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United States securities and exchange commission logo





                             November 16, 2023

       Michael Sonnenshein
       Chief Executive Officer
       Grayscale Bitcoin Trust (BTC)
       290 Harbor Drive, 4th Floor
       Stamford, Connecticut 06902

                                                        Re: Grayscale Bitcoin
Trust (BTC)
                                                            Registration
Statement on Form S-3
                                                            Filed October 19,
2023
                                                            File No. 333-275079

       Dear Michael Sonnenshein:

              We have conducted a limited review of your registration statement
and have the
       following comments.

              Please respond to this letter by amending your registration
statement and providing the
       requested information. If you do not believe a comment applies to your
facts and circumstances
       or do not believe an amendment is appropriate, please tell us why in
your response.

              After reviewing any amendment to your registration statement and
the information you
       provide in response to this letter, we may have additional comments.

       Registration Statement on Form S-3

       General

   1.                                                   Please confirm your
understanding that we will not be in a position to declare your Form
                                                        S-3 effective until all
outstanding comments regarding your Form 10-K for the fiscal year
                                                        ended December 31, 2022
have been resolved. In addition, to the extent that any
                                                        comments related to our
review of your Form 10-K apply to disclosure in the Form S-3,
                                                        please make
corresponding revisions to all affected disclosure. Please also confirm that
                                                        you will include in
future Exchange Act filings all applicable disclosures you include, or
                                                        will include, in your
Form S-3 in response to our comments.
   2.                                                   We note that the Shares
are currently quoted on OTCQX and that you intend to list the
                                                        Shares on NYSE Arca in
connection with this offering. We also note that the Shares
                                                        currently trade at a
discount to the Digital Asset Holdings per Share. Please tell us how
                                                        you expect the offering
to commence and the arbitrage mechanism to function in light of
                                                        the existing market
dynamics. Please discuss whether there will be an initial creation
 Michael Sonnenshein
FirstName LastNameMichael
Grayscale Bitcoin Trust (BTC)Sonnenshein
Comapany 16,
November   NameGrayscale
              2023         Bitcoin Trust (BTC)
November
Page 2    16, 2023 Page 2
FirstName LastName
         Basket, whether you expect Authorized Participants will be
incentivized to immediately
         place redemption orders, and any material risks you have identified
related to the
         transition to trading on NYSE Arca. Please also revise your summary to
quantify the most
         recent closing price of the Shares quoted on OTCQX as compared to the
Digital Asset
         Holdings per Share and to describe the recent history of trading at a
discount.
Cover Page

3.       Please revise your disclosure to identify the Authorized Participants
as underwriters, and
         quantify the number of Bitcoins required to create a Basket of Shares
as of the date of the
         prospectus.
Prospectus Summary
Trust Overview, page 1

4.       Please revise to confirm, if true, that the Trust's assets will not be
loaned or pledged, or
         serve as collateral for any loan, margin, rehypothecation, or other
similar activities to
         which you or your affiliates are a party.
Bitcoin History, page 3

5.       Please revise to provide quantitative information that demonstrates
the volatility of the
         price of Bitcoins.
The Offering
Index Price, page 4

6.       We note that Crypto.com was recently added to the list of Constituent
Exchanges. Please
         revise your disclosure to address the following:
             Include an updated table with market share and volume information
for each
              Constituent Exchange;
             Include a brief description of Crypto.com; and
             Disclose the date that the Index was launched and the extent to
which any Constituent
              Exchanges have previously been added or removed from the Index.
Trust Expenses, page 8

7.       Please revise your disclosure to:
             Disclose how the Bitcoins will be sold and exchanged for U.S.
dollars to pay the
             Additional Trust Expenses, including whether the Sponsor will use
a third party or
             affiliate to assist in the sale of the Trust   s Bitcoins, and if
so, disclose any risks or
             conflicts of interests that may exist in connection with how the
Sponsor arranges for
             the sale of the Trust   s Bitcoins; and
             Disclose whether the Trust is responsible for paying any costs
associated with the
             transfer of Bitcoins to the Sponsor or the sale of the Bitcoins or
if these expenses are
             included in the Sponsor's Fee.
 Michael Sonnenshein
Grayscale Bitcoin Trust (BTC)
November 16, 2023
Page 3
8.       Please reconcile your disclosure here in which you have left the
Sponsor's Fee blank with
         the disclosure on page 39 in which you state that the Sponsor's Fee is
2.0%.
Termination Events, page 10

9.       We note that upon dissolution of the Trust and surrender of Shares by
the shareholders,
         shareholders will receive a distribution in U.S. dollars or Bitcoin,
Incidental Rights and/or
         IR Virtual Currency, at the sole discretion of the Sponsor. Please
revise to disclose how
         the Sponsor will exercise such discretion. In addition, with respect
to cash payments,
         please explain how the Sponsor will sell the Trust's Bitcoins in
connection with the
         termination of the Trust.
Liquidity Providers, page 11

10.      Please revise your disclosure to identify the Liquidity Providers.
Please also disclose
         whether there are any specific criteria for engagement as a Liquidity
Provider and whether
         and to what extent there will be any contractual obligations on the
part of the Liquidity
         Providers to participate in Cash Orders for creations or redemptions.
Risk Factors, page 12

11.      Please revise your disclosure to address the competition you will face
in launching and
         sustaining your product, including the risk that your timing in
reaching the market and
         your fee structure relative to other Bitcoin ETPs could have a
detrimental effect on your
         product.
12.      Please discuss the risks of fraud, manipulation, front-running and
wash-trading at Bitcoin
         trading platforms and the potential impact on the price of Bitcoin and
the value of the
         Shares.
Description of Shares
Incidental Rights and IR Virtual Currency, page 15

13.      We note that the Sponsor intends to evaluate each fork, airdrop or
similar occurrence on a
         case-by-case basis in consultation with the Trust   s legal advisers,
tax consultants, and
         Custodian. Please revise to disclose:
             Whether the Trust has controls in place to monitor for a material
hard fork or airdrop;
             and
             How you will inform investors of any changes in the Trust   s
policy with respect to
             forks and airdrops.
Creation
FirstNameand  Redemption of Shares,
           LastNameMichael            page 18
                               Sonnenshein
Comapany
14.        NameGrayscale
       Please                Bitcoin
              revise to disclose     Trustinvestors
                                 whether    (BTC) will have access to an
intra-day NAV
       calculation.
November   16, 2023 Page 3
FirstName LastName
 Michael Sonnenshein
FirstName LastNameMichael
Grayscale Bitcoin Trust (BTC)Sonnenshein
Comapany 16,
November   NameGrayscale
              2023         Bitcoin Trust (BTC)
November
Page 4    16, 2023 Page 4
FirstName LastName
15.      Please revise your disclosure to discuss:
             Whether your Authorized Participants will be required to maintain
an account with
             your Custodian;
             The specifics of how an Authorized Participant, or a Liquidity
Provider on behalf of
             an Authorized Participant, would transfer the Total Basket Amount
to the Trust's
             Digital Asset Account, including the various steps necessary to
transfer the Bitcoin to
             its ultimate storage location with the Custodian;
             Why and under what circumstances the Authorized Participants will
utilize an AP
             Agent to transfer the Bitcoin to the Custodian;
             Whether and how the Authorized Participants are able to
participate directly in the
             acquisition, transfer or receipt of Bitcoins; and
             Whether and to what extent creation and redemption transactions
will be settled on-
             chain or off-chain, and any risks associated with the settlement
process.
16.      Please discuss whether and to what extent the size of your creation
and redemption
         baskets could have an impact on the arbitrage mechanism in light of
the market for
         Bitcoin.
17.      We note your disclosure that Authorized Participants do not pay a
transaction fee to the
         Trust in connection with the creation of Baskets, but there may be
transaction fees
         associated with the validation of the transfer of Bitcoins by the
Bitcoin Network, and
         service providers may charge administrative fees for order placement
and other services
         related to creation of Baskets. Please revise to disclose who will be
responsible for the
         payment of such fees.
18.      We note your disclosure that the Sponsor may in its sole discretion
limit the number of
         Shares created pursuant to Cash Orders on any specified day without
notice to the
         Authorized Participants and may direct the Marketing Agent to reject
any Cash Orders in
         excess of such capped amount. You also state that the redemption of
Shares pursuant to
         Cash Orders will only take place if approved by the Sponsor in
writing, in its sole
         discretion and on a case-by-case basis. Please revise to describe how
and on what basis
         the Sponsor will exercise such discretion and any factors the Sponsor
will take into
         consideration in setting such limits. Please also discuss any risks
that the Trust will be
         unable to satisfy creation and redemption orders made in cash.
19.      Please reconcile the disclosure in your most recent Form 10-K that the
Authorized
         Participant must transfer the Total Basket Amount to the Trust no
later than 6:00 p.m.
         New York time on the trade date, with the disclosure in the Form S-3
that such transfer
         must occur on T+1 or T+2, as established at the time of order
placement. Please also
         revise to confirm, if true, that any price differential of Bitcoins
between the order date and
         the transfer date will be borne solely by the Authorized Participant,
or Liquidity Provider
         on behalf of the Authorized Participant until such Bitcoins have been
received by the
         Trust.
 Michael Sonnenshein
FirstName LastNameMichael
Grayscale Bitcoin Trust (BTC)Sonnenshein
Comapany 16,
November   NameGrayscale
              2023         Bitcoin Trust (BTC)
November
Page 5    16, 2023 Page 5
FirstName LastName
20.      You state here that although the Trust issues and redeems Shares in
increments of a
         Basket, or 100 Shares, at this time the Trust is only accepting
creation and redemption
         orders from Authorized Participants in increments of 100 Baskets, or
10,000 Shares.
         Please revise to discuss and quantify what discretion the Trust has to
increase or decrease
         the size of creation and redemptions orders it will accept from
Authorized Participants,
         and under what circumstances the Trust would expect to exercise that
discretion.
Suspension or Rejection of Orders and Total Basket Amount, page 21

21.      Please revise to disclose whether and how you will notify Shareholders
if the Trust has
         suspended creations and redemptions, and describe the potential impact
of suspending
         creations and redemptions.
Plan of Distribution, page 31

22.      Please revise your disclosure to discuss the potential impact on the
arbitrage mechanism
         of the price volatility, trading volume, and price differentials
across Bitcoin trading
         platforms.
        We remind you that the company and its management are responsible for
the accuracy
and adequacy of their disclosures, notwithstanding any review, comments, action
or absence of
action by the staff.

       Refer to Rules 460 and 461 regarding requests for acceleration. Please
allow adequate
time for us to review any amendment prior to the requested effective date of
the registration
statement.

       Please contact David Irving at 202-551-3321 or Robert Telewicz at
202-551-3438 if you
have questions regarding comments on the financial statements and related
matters.
Please contact Lulu Cheng at 202-551-3811 or Justin Dobbie at 202-551-3469 with
any
other questions.



                                                               Sincerely,

                                                               Division of
Corporation Finance
                                                               Office of Crypto
Assets
cc:      Joseph Hall
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