to exclude users who only bought and held bitcoin during the period covered by the
                                  25
                                       summons, arguing that the summons here should be similarly limited. Id. at 8-9. According to
                                  26
                                       Kraken, where users only make deposits or purchases (“buy-hold crypto”) or withdrawals during
                                  27
                                       the period covered by the summons, there is no taxable event and “Coinbase makes clear that the
                                  28
                                                                                        21
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 22 of 51

                                   1   documents the IRS may obtain are only ones that might help discern a potentially unreported

                                   2   taxable gain[.]” Id. at 9. It is not enough, Kraken contends, that the information the Government

                                   3   seeks might help to establish the purchase price of a user’s cryptocurrency, which might then be

                                   4   used to calculate a taxable gain. Id. (citing Kraken II, Cincotta Petition Decl. ¶ 138).

                                   5           Similarly, Kraken asserts, “[a] deposit alone shows nothing and would encompass all the

                                   6   people who buy and simply hold cryptocurrency.” Id. According to Kraken, “[t]he IRS vaguely

                                   7   asserts that deposits and withdrawals are a ‘clear indicator that the user is holding cryptocurrency

                                   8   in other places,’ and thus ‘needs’ this information ‘so it can gather as much information as

                                   9   possible’ to determine a user’s tax compliance[,] . . . . [b]ut that is no different than the type of

                                  10   fishing expeditions that are not allowed under § 7609(f).” Id. (quoting Kraken II, Cincotta

                                  11   Petition Decl. ¶ 142) (and citing In re Tax Liabilities of John Does, 688 F.2d 144, 149 (2d Cir.

                                  12   1982) for the principal that “Sections 7609(f) and (h) provide a prior restraint on the IRS’s power

 United States District Court
                                  13   to serve John Doe summonses, mainly ‘to preclude the IRS from using such summonses to engage

                                  14   in possible “fishing expeditions.”’”). Moreover, Kraken contends, Agent Cincotta’s statements

                                  15   that deposits or withdrawals “may be taxable transactions themselves” are insufficient. Id. (citing

Northern District of California
                                  16   Kraken II, Cincotta Petition Decl. ¶ 143). According to Kraken, Agent Cincotta “speculates that a

                                  17   deposit could reflect compensation or a similar taxable income payment, such as for goods and

                                  18   services, and that a withdrawal could represent a ‘taxable disposition’ if sent to a third party . . .

                                  19   [b]ut this is yet another example of a ‘conclusory’ assertion that cannot justify enforcement of this

                                  20   more expansive Summons[.]” Id.

                                  21           Next, Kraken argues that the broad definition of “user” “leads to the potential collection of

                                  22   data for users with no nexus to the U.S. – whom the IRS has no interest in auditing – and creates a

                                  23   significant concern about Kraken’s ability to comply with foreign privacy laws.” Id. at 9-10.

                                  24   Kraken asserts that “it is possible that certain non-U.S. citizens who at some point during the five

                                  25   year timeframe either lived in the U.S., had a U.S. phone number, or simply used a computer in

                                  26   the U.S. would get swept up in the search[,]” and that therefore, the summons is not narrowly

                                  27   tailored. Id. at 10. In addition, as to EU users, Kraken contends its compliance with the summons

                                  28   is likely prohibited under the EU General Data Protection Regulation (“GDPR”), which “generally
                                                                                          22
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 23 of 51

                                   1   prohibits the disclosure of personal data to non-EU countries unless formally recognized by the

                                   2   European Commission as having adequate levels of data protection, which the U.S. currently is

                                   3   not.” Id. (citing Regulation (EU) 2016/679, Article 3 at 45-49).

                                   4          Finally, Kraken argues that the summons is overly burdensome, given that it covers the

                                   5   accounts of 59,331 users, and improperly invades the privacy of Kraken users. Kraken asserts that

                                   6   “[t]ransferring troves of sensitive personal and financial data (the vast majority of which will be

                                   7   irrelevant) to the IRS increases the risk of loss or theft” and points to a Treasury Inspector General

                                   8   Report finding that “the IRS did not meet all of the security requirements for its cloud-based

                                   9   systems and failed to timely implement mitigation and corrective actions to mitigate security

                                  10   risks.” Id. at 11 (citing The Enterprise Case Management System Did Not Consistently Meet

                                  11   Cloud Security Requirements TREASURY INSPECTOR GEN. FOR TAX ADMIN.

                                  12   (Mar. 27, 2023), https://www.oversight.gov/sites/default/files/oig-reports/TIGTA/202320018fr.pdf

 United States District Court
                                  13   (attached as Ex. B to Kraken II, dkt. no. 16-1 (Declaration of Grant P. Fondo in Support of

                                  14   Payward Ventures, Inc.’s Opposition to Petition to Enforce Internal Revenue Service Summons)

                                  15   (“Kraken II, Fondo Decl.”)).

Northern District of California
                                  16          The Government’s Response

                                  17          The Government rejects Kraken’s argument that the definition of “user” is overbroad.

                                  18   First, the Government challenges Kraken’s assertion that the Doe definition in this case must be

                                  19   narrowed to match the one in Coinbase. Kraken II, Reply at 5. As to the threshold transaction

                                  20   amount required to be a “user” under the summons, the Government explains that in Coinbase it

                                  21   narrowed its John Doe class definition to users with $20,000 in transactions in any one category

                                  22   (buy, send, sell, receive) in any one year during the 2013-2015 period after learning from

                                  23   Coinbase that most of its users engaged in low volume, low dollar transactions. Id. (citing

                                  24   Coinbase, dkt. no. 65-3 (Declaration of David Utzke) ¶¶ 13-14). According to the Government, it

                                  25   broadened the definition in its summons to Kraken after “consider[ing] the needs of its

                                  26   investigation, what it learned from the summons response in Coinbase, the change in the

                                  27   cryptocurrency market over time, and how Kraken differs from Coinbase even though both are

                                  28   cryptocurrency exchanges.” Id. (citing Kraken II, Cincotta Reply Decl. ¶¶ 72-94). The
                                                                                        23
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 24 of 51

                                   1   Government argues that “[a]side from these practical reasons [for defining ‘user’ more broadly in

                                   2   the summons to Kraken] . . . , there is no legal reason why the IRS should be made to use the same

                                   3   John Doe class definition for every cryptocurrency John Doe summons it issues.” Id. at 5-6. In

                                   4   addition, the Government rejects Kraken’s argument that the lower threshold would sweep in

                                   5   account holders who engage only in low amount transactions involving no taxable gains, noting

                                   6   that “there is no de minimis exception in the law when reporting gains or losses from

                                   7   cryptocurrency transactions.” Id. at 6 n. 9.

                                   8          The Government also rejects Kraken’s argument that the definition of “user” in the Doe

                                   9   summons is overbroad because it encompasses users whose accounts reflect no “taxable event.”

                                  10   The Government argues that “the payment of wages in cryptocurrency, a hard-fork, and a

                                  11   chainsplit” are all taxable events and “would appear like a ‘buy and hold’ in a user’s account[.]”

                                  12   Reply at 6 (citing Kraken II, Cincotta Petition Decl. ¶¶ 88-91). It further asserts that as to gains

 United States District Court
                                  13   and losses, “to determine basis, the IRS needs ‘buy’ information even if cryptocurrency isn’t sold

                                  14   within the same year.” Id. (citing Kraken II, Cincotta Reply Decl. ¶¶ 92-94; Kraken II, Cincotta

                                  15   Petition Decl. ¶ 23).

Northern District of California
                                  16          In her Reply declaration, Agent Cincotta explains why the IRS agreed to carve out buy-

                                  17   hold information in Coinbase but is seeking that information here:

                                  18                  88. In Coinbase, the IRS agreed to a carve out from the user class for
                                                      users that had “bought and held.” What this reflected was the IRS’s
                                  19                  understanding at the time that users that bought cryptocurrency during
                                                      the period and held it wouldn’t experience a taxable event.
                                  20
                                                      89. The IRS has learned, however, that because of the way certain
                                  21                  cryptocurrency events are reflected in a user’s transaction history, its
                                                      carve out for those that “bought and held” was flawed.
                                  22
                                                      90. Receipt of cryptocurrency, without a corresponding sale, can be
                                  23                  taxable. For example, a taxpayer’s receipt of new cryptocurrency in
                                                      connection with a “hard fork” is taxable. See generally Rev. Rul.
                                  24                  2019-24. A hard fork occurs when the distributed ledger technology
                                                      used by a cryptocurrency undergoes a protocol change that results in
                                  25                  a permanent diversion from the existing distributed ledger. A hard
                                                      fork may create a new cryptocurrency, which is then recorded on a
                                  26                  new distributed ledger, while transactions involving the legacy
                                                      cryptocurrency remain recorded on the legacy distributed ledger. This
                                  27                  type of hard fork is known as a “chain-split.” Sometimes, a hard fork
                                                      coincides with a distribution of the new cryptocurrency, known as an
                                  28                  “air drop,” to holders of the legacy cryptocurrency. Receipt of the new
                                                                                         24
                                       Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 25 of 51

                                                 cryptocurrency via an air drop following a hard fork results in taxable
                                   1             income to the recipient.
                                   2             91. Cryptocurrency can be used in lending transactions that generate
                                                 taxable interest income. Users can deposit their cryptocurrency into a
                                   3             pool of assets, known as a lending pool. Borrowers take loans from
                                                 the pool by posting cryptocurrency collateral, drawing
                                   4             cryptocurrency from the lending pool, and paying taxable interest to
                                                 the lenders. A carve out for users that “bought and held” would fail to
                                   5             capture these users.
                                   6             92. Also, a taxpayer’s gain or loss upon the disposition of virtual
                                                 currency will generally be the difference between adjusted basis in
                                   7             the virtual currency and the amount received in exchange for the
                                                 virtual currency, which should be reported on the tax return. See 26
                                   8             U.S.C. § 1001; IRS Frequently Asked Questions on Virtual Currency
                                                 Transactions, supra, Q7. Basis, for virtual currency purposes, is
                                   9             generally determined by the cost or amount spent to acquire
                                                 cryptocurrency, adjusted for fees, commissions, and other
                                  10             acquisitions costs. See 26 U.S.C. § 1012; IRS Frequently Asked
                                                 Questions on Virtual Currency Transactions, supra, Q8. When
                                  11             reporting gains and losses from the sale of virtual currency, a taxpayer
                                                 may use different methods for calculating that gain or loss. A taxpayer
                                  12             may use the specific identification method (which pairs the sale of a

 United States District Court
                                                 specific unit of virtual currency against a specific acquisition) or the
                                  13             so-called “first-in-first-out” (FIFO) accounting method (which
                                                 simply pairs the sale of a unit of virtual currency against the oldest-
                                  14             acquired unit chronologically). IRS Frequently Asked Questions on
                                                 Virtual Currency Transactions, supra, Q39 – Q41. Although these
                                  15             approaches provide taxpayers with flexibility in how they calculate

Northern District of California
                                                 gains or losses on the sale of virtual currency units, they do not allow
                                  16             the IRS to make a “taxable gain” determination by simply reviewing
                                                 an account holder’s transaction information in isolation. Instead, the
                                  17             IRS must first positively identify an account holder and then
                                                 determine whether that individual filed a tax return for the relevant
                                  18             tax year, whether that return reported virtual currency transactions,
                                                 and, if so, whether what was reported, or the approach taken in
                                  19             reporting the information, complies with the internal revenue laws.
                                  20             93. To determine whether a taxpayer’s reporting of virtual currency
                                                 complies with internal revenue laws, the IRS must know the correct
                                  21             adjusted basis for the units of virtual currency. This requires historical
                                                 account information. If a taxpayer uses the FIFO accounting method,
                                  22             to determine which units of virtual currency were sold in a given year,
                                                 the IRS must review a record of when prior units by a taxpayer were
                                  23             sold and match that information against records of when all units
                                                 owned by the taxpayer were acquired. Likewise, if a taxpayer uses the
                                  24             specific identification method, the IRS must review historical records
                                                 to determine whether the taxpayer has identified a specific virtual
                                  25             currency unit as sold to avoid the double counting of basis.
                                  26             94. What this means is that if a taxpayer bought $20,000 of
                                                 cryptocurrency in 2016 and held it until 2017 (when the
                                  27             cryptocurrency market experienced a downturn), at which point it was
                                                 sold or exchanged, the IRS needs the transaction information from
                                  28             2016 in addition to the transaction information for 2017 to determine
                                                                                    25
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 26 of 51

                                                      whether the taxpayer has properly determined any potential gain or
                                   1                  more likely loss. If the taxpayer sold that cryptocurrency in 2017 for
                                                      less than $20,000, he would have experienced a loss. Under the
                                   2                  Coinbase class definition the IRS would not receive this user’s
                                                      information because in 2016 he bought and held and in 2017 he
                                   3                  transacted below the dollar threshold. Yet, a complete understanding
                                                      of this taxpayer’s transaction reveals that he experienced a taxable
                                   4                  event, and his information should be captured in the summons
                                                      response.
                                   5

                                   6   Kraken II, Cincotta Reply Decl. ¶¶ 87-94.

                                   7          In addition, the Government rejects Kraken’s assertion that the IRS’s stated “need” to

                                   8   “gather as much information as possible about taxpayer compliance” amounts to a “fishing

                                   9   expedition” under § 7609 and In re Tax Liabilities of John Does, 688 F.2d 144, 149 (2d Cir.

                                  10   1982). Kraken II, Reply at 6. According to the Government, In re Tax Liabilities of John Does

                                  11   merely held that a summoned party cannot challenge the factual determinations that a district court

                                  12   must make under section 7609(f) before the court issues its ex parte authorization of a John Doe

 United States District Court
                                  13   summons – a conclusion the Ninth Circuit has also reached. Id. (citing 688 F.2d at 145-46; United

                                  14   States v. Samuels, Kramer and Co., 712 F.2d 1342, 1346 (9th Cir. 1983)). Further, the

                                  15   Government contends, the “fishing expedition” language in In re Tax Liabilities of John Does

Northern District of California
                                  16   highlighted by Kraken referred to the court’s ex parte determination. Id. According to the

                                  17   Government, “[n]ot only can that determination not be challenged here, but in granting leave to

                                  18   serve the summons to Kraken in the first place, this Court has already prevented a fishing

                                  19   expedition.” Id. at 6-7.

                                  20          Finally, the Government rejects Kraken’s assertion that the summons is overbroad because

                                  21   it may infringe the privacy of non-U.S. account holders. Id. at 7. It again argues that “whether

                                  22   the request is narrowly tailored cannot be challenged on enforcement.” Id. Further, it asserts, “the

                                  23   IRS defined the user class and requested the information it did precisely so it could best determine

                                  24   whether users are U.S. persons for tax purposes.” Id. According to the Government, Kraken has

                                  25   no way to determine which users are U.S. persons because it does not ask, so the Government has

                                  26   identified information that will allow it to make that determination. Id. In particular, it asserts,

                                  27                  while it may be true that a U.S. based address may not be perfectly
                                                      indicative of a U.S. person for tax purposes, it is one indication and a
                                  28                  starting point. The same can be said for telephone numbers and

                                                                                         26
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 27 of 51

                                                      banking information. Although not exclusive, some email internet
                                   1                  domains may refer to a foreign country. In those cases, it could alert
                                                      the IRS that they may need to investigate further whether that user is
                                   2                  a U.S. person for tax purposes. The same can be said for IP address.
                                   3   Id.

                                   4          In a footnote, the Government also rejects Kraken’s assertion that the summons violates

                                   5   the privacy rights of Kraken users generally, pointing to the privacy notice it contends is posted on

                                   6   Kraken’s website, stating: “We may need to use your personal information to comply with

                                   7   any applicable laws and regulations, subpoenas, court orders or other judicial processes, or

                                   8   requirements of any applicable regulatory authority. We do this not only to comply with our legal

                                   9   obligations but because it may also be in our legitimate interest to do so.” Id. n. 10. The

                                  10   Government does not respond to Kraken’s assertion that disclosure of information about foreign

                                  11   persons may violate some countries’ privacy laws or the EU General Data Protection Regulation.

                                  12                        ii. Discussion

 United States District Court
                                  13          Whether “Narrowly Tailored” Requirement Can be Challenged on Enforcement

                                  14          The Government asserts that by granting leave to serve the summons on Kraken in the first

                                  15   place, the Court already made the determination that the Powell factors were met and that that

Northern District of California
                                  16   determination cannot be challenged in this enforcement action. Kraken II, Reply at 6-7. The

                                  17   Government is incorrect. The Ninth Circuit rejected a similar argument in United States v.

                                  18   Goldman, 637 F.2d 664, 668 (9th Cir. 1980). There, the government argued it had met its burden

                                  19   as to the relevance of the information it sought based on an affidavit from an IRS agent and

                                  20   therefore, that the burden had shifted to the summoned party to disprove relevance. 637 F.2d at

                                  21   668. The court disagreed, explaining:

                                  22                  The Government appears to argue that, in issuing a show cause order,
                                                      the district court implicitly found that the Government had met its
                                  23                  Powell burden, thereby shifting to Goldman the burden of showing
                                                      defects in the summons. This is a misperception of the function of the
                                  24                  show cause order. In this context, the district court properly accepted
                                                      Agent Rouleau’s allegations of relevance as a prima facie showing
                                  25                  adequate to call for the hearing demanded in the show cause order.
                                                      Goldman’s challenge marked the first point at which the Government
                                  26                  was put to its true burden of establishing relevance. . . . Until there is
                                                      such a challenge, the district court has no reason to place such a
                                  27                  burden on the Government. It follows that the mere issuance of an
                                                      order to show cause does not constitute a finding that Powell criteria
                                  28                  have been satisfied.

                                                                                         27
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 28 of 51

                                   1   637 F.2d at 668.

                                   2          Here, the Government appears to go even further, arguing that once the show cause order

                                   3   has been issued, whether the request is narrowly tailored cannot be challenged. See Kraken II,

                                   4   Reply at 7. As the Government itself highlights, under Ninth Circuit case law a summoned party

                                   5   cannot challenge the factual determinations that a district court must make under section 7609(f)

                                   6   before the court issues its ex parte authorization of a John Doe summons. United States v.

                                   7   Samuels, Kramer and Co., 712 F.2d 1342, 1346 (9th Cir. 1983)). Thus, were the Court to adopt

                                   8   the approach espoused by the Government, a summoned party would never have the opportunity

                                   9   to challenge the relevance of the information covered by a summons. Nothing in the case

                                  10   authority or legislative history suggests, however, that Congress intended to deprive a party that is

                                  11   the subject of a Doe summons of this opportunity.

                                  12          Furthermore, in this case, the Court made it particularly clear when it approved the

 United States District Court
                                  13   summons in Kraken I that it did so “without prejudice to any argument that Kraken or its users

                                  14   might raise in a motion to quash” and that “[a]ny further disputes as to the scope of the summons

                                  15   would benefit from adversarial briefing.” Kraken I, dkt. no. 9. Therefore, the Court rejects the

Northern District of California
                                  16   Government’s argument that the question of whether its summons is narrowly tailored has already

                                  17   been decided and cannot be challenged in this proceeding.

                                  18          Implications of Coinbase

                                  19          As discussed above, Kraken argues that Coinbase illustrates the overbreadth of the

                                  20   definition of “user” both as to the threshold amount of transactions required to fall within the

                                  21   definition and the failure to carve out accounts where the holders only made deposits or purchases

                                  22   and did not sell cryptocurrency. The Court concludes that the Government has made a sufficient

                                  23   showing to justify the broader definition in the Kraken summons.

                                  24          As to the threshold amount of transactions, the Government has offered evidence that its

                                  25   decision to voluntarily limit the definition of user in Coinbase was based on specific facts that it

                                  26   learned in its negotiations with Coinbase; there is nothing in the court’s decision that required that

                                  27   the same threshold be applied as to other summonses involving cryptocurrency. Moreover, as the

                                  28   Government points out, the tax code does not contain a de minimis exception for reporting taxable
                                                                                         28
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 29 of 51

                                   1   gains and losses and thus, Kraken’s concern that account holders who transact in low amounts will

                                   2   be improperly swept into the definition of “user” is misplaced. Further, as to the Government’s

                                   3   inclusion of buy-hold only accounts in the definition of “user” in the Kraken summons, the Court

                                   4   finds the detailed explanation of the types of taxable events that may involve even the buy-hold

                                   5   accounts is sufficient to justify including them in the definition of “user” in the Kraken summons.

                                   6          Foreign Privacy Rights

                                   7          Although Kraken asserts that some non-U.S. users’ information may be disclosed under

                                   8   the proposed summons, it does not point to any authority suggesting the summons should be

                                   9   limited on this basis; nor does it explain, as a practical matter, how any summons issued to it could

                                  10   avoid this result as it apparently does not collect this information. Moreover, Kraken does not

                                  11   appear to dispute that the privacy notice on its website informs users that it “may need to use [the

                                  12   user’s] personal information to comply with any applicable laws and regulations, subpoenas, court

 United States District Court
                                  13   orders or other judicial processes, or requirements of any applicable regulatory authority.” Kraken

                                  14   II, Reply at 7 n. 10 (quoting Privacy Notice (kraken.com) [https://perma.cc/WL8E-H8WU]). The

                                  15   Court also finds that Kraken’s vague suggestion that disclosure might violate the EU’s GDPR is

Northern District of California
                                  16   not sufficient to establish that the summons needs to be narrowed on this basis as it did not offer

                                  17   any meaningful briefing in support of this argument.

                                  18          Finally, while Kraken has questioned the Government’s ability to protect the private

                                  19   information it obtains from Kraken based on a report about problems with the Enterprise Case

                                  20   Management System, Agent Cincotta states in her Reply Declaration that the IRS does not use that

                                  21   system for storage of John Doe summons information. Kraken II, Cincotta Reply Decl. ¶ 71.

                                  22   Therefore, the Court concludes that the concerns Kraken raises about the privacy interests of non-

                                  23   U.S. users do not warrant limiting or quashing the proposed summons.

                                  24          Burden

                                  25          Kraken challenges the definition of “user” in the summons on the basis that “full

                                  26   compliance could take months or even years” given the large number of accounts at issue and the

                                  27   extensive information requested. Kraken II, Opposition at 10 (citing Siemers Decl. ¶ 10). Because

                                  28   the burden of disclosure varies depending on the specific type of information sought by the
                                                                                        29
                                           Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 30 of 51

                                   1   Government, the Court addresses this issue in its discussions of the specific requests in the

                                   2   summons.

                                   3                    c. Requests One through Three (User Identity Information)
                                   4                        i. Background
                                   5           Kraken’s Contentions

                                   6           Kraken argues that the information sought in the Government’s first three requests is

                                   7   overbroad, going far beyond the “basic user information” that the court in Coinbase ordered

                                   8   produced. Kraken II, Opposition at 11-16. It also contends that because of the way much of the

                                   9   requested identity information is stored in its internal systems, responding to these requests will be

                                  10   extremely burdensome. Id.

                                  11            As to Request One, Kraken notes that the summons in Coinbase was similarly broad,

                                  12   asking for “[a]ccount/wallet/vault registration records for each account/ wallet/vault owned or

 United States District Court
                                  13   controlled by the user . . . limited to name, address, tax identification number, date of birth,

                                  14   account opening records, copies of passport or driver’s license, all wallet addresses, and all public

                                  15   keys for all accounts/wallets/vaults.” Id. at 11-12 (quoting Coinbase, 2017 WL 5890052, at *2).

Northern District of California
                                  16   According to Kraken, the court in Coinbase rejected the IRS’s “argument that it ‘need[ed] these

                                  17   records to verify an account holder’s identity’ and to determine if the holder had others make

                                  18   transactions on their behalf[,]” instead finding that the Government could only obtain personal

                                  19   information “necessary to determine if a taxable gain was reported: ‘name, date of birth, taxpayer

                                  20   identification and address.’” Id. at 12 (quoting Coinbase, 2017 WL 5890052, at *2).

                                  21           Similarly, Kraken contends, the user pseudonyms or IDs, historical personal information

                                  22   changes, IP addresses, and user payment methods sought by the Government here constitute

                                  23   “extraneous identity information” that the Government does not have a legitimate need for at this

                                  24   stage of its investigation. Id. 8 Kraken argues that “[p]roduction of such information at this point

                                  25   would serve only to provide unfettered access to the private financial and personal information of

                                  26
                                       8
                                  27     Kraken stipulated at the hearing, however, that it does not object to providing the information
                                       sought in Request 1(a) of the proposed summons, that is, name (including full name, any
                                  28   pseudonym, or any user ID); date of birth; taxpayer identification number; physical address;
                                       telephone number; and email address.
                                                                                        30
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 31 of 51

                                   1   thousands of otherwise law-abiding users that the IRS has no interest in auditing.” Id. Kraken

                                   2   contends the same approach should be taken here as was taken in Coinbase, and that the

                                   3   Government will only be able to establish that further identity information is necessary to its

                                   4   investigation when it has determined there was a potential taxable gain and it still has doubt as to a

                                   5   taxpayer’s identity. Id.

                                   6          Kraken also argues that the Government’s requests for “historical user information in

                                   7   Request No. 1(b)-(d) are unreasonable and unenforceable as they are overbroad and

                                   8   disproportionate to the end sought here.” Id. First, it contends these requests are overbroad

                                   9   because they are “indefinite as to time and unbounded by the purported time and value limitations

                                  10   set forth in the definition of ‘User.’” Id. (citing as examples, Request No. 1(b) (seeking the history

                                  11   of all changes to personal information “since the inception of the account”); Request No. 1(c),

                                  12   (seeking “[c]omplete User history” for IP addresses); and Request No. 1(d) (seeking User payment

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                                  13   methods “regardless of date.”)). According to Kraken, “[o]ther courts have held similar requests

                                  14   that were unlimited in time and not directly related to the tax years in dispute to be

                                  15   irrelevant and overbroad.” Id. at 13 (citing Zietzke v. U.S., No. 19-CV-03761-HSG(SK), 2020

Northern District of California
                                  16   WL 264394, at *9 (N.D. Cal. Jan. 17, 2020), report and recommendation adopted, 2020 WL

                                  17   6585882 (N.D. Cal. Nov. 10, 2020); United States v. Monumental Life Ins. Co., 440 F.3d 729, 736

                                  18   (6th Cir. 2006)).

                                  19          Kraken further contends the Government’s assertion that it needs information beyond basic

                                  20   identity information, which it labels as merely “nice to haves[,]” should be rejected to the extent

                                  21   the Government relies on a conclusory statement by Agent Cincotta that “[i]t is not uncommon for

                                  22   taxpayers to use aliases, false addresses or post office boxes, fictitious entity names, or other

                                  23   means to disguise their true identities.” Id. at 13 (quoting Kraken II, Cincotta Petition Decl. ¶ 42;

                                  24   and citing id., ¶¶ 92-95). According to Kraken, this statement is insufficient because the

                                  25   Government has offered no evidence that suggest “Kraken’s users have supplied false information

                                  26   or how expanding the request solves that problem.” Id. (emphasis in original). Kraken notes that

                                  27   “for Intermediate and Pro level accounts, users are required to provide verification information to

                                  28   confirm identity and address. So, the fear that those users are somehow falsifying information to
                                                                                         31
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 32 of 51

                                   1   disguise account ownership is baseless.” Id. Furthermore, Kraken contends, “[e]ven if some small

                                   2   subset of users provided fictious information, that does not justify the production of all this

                                   3   additional information, as to all 59,331 users.” Id. at 13-14.

                                   4          Likewise, Kraken rejects Agent Cincotta’s “speculat[ion] that an issue may arise with

                                   5   missing user data, solely based on the IRS’s experience with Coinbase.” Id. at 14 (citing Kraken

                                   6   II, Cincotta Petition Decl. ¶¶ 43-51). The assumption that the data obtained from Kraken will

                                   7   suffer from the same defects as the information produced in Coinbase is not reasonable, Kraken

                                   8   contends, given that Coinbase informed the IRS “that certain account information for its oldest

                                   9   accounts may be missing because it did not necessarily collect all of that information at that time.”

                                  10   Id. (citing Kraken II, Cincotta Petition Decl. ¶ 46). In contrast, Kraken asserts, it “required the

                                  11   same information for each user at its different account levels during the relevant timeframe: name,

                                  12   date of birth, address, email address, and phone number [and] [t]axpayer ID numbers were also

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                                  13   collected for all Intermediate and Pro level accounts.” Id. Even as to Kraken accounts where a

                                  14   taxpayer ID was not collected, Kraken asserts, the situation is not analogous to Coinbase; in

                                  15   particular, it points to Agent Cincotta’s statement that lack of taxpayer IDs presented a problem as

Northern District of California
                                  16   to Coinbase primarily when other information was also missing. Id. at 14 n. 9 (citing Kraken II,

                                  17   Cincotta Petition Decl. ¶ 47).

                                  18          In addition, Kraken argues, the Government does not “come close to providing a sufficient

                                  19   explanation as to how the other requested identity information (historical user profile changes, IP

                                  20   address, or user payment methods) would even assist the IRS in identifying taxpayers when

                                  21   certain information is missing.” Id. at 14-15. For example, if “the IRS had a user’s name,

                                  22   address, and birthdate, but was missing a taxpayer ID—being able to track an IP address to a

                                  23   general geographic area will not enhance its ability to identify a user[,]” Kraken contends. Id. at

                                  24   15. Similarly, Kraken asserts, where users have provided “false identifying information[,]” there

                                  25   is nothing to suggest that such users are likely to be identified through the IRS’s additional

                                  26   information requests.” Id.

                                  27          Kraken also rejects a number of other justifications offered by the Government for needing

                                  28   this information. First, to the extent the Government suggests that “IP address information is a
                                                                                         32
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 33 of 51

                                   1   good way to search data from other exchanges and link transactional records from foreign

                                   2   exchanges to determine compliance,[,]” that justification fails because “[t]his is far beyond the

                                   3   basic identity information the Court in Coinbase determined was needed for the sole purpose of

                                   4   identifying taxpayers” and moreover, “it is unreasonable to insinuate that the IRS plans to go

                                   5   through IP address histories for almost 60,000 users and cross compare those with IP addresses

                                   6   used in transaction records from other exchanges.” Id. at 15 (citing Kraken II, Cincotta Petition

                                   7   Decl. ¶¶ 108, 112, 118).

                                   8          Second, Kraken argues, “the only asserted basis for changes to user information is that

                                   9   Kraken’s data may not match IRS’s data for taxpayers . . . [b]ut this only speculates there may be

                                  10   some discrepancy and does not account for the existence of multiple user data points that could be

                                  11   used for identification.” Id. (citing Kraken II, Cincotta Petition Decl. ¶ 110).

                                  12          Kraken also challenges the Government’s assertion that account funding sources can shed

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                                  13   light on tax compliance by permitting identification of cross-linked bank accounts. Id. (citing

                                  14   Kraken II, Cincotta Petition Decl. ¶¶ 121-122). This assertion, Kraken contends, is based on the

                                  15   unsupported assumption that “a user with lots of linked accounts and no tax reporting is somehow

Northern District of California
                                  16   unlikely to be compliant.” Id. Moreover, Kraken argues, this information “is unnecessary to

                                  17   determine identity or a potentially taxable gain in the first instance” and also exceeds the scope of

                                  18   the IRS’s investigative purpose to the extent that it is aimed at discovering “alternative taxpayers

                                  19   associated with the accounts.” Id.

                                  20          Finally, Kraken argues that it would be overly burdensome for it to produce some of the

                                  21   requested user information in Request No. 1(b)-(d). Id. at 16-17. For example, because user

                                  22   records are not stored in manner that allows historical user information to be easily accessed,

                                  23   Kraken would have to manually pull account logs to determine whether any changes have been

                                  24   made, a process it estimates would take approximately 5,000 hours. Id. at 16 (citing Siemers Decl.

                                  25   ¶¶ 13-19). Similarly, it asserts, its storage of payment methods is not designed for a global query

                                  26   of historical payment information, meaning that compliance with that aspect of the summons

                                  27   would “require at least several weeks of work by a large[ ] team of data engineers, analysts, and

                                  28   core back-end engineers” to design a new search query. Id. (citing Siemers Decl. ¶¶ 20-22). The
                                                                                         33
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 34 of 51

                                   1   same is true of historical IP addresses, according to Kraken. Id. at 16-17 (citing Siemers Decl. ¶¶

                                   2   23-24).

                                   3             Kraken also objects to Request No. 2, seeking information from Know-Your Customer

                                   4   (“KYC”) questionnaires relating to “employment, net worth, and source of wealth for individual

                                   5   Users” and “for business Users, . . . legal name, business address, country, website, contact

                                   6   information, industry, goods and services, government‐issued business registration or tax

                                   7   identification number, and source of funds[.]” Id. at 17. Kraken points out that the court in

                                   8   Coinbase rejected the argument that such data was relevant at this stage, finding that KYC records

                                   9   were “broader than necessary” to determine identity and unreported taxable gains. Id. (citing

                                  10   Coinbase, 2017 WL 5890052, at *7.) Kraken emphasizes that “the IRS had little issue identifying

                                  11   90% of taxpayers in Coinbase without this information, and with less identifying data than Kraken

                                  12   maintains. If the IRS ‘later determines that it needs more detailed records on a taxpayer,’ it may

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                                  13   issue a second summons to the taxpayer or Kraken with notice – an approach Coinbase

                                  14   acknowledged was preferrable to a John Doe Summons in any event.” Id. at 17-18 (citing

                                  15   Coinbase, 2017 WL 5890052, at *7).

Northern District of California
                                  16             Furthermore, Kraken contends, the KYC information the Government seeks beyond basic

                                  17   user profile information “is not necessary to its purposes and is premature at this stage.” Id. at 18.

                                  18   According to Kraken, “[t]his highly personal information will not reveal potential tax liabilities for

                                  19   the IRS to go after.” Id. Pointing to the Government’s request for “employment, net worth and

                                  20   source of wealth” data for individual KYC questionnaires, Kraken argues that “[t]his has no

                                  21   bearing on potential tax liabilities from cryptocurrency transactions. Nor would net worth and

                                  22   source of wealth shed light on any particular tax year in dispute.” Id. Instead, it asserts, “the only

                                  23   potential use of this information would be to help confirm already known data or once there are

                                  24   doubts as to who exactly is responsible for a potential tax liability.” Id. To the extent that the

                                  25   Government “merely hopes to discover details about these users that may help its investigation[,]”

                                  26   Kraken contends, “[t]his is not the ‘narrowly tailored’ request 26 U.S.C. § 7609(f) requires.” Id.

                                  27   at 19 (emphasis in original).

                                  28             Kraken also argues that producing the information sought in Request No. 2 would be
                                                                                         34
                                           Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 35 of 51

                                   1   excessively burdensome, because “[u]nlike basic personal information and transactional ledgers,

                                   2   this KYC data must be pulled on an account-by-account basis for all Users for which that

                                   3   information exists” and “Kraken’s systems are not natively designed to handle such a global query

                                   4   into or retrieval of this account-supporting documentation.” Id. at 19 (citing Siemers Decl. ¶ 25).

                                   5            Kraken also opposes in its entirety Request No. 3, seeking “[a]ll exception reports

                                   6   produced by your anti-money laundering (‘AML’) system, and all records of investigation of such

                                   7   exceptions.” Id. at 19-21. Kraken notes that the Government requested the same information in

                                   8   Coinbase before narrowing its summons to exclude that information, “tacitly acknowledg[ing] that

                                   9   AML records were not needed for its investigative purpose.” Id. at 19 (citing Coinbase, 2017 WL

                                  10   5890052, at *1). The same is true here, Kraken asserts. Id. Kraken argues that the Government

                                  11   cannot seek such information until it determines that “a user has a potentially reportable taxable

                                  12   gain.” Id. at 20.

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                                  13            Kraken rejects the justifications offered by Agent Cincotta for needing the information

                                  14   covered by Request No. 3 as “nebulous[ ]” and “conclusory rhetoric.” Id. According to Kraken,

                                  15   Agent Cincotta claims “that exception reports would ‘allow[] the IRS to leverage the industry

Northern District of California
                                  16   expertise’ of Kraken as to what activities are ‘abnormal or suspicious’– which she asserts can be

                                  17   combined with (unspecified) ‘other information available to the IRS’ to determine taxpayer

                                  18   compliance.” Id. (citing Kraken II, Cincotta Petition Decl. ¶¶ 132-135). Kraken argues that the

                                  19   IRS “simply assume[s] . . . that users associated with AML records may not be paying their taxes”

                                  20   but that “there could be any number of reasons that a user’s account may get flagged under

                                  21   Kraken’s AML system[,]” including “if a user makes too many log-in attempts, due to receipt of

                                  22   legal process, when there is a change in account verification levels, or for confirmation of OFAC-

                                  23   related checks.” Id. (citing Siemers Decl. ¶ 27). 9

                                  24
                                       9
                                  25       With respect to the AML reports, Siemers states:

                                  26   27. I understand that the IRS is also requesting production of Kraken’s AML “exception reports”
                                       and “records of investigation of such exceptions.” Kraken does not have documents called AML
                                  27   “exception reports” and so cannot produce any such records. As previously stated, Kraken does
                                       maintain an AML log for each account. However, there are numerous reasons, including minor or
                                  28   technical issues, that entries are generated in these logs. For example, these logs track security-
                                       related actions, Suspicious Activity Report (“SAR”) filings, actions taken in response to receipt of
                                                                                          35
                                            Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 36 of 51

                                   1             Kraken also rejects as “speculative and premature” the Government’s reliance on Agent

                                   2   Cincotta’s statement that “AML investigative information typically ‘contains information

                                   3   provided by the user explaining the nature of the questionable activity.’” Id. at 21 (quoting

                                   4   Kraken II, Cincotta Petition Decl. ¶ 134). Kraken contends such information would only be

                                   5   relevant when the IRS “has already identified a user and potentially taxable gains.” Id.

                                   6             In addition, Kraken argues that this request, like Request No. 2, is “manifestly overbroad

                                   7   and far reaching because it is not confined to any relevant time period and is unbounded by any

                                   8   transaction type or amount[.]” Id. And like Request No. 2, Kraken contends, Request No. 3 would

                                   9   impose an excessive burden on it because “Kraken’s AML records are not maintained in a way to

                                  10   allow for global search or retrieval across identified ‘Users.’” Id. (citing Siemers Decl. ¶ 28). 10

                                  11   Kraken represents that in order to pull this information, it would have to “go into each of the

                                  12   59,331 accounts to manually analyze and collect this information[]” which would include

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                                  13   decrypting the data – a process that would require “several thousand hours of work.” Id. (citing

                                  14   Siemers Decl. ¶¶ 19, 33). 11

                                  15

Northern District of California
                                  16   legal process, changes in account verification levels, rejected or recalled deposits, and
                                       confirmation of OFAC-related checks.
                                  17
                                       Siemers Decl. ¶ 27.
                                       10
                                  18     Siemers states in his declaration:

                                  19   28. To the extent the IRS’s request seeks Kraken records associated with events that
                                       trigger its AML system, and any associated investigation into material issues, determining
                                  20   whether accounts have associated AML records and retrieving those documents would be very
                                       time consuming and burdensome. As stated above, AML records are not kept in a manner that
                                  21   allows for global inquiry or retrieval across any identified users. This would require a manual,
                                       account-by-account review of the AML logs for each of the 59,331 accounts covered by the
                                  22   Summons. This AML data is also encrypted and would require decryption on an account-by
                                       account basis similar to the process described in Paragraph 19. This process would cause
                                  23   significant interruption to Kraken’s business and direct valuable engineering time away from
                                       operational priorities.
                                  24
                                       Siemers Decl. ¶ 28.
                                  25   11
                                            Siemers states in his declaration:
                                  26
                                       19. Even if Kraken were required to analyze the AML logs only for the 59,331
                                  27   accounts that meet the IRS’s definition of User to determine (i) whether any changes were made
                                       to the account holder’s personal information, and (ii) if so, what those substantive changes were,
                                  28   it would be extremely time consuming. Based on my experience, it is reasonable to assume it
                                       would take approximately five minutes per log for a Kraken employee to decrypt the log, review
                                                                                        36
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 37 of 51

                                   1          The Government’s Response

                                   2          The Government rejects Kraken’s argument that Request No. 1 is overbroad, arguing that

                                   3   the identifying information sought in this request, such as whether a user has changed their name

                                   4   on an account or IP address information, can be used to identify a taxpayer, which “might throw

                                   5   light upon the correctness of a return.” Kraken II, Reply at 7-8 (citing Kraken II, Cincotta Petition

                                   6   Decl. ¶¶ 111-119). 12 Likewise, the Government asserts, “[t]he IRS uses information about how a

                                   7

                                   8   it for historical residency information, and collect that information. Thus, for 59,331 logs, it
                                       would require approximately 5,000 hours of work. In addition, historical changes to personal data
                                   9   have not been stored by Kraken in its AML logs for the entire period covered by the Summons, so
                                       the data collected would be incomplete. Since this is not data that Kraken formally maintains, I do
                                  10   not know how accurate the information retrieved would be or if we would successfully be able to
                                       collect historical personal information for all accounts.
                                  11   ...

                                  12   33. I understand that the IRS also requests any invoices, billing statements, receipts, or
                                       other similar documents relating to account funding transactions. It is unclear the full extent of

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                                  13   what documents the IRS is seeking based on these descriptions. Based on my knowledge and
                                       experience at Kraken, Kraken does not send invoices, billing statements, or receipts to its users.
                                  14   Any documents that may be captured by this request are individual records and not globally
                                       searchable data. Collection of these documents, to extent they exist, would be a very time
                                  15   consuming and likely require a manual review of each of the 59,331 accounts covered by the IRS

Northern District of California
                                       summons. It is difficult to estimate the burden of this request since it is unclear the universe of
                                  16   documents being sought. But as previously stated, even if only a few minutes were required per
                                       account to conduct a manual review, this would lead to thousands of hours of work.
                                  17
                                       Siemers Decl. ¶¶ 19, 33.
                                       12
                                  18      Agent Cincotta explains how identifying information covered by Request No. 1 can be helpful
                                       in uncovering tax non-compliance as follows:
                                  19
                                       111. The summons request for complete user history is directed at identifying internet protocol
                                  20   (“IP”) addresses used to access the account. This information is helpful when initially confirming
                                       a user’s identity and making an initial determination regarding whether the identified user is in tax
                                  21   compliance.

                                  22   112. In situations where the IRS has had difficulty adequately confirming a taxpayer’s
                                       identity, it has been able to employ IP address information as an additional data point to confirm
                                  23   that the IRS has connected information to the proper taxpayer. IP address information indicates the
                                       geographical location where a device accesses the internet (generally through an internet service
                                  24   provider). The geographical location of an IP address is publicly available so the IRS can use IP
                                       address information to search publicly available records to determine a location.
                                  25
                                       113. For example, a taxpayer accessing his Kraken account from San Francisco, California
                                  26   will have an IP address indicating that the access was made from San Francisco, California.

                                  27   114. Based on my review of Kraken’s account verification requirements, it is my understanding
                                       that IP address information is actively being collected and monitored by cryptocurrency exchanges
                                  28   such as Kraken.

                                                                                        37
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 38 of 51

                                   1   user funds their account, or what payment methods they use, to uncover related taxpayers or

                                   2   nominee situations, along with determining whether that user is in tax compliance.” Id. at 8. The

                                   3   Government offers the following example: “if bank accounts of one taxpayer are linked to another

                                   4   taxpayer’s cryptocurrency exchange account and vice versa, or a taxpayer with minimal reported

                                   5   income has many linked funding sources, or a taxpayer has funding sources that are not in his own

                                   6   name, that taxpayer is more likely to not be complying with the internal revenue laws.” Id. (citing

                                   7   Kraken II, Cincotta Petition Decl. ¶¶ 120-25). The Government argues that “[h]aving this

                                   8   information certainly might throw light upon the correctness of a return.” Id.

                                   9          The Government rejects Kraken’s assertion that Agent Cincotta’s statements about the use

                                  10

                                  11
                                       115. Cryptocurrency exchanges use IP address information internally to determine from where
                                  12   an individual is attempting to access their platform so they can block access from jurisdictions
                                       where they do not operate. It is my understanding that Kraken employs this same process to

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                                  13   monitor and block users from jurisdictions where it does not operate such as Washington State and
                                       New York.
                                  14
                                       116. Using this information, the IRS will be able to confirm a user’s identity in situations
                                  15   where the user’s identity is not certain based on the other personal information by confirming that

Northern District of California
                                       the account was accessed from IP address locations that coincide with the taxpayer’s known
                                  16   physical address.

                                  17   117. Conversely, where the IP address information does not match, the IRS will be able to
                                       conduct additional due diligence to determine the proper account owner or whether there was an
                                  18   incidence of identity theft.

                                  19   118. Aside from its utility in confirming an individual’s identity, the IRS will be able to use
                                       this information to make a determination regarding a user’s tax compliance. The IRS is in
                                  20   possession of data relating to foreign cryptocurrency exchanges. That data lacks a taxpayer ID
                                       number, but does include information such as telephone number, email address, and IP address.
                                  21   Being able to match the IP address information of a Kraken user to IP address information (and
                                       other data points contained in the IRS’s information) will permit the IRS to link substantive
                                  22   transactional information from multiple sources for a single individual taxpayer and make a more
                                       accurate initial determination regarding that individual’s tax compliance.
                                  23
                                       119. In my experience as a Revenue Agent, it is important for the IRS to receive this
                                  24   information at the same time it receives the other identity information because it helps identify
                                       users and can be searched against existing data in the IRS’s possession to determine whether a
                                  25   user is in tax compliance.

                                  26   Kraken II, Cincotta Petition Decl. ¶¶ 111-119.

                                  27

                                  28
                                                                                        38
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 39 of 51

                                   1   of aliases, false addresses or post office boxes, fictitious entity names, or other means to disguise

                                   2   account holders’ true identities are insufficient because she does not address whether these

                                   3   practices are common among Kraken users specifically. Id. 8-9. According to the Government,

                                   4   given that Agent Cincotta has worked as a revenue agent since 2005, “particularly working in the

                                   5   offshore and electronic payments systems area and on other John Doe summonses[,]” these

                                   6   statements are persuasive evidence. Id. (citing Kraken II, Cincotta Petition Decl. ¶ 42; Kraken II,

                                   7   Cincotta Reply Decl. ¶ 1). Furthermore, the Government argues, “although Kraken is correct that

                                   8   the IRS doesn’t know if Kraken’s users have supplied false information, Kraken doesn’t know

                                   9   either – at least not for the user accounts that are at its Starter or Express levels[,] [as] Kraken

                                  10   admits it only requires users at the Intermediate and Pro levels to provide identity verification

                                  11   information.” Id. at 9.

                                  12           The Government dismisses Kraken’s argument that the basic identity information that was

 United States District Court
                                  13   produced in Coinbase is sufficient because “the IRS was able to identify most of the Coinbase

                                  14   users from the basic identifying information it received.” Id. at 9. It asserts, “what a

                                  15   summoned party believes is necessary for an IRS examination is not the standard under Powell

Northern District of California
                                  16   and its progeny.” Id. (citing Tiffany Fine Arts, Inc. v. United States, 469 U.S. 310, 323 (1985)).

                                  17           In a footnote, the Government rejects Kraken’s assertion that Request No. 1 is overbroad

                                  18   because of the lack of a date restriction for the historical information it seeks. Kraken II, Reply at

                                  19   8 n. 11 It asserts, that these requests are proper because “the summons requests that are unlimited

                                  20   in time are tied to the years under investigation, even though the IRS cannot more specifically

                                  21   identify the year in which the users may have submitted identity confirming information to

                                  22   Kraken.” Id. It notes that in Zietzke, cited by Kraken in support of its argument on this issue, the

                                  23   court “found that the IRS could modify its summons request to tie the information requested in

                                  24   prior years to the year under exam.” Id.

                                  25           With respect to Request No. 2, the Government rejects Kraken’s argument that

                                  26   “employment, net worth, and source of wealth data for individual user accounts [ ] is irrelevant to

                                  27   potential tax liabilities[,]” asserting that Agent Cincotta “explains in detail just how the IRS would

                                  28   use that information and why it may be relevant to the IRS’s investigation.” Id. at 9 (citing
                                                                                          39
                                            Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 40 of 51

                                   1   Kraken II, Cincotta Petition Decl. ¶¶ 126-31). 13 As to Kraken’s objection that this request isn’t

                                   2   limited in time, the Government responds that this does not render the request overbroad because

                                   3   “the IRS can’t possibly know when in time Kraken collected this information from each user.” Id.

                                   4   at 10 n. 14.

                                   5             As to Request No. 3, the Government argues that its withdrawal of the same request to

                                   6   Coinbase has no bearing on whether it is permissible here. Id. at 10. Moreover, it asserts, Agent

                                   7   Cincotta’s declaration is sufficient to establish that Kraken’s AML-triggered investigation records

                                   8   may be relevant to the IRS’s investigation. Id. (citing Kraken II, Cincotta Petition Decl. ¶ 133). 14

                                   9
                                       13
                                  10        Agent Cincotta describes the Government’s need for this information as follows:

                                  11   127. With respect to the individual KYC questionnaire, the summons only requests the
                                       responses to the employment, net worth, and source of wealth questions.
                                  12
                                       128. Given that the KYC questionnaire is only required for pro level accounts, I expect that

 United States District Court
                                  13   these responses will only be provided for a limited number of account holders. However, pro level
                                       account holders are permitted the largest movement of funds as well as access to Kraken’s “dark
                                  14   pool”—a discrete market where the order books are secret, making it easier to buy or sell larger
                                       unit volumes without influencing the market.
                                  15

Northern District of California
                                       129. Given the likely larger movement of funds and higher dollar values, and the overall
                                  16   increase in fair market value of bitcoin during the summoned period, it is almost certain that these
                                       pro level account individuals will have experienced a taxable gain. Having additional information
                                  17   such as employment, net worth, and source of wealth will help the IRS determine whether they are
                                       in tax compliance.
                                  18
                                       130. Employment information can be matched against Forms W-2 issued by the identified
                                  19   employer to both confirm the user’s identity and identify the user’s income level. Net worth and
                                       source of wealth questions can help the IRS understand whether the identified taxpayer has a level
                                  20   of wealth commensurate with his earnings or possibly unreported income.

                                  21   131. With respect to the business KYC questionnaire, all the information obtained by the
                                       questionnaire is the same basic information requested for individual users. Each of the pieces of
                                  22   information identified in the questionnaire, if not already provided as part of the user profile
                                       information identified in summons request number 1, is necessary to properly identify the business
                                  23   taxpayer that controls the account as well as the actual individuals (contacts) that have access to
                                       the account.
                                  24
                                       Kraken II, Cincotta Petition Decl. ¶¶ 127-131.
                                  25   14
                                            Agent Cincotta states in her declaration:
                                  26
                                       133. Exception reports identify questionable transactions engaged in by a user that warranted
                                  27   additional research and investigation by the money services business. Based on my experience,
                                       reviewing these reports allows the IRS to leverage the industry expertise of the business involved
                                  28   (here, a cryptocurrency exchange) regarding what type of activity is abnormal or suspicious and
                                       allows the IRS to combine that expertise with other information available to the IRS to determine
                                                                                       40
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 41 of 51

                                   1          On the question of burden, the Government argues generally that “[t]he production of 160

                                   2   million transaction records is not out of line with what the IRS receives, or expects to receive,

                                   3   when it issues a John Doe summons” and that “[t]he same can be said for the production of

                                   4   59,351 user accounts.” Id. at 13 (citing Kraken II, Cincotta Reply Decl. ¶ 63). It responds further

                                   5   that “Kraken’s costs can be offset by reimbursement or other IRS assistance.” Id. (citing 26

                                   6   U.S.C. § 7610 15; 26 C.F.R. 301.7610-1 16). It also notes that “under the FinCEN regulations,

                                   7   Kraken is required to obtain and retain many of the summoned records.” Id. at 12 n. 16 (citing 31

                                   8   C.F.R. § 1010.4100(e)(1)(i) and § 1022.400; Kraken II, Cincotta Petition Decl. ¶¶ 62-67).

                                   9   According to the Government, “under the FinCEN regulations, Kraken must be able to retrieve the

                                  10   records it is required to keep (‘have the information readily available’). Id. (quoting FIN-2016-

                                  11   G001 (Mar. 11, 2016)).

                                  12                        ii. Discussion

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                                  13          As discussed above, the Court must determine whether the Government’s summons is

                                  14   narrowly tailored, that is, whether it is “no broader than necessary to achieve its purpose.” United

                                  15   States v. Bisceglia, 420 U.S. 141, 151 (1975). The Court finds that to the extent the first three

Northern District of California
                                  16   requests are aimed at establishing the identities of the Kraken account holders who fall within the

                                  17   Doe definition, the information sought in these requests is much broader than what is necessary to

                                  18   achieve that purpose for the vast majority of Doe users.

                                  19          First, the record reflects that for Intermediate and Pro level accounts, at least, Kraken will

                                  20   be able to provide significant identifying information, including taxpayer IDs for some users,

                                  21   rendering superfluous the requests for the additional (and more intrusive) information sought in

                                  22

                                  23   whether the subject taxpayer is complying with the internal revenue laws.

                                  24   Kraken II, Cincotta Petition Decl. ¶ 133.
                                       15
                                          Under 26 U.S.C. § 7610, “The Secretary shall by regulations establish the rates and conditions
                                  25   under which payment may be made of . . . reimbursement for such costs that are reasonably
                                       necessary which have been directly incurred in searching for, reproducing, or transporting books,
                                  26   papers, records, or other data required to be produced by summons[,]” except that no payment may
                                       be made “if . . . the person with respect to whose liability the summons is issued has a proprietary
                                  27   interest in the books, papers, records or other data required to be produced, or . . . the person
                                       summoned is the person with respect to whose liability the summons is issued.”
                                       16
                                  28      This regulation addresses the types of costs that may be reimbursed in connection with
                                       compliance with an IRS summons and applicable rates.
                                                                                         41
                                         Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 42 of 51

                                   1   these requests aimed at uncovering the identity of the account holders. While it is unclear how

                                   2   many Kraken accounts are at the Pro and Intermediate levels as compared to starter level accounts,

                                   3   the Government’s requests that go beyond the basic information sought under Request 1(a), that

                                   4   is, the requests for historical information about changes to users’ personal information, IP

                                   5   addresses and payment methods (Request Nos. 1(b)(-(d)), are clearly broader than necessary as to

                                   6   these users. Furthermore, to the extent it appears to be undisputed that Kraken verifies the

                                   7   identities of users at these account levels, Agent Cincotta’s statement that taxpayers sometimes

                                   8   use aliases and fictitious entity names, see Kraken II, Cincotta Petition Decl. ¶ 42, does not

                                   9   establish that this additional information is required to determine these users’ identities.

                                  10          Second, even taking into consideration the more limited (and perhaps less reliable)

                                  11   information collected by Kraken from users with starter level accounts, the historical information

                                  12   sought in Request Nos. 1(b)(-(d) is broader than necessary. Kraken has provided evidence that

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                                  13   during the relevant period it collected first and last name, date of birth, address, email address, and

                                  14   phone number for all users. Siemers Decl. ¶ 5. Although Agent Cincotta has stated that taxpayers

                                  15   sometimes provide false information as to their identity, this evidence at most suggests that the

Northern District of California
                                  16   basic identity information collected by Kraken might not be sufficient to establish the identities of

                                  17   some users. On the other hand, the Government does not appear to dispute that as to the vast

                                  18   majority of Does, this information will allow it to identify these account holders. Indeed, in

                                  19   Coinbase, where the information collected by Coinbase appears to have been less complete than

                                  20   the information collected by Kraken, approximately 90% of the Does were identified using

                                  21   taxpayer IDs and after further efforts to obtain missing basic information (e.g., no name or use of a

                                  22   pseudonym, missing birth date or physical address) the Government was able to reduce the

                                  23   number of accounts that could not be identified to 750 (approximately 5% of the Does covered by

                                  24   the summons). Kraken II, Cincotta Petition Decl. ¶¶ 43-48. As to the remaining accounts that the

                                  25   Government has not been able to identify, the Government could have issued another Doe

                                  26   summons or summonses with notice to the account holders, but it apparently chose not to do so.

                                  27   Therefore, as to Request No. 1, the Court concludes that the Government has not established that it

                                  28   needs information beyond that covered by Request 1(a) to identify the Does.
                                                                                         42
                                            Case 3:23-mc-80029-JCS Document 34 Filed 06/30/23 Page 43 of 51

                                   1            The Court further finds that the information sought in Request Nos. 2 and 3 goes beyond

                                   2   what is reasonably necessary to achieve the purpose of these requests. This includes the

                                   3   Government’s request for KYC due diligence questionnaire information, including individual

                                   4   User’s employment, net worth, and source of wealth (Request No. 2), and AML Logs and records

                                   5   of investigations related to AML monitored actions (Request No. 3). While this information might

                                   6   shed light on a tax violation by an account holder, at this stage of the Government’s investigation,

                                   7   it is only speculating on that point. To move beyond speculation, it must first address whether

                                   8   there is anything in the user’s transaction history – whether considered on its own or in

                                   9   combination with other information the IRS has collected on that user after it has identified the

                                  10   account holder – that makes it reasonable to conclude that the information it seeks in these

                                  11   requests will actually yield information relevant to that user’s tax compliance. At that point, the

                                  12   Government can issue another Doe summons or follow the preferable path of issuing a summons

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