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                              November 13, 2023

       Shannon Ghia
       Chief Executive Officer
       iShares Bitcoin Trust
       c/o iShares Delaware Trust Sponsor LLC
       400 Howard Street
       San Francisco, CA 94105

                                                        Re: iShares Bitcoin
Trust
                                                            Amendment No. 1 to
Registration Statement on Form S-1
                                                            Filed October 19,
2023
                                                            File No. 333-272680

       Dear Shannon Ghia:

            We have reviewed your amended 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.
Unless we note otherwise,
       any references to prior comments are to comments in our September 29,
2023 letter.

       Amendment No. 1 to Registration Statement on Form S-1

       General

   1.                                                   To the extent that you
intend to use a fact sheet, please provide us a copy for our review.
   2.                                                   Please describe the
AML, KYC and any other procedures conducted by the Trust or
                                                        Sponsor to determine,
among other things, whether the counter-party in any transactions is
                                                        not a sanctioned
entity. To the extent that the Trust, Sponsor, Authorized Participant,
                                                        Prime Broker or
Custodian may not know a counter-party, please add risk factor
                                                        disclosure regarding
the potential risk of transactions with a sanctioned entity and the
                                                        impact if such a
transaction occurs. In this regard, we note your disclosure in the third
                                                        risk factor on page 49.
   3.                                                   Please revise to
disclose whether and to what extent the Trust, Sponsor, Prime Broker,
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         Bitcoin Custodian or any other entity is permitted to loan, pledge or
rehypothecate any of
         the Trust   s assets.
Cover Page

4.       Please revise your cover page to disclose the termination date of the
offering, if any, and
         disclose that you are registering an indeterminate number of Shares.
Prospectus Summary
Trust Objective, page 2

5.       We note your disclosure on page 2 that "[t]he Bitcoin Custodian will
keep a substantial
         portion of the private keys associated with the Trust's bitcoin in
'cold storage' or similarly
         secure technology." Please revise to disclose the percentage of the
private keys held in
         cold storage, and, on page 83, disclose the Bitcoin Custodian's
policies regarding whether
         the private keys are held in cold or hot storage, and describe the
"similarly secure
         technology." Also, we note that the Prime Broker holds the Trading
Balance across a
         combination of omnibus hot wallets, cold wallets or in accounts in the
Prime Broker's
         name on a trading venue. Please disclose the percentage held in each
or the policies
         related to where the Trading Balance is held.
Summary Risk Factors
Risks Factors Related to Digital Assets, page 3

6.       Please revise your disclosure here and in the first risk factor on
page 16 to provide
         quantitative information that demonstrates the volatility of the price
of bitcoin.
The Offering
Trust expenses, page 8

7.       We note your disclosure in the last paragraph on page 9 that fees and
expenses incurred by
         the Trust and other Client Accounts will be allocated across the
entities on a pro
         rata basis. Please revise here to provide a brief description of and
revise your disclosure
         on page 68 to include a detailed description of the "other Client
Accounts," the entities
         across which the Sponsor will allocate the costs on a pro rata basis,
the types of expenses
         that may be allocated across the entities on a pro rata basis and the
types of expenses that
         are specifically attributable to the Trust or another Client Account.
In addition, please
         revise your disclosure on page 68 to describe the Sponsor's policies
related to allocating
         the costs across the entities. In this regard, we note that the
Sponsor may do so on a pro
         rata basis or "on a basis it considers to be equitable." Disclose the
criteria for determining
         whether the allocation of costs is equitable.
Dissolution events, page 13

8.       We note your disclosure in the fourth bullet point on page 14 that the
Sponsor may
         dissolve the Trust if "the value of the Trust is at a level at which
continued operation of
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         the Trust is not cost-efficient." Please revise to quantify or
otherwise describe what "cost-
         efficient" means.
9.       Please clarify whether Shareholders will be entitled to cash or
bitcoin upon the
         termination of the Trust. In addition, if Shareholders will be
entitled to cash, please revise
         your disclosure on page 74 to explain how the Trust's bitcoin will be
sold in connection
         with the termination of the Trust.
If the digital asset award for mining blocks and transaction fees, page 21

10.      Please revise the second bullet point in this risk factor to disclose
the current reward and
         an estimate of the next reward halving event.
Risk Factors Related to the Digital Asset Markets
The Index has a limited history, page 28

11.      Please expand this risk factor to quantify the CF Benchmarks Index's
limited history.
         Similarly, please expand the second risk factor on page 35 to describe
the Sponsor's
         limited history of operating investment vehicles involving crypto
assets.
Business of the Trust
Net Asset Value, page 62

12.      We note your disclosure on page 62 that "[i]f the CF Benchmarks Index
is not available or
         the Sponsor determines, in its sole discretion, that the CF Benchmarks
Index should not be
         used, the Trust   s holdings may be fair valued in accordance with the
policy approved by
         the Sponsor." Please revise to disclose here whether the Sponsor has
selected a
         methodology to use if the CF Benchmarks Index is not available, and,
if so, please
         describe the methodology. In addition, please disclose the "policy
approved by the
         Sponsor." To the extent that the Sponsor has not selected an
alternative methodology,
         please describe the Sponsor's criteria or policies related to
selecting a different
         methodology. Also disclose whether the Sponsor will notify investors
that the CF
         Benchmarks Index was not and/or will not be used, and, if so, how the
Sponsor will notify
         investors.
13.      Please disclose whether an intra-day indicative value per Share is
calculated throughout
         the day, and, if so, please disclose the methodology of the
calculation and where the
         calculation is published. Similarly, please disclose where the net
asset value of the Trust
         is published.
Valuation of Bitcoin; CF Benchmark Index, page 62

14.      We note your response to prior comment 6. Please address the following
with respect to
         your application of ASC Topic 820:
             Provide us with your accounting policy for determining the fair
value of bitcoin in
             accordance with ASC Topic 820.
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                As the trust is expected to primarily transact with the bitcoin
markets through the
              Authorized Participant, confirm for us that your determination of
the principal market
              will be from the perspective of the Authorized Participant.
                Tell us if you and/or your Authorized Participant plan to
transact in multiple markets.
              If so, please ensure that your accounting policy reflects that
fact and describe the
              types of markets in which you and/or your Authorized Participant
expect to transact.
              In that regard, we note that ASC 820-10-35- 36A includes
definitions of four types of
              markets (e.g. brokered market, dealer market, exchange market,
and principal to
              principal market).
                Clarify for us whether you anticipate your principal market
will be one which you or
              your Authorized Participant will be able to access and in which
you or your
              Authorized Participant will normally transact. Refer to ASC
Topics 820-10-35-6A
              and 820-10-35-5A respectively.
                In your disclosure on page 62 you disclose your intention to
engage a third party to
              obtain a price from a principal market for bitcoin, and that
price will form the basis
              for you determination of fair value in accordance with GAAP.
Please explain how
              your determination of    a principal market    for bitcoin is
consistent with the guidance
              in ASC Topic 820-10-35-6A which states the principal market shall
be considered
              from the perspective of the reporting entity.
15.      Please tell us what you mean by your disclosure that "[t]he selection
of exchanges for use
         in the CF Benchmarks Index is based on the accessible venues on which
the Trust will
         primarily execute transactions" and that "[t]he list of exchanges on
which the Trust
         executes transactions may evolve from time to time." Also disclose the
characteristics of
         a trading venue that is eligible to be a Constituent Exchange for the
CF Benchmarks
         Index.
16.      Please revise to describe the oversight procedures to ensure that the
Index is administered
         through the Index Administrator's codified policies for Index
integrity, and provide a brief
         description of the material codified policies for Index integrity.
17.      Please disclose whether the Trustee, the Trust Administrator or the
Sponsor monitors for
         unusual pricing such that the price may be corrected after 4:00 p.m.
Trust Expenses, page 68

18.      We note your disclosure that "[t]he Sponsor may, at its discretion and
from time to time,
         waive all or a portion of the Sponsor   s Fee for stated periods of
time." Please revise to
         disclose the criteria the Sponsor will consider or the reasons the
Sponsor may choose to
         waive the fee. Also disclose whether, and, if so, how the Sponsor will
notify the
         Shareholders of the "stated periods of time" for the waiver.
19.      We note your disclosure that "[t]o cover the Sponsor   s Fee and
expenses not assumed by
         the Sponsor, the Sponsor or its delegate will cause the Trust (or its
delegate) to convert
         bitcoin into U.S. dollars or other fiat currencies at the prevailing
exchange rate (less
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         applicable fees) which the Sponsor is able to obtain using
commercially reasonable
         efforts." Please revise to expand your disclosure to discuss how the
Sponsor will
         determine the "prevailing exchange rate" and disclose the "other fiat
currencies."
Description of the Shares and the Trust Agreement, page 69

20.      Please revise to disclose whether and, if so, how you will notify
Shareholders if the Trust
         has suspended creations and redemptions, and describe the potential
impact of suspending
         creations and redemptions. In addition, please revise to provide
examples of periods in
         which the Sponsor may determine that delivery, disposal or evaluation
of bitcoin is not
         reasonably practicable and reasons why the Sponsor may think it is
advisable to suspend
         creation and redemptions.
Deposit of Bitcoin; Issuance of Baskets, page 70

21.      Please disclose why and under what circumstances the Authorized
Participants will utilize
         designated third parties to deliver bitcoin to the Trust's Trading
Balance with the Prime
         Broker. Please also disclose when the bitcoin will be transferred to
the account with the
         Bitcoin Custodian, whether that is a condition to issuing a Basket to
the Authorized
         Participant, and who will be responsible for the cost of the on-chain
transaction.
The Custodians, page 83

22.      Please disclose the percentage of the private keys held in cold
storage, the geographic
         location of where the Trust's assets will be stored, the Custodian's
policies related to
         comingling assets, the limit on the amount that can be held in each
wallet, the amount to
         which the Bitcoin Custodian's insurance policies, including its
commercial crime
         insurance policy, cover the Trust's assets held by the Custodian,
whether the insurance
         provider or any other entity will be responsible for verifying the
existence of the bitcoin,
         the instructions that the Sponsor has provided to the Custodian
regarding airdrops or forks
         and the term of the agreement with the Bitcoin Custodian. In this
regard, we note that you
         have provided a summary of your custody procedures on page 2 but you
should discuss
         your custody procedures in greater detail here or include
cross-references to where
         investors can find such disclosure.
The Prime Broker and the Trade Credit Lender
The Prime Broker, page 84

23.      Please disclose the Prime Broker's policies related to whether the
Trust's assets are held in
         hot wallets, cold wallets or accounts in the Prime Broker's name on a
trading venue. In
         this regard, we note your disclosure on page 84 that "[t]he Prime
Broker is not required to
         hold any of the bitcoin in the Trust   s Trading Balance in cold
storage or to hold any such
         bitcoin in segregation, and neither the Trust nor the Sponsor can
control the method by
         which the Prime Broker holds the bitcoin credited to the Trust   s
Trading Balance." Also
         identify the Connected Trading Venues, how the Prime Broker selects
the Connected
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         Trading Venues and, whether the Trust may direct the Prime Broker to
use a specific
         Connected Trading Venue. In addition, we note your disclosure that
"[t]he Trust   s
         Trading Balance represents an entitlement to a pro rata share of the
bitcoin the Prime
         Broker has allocated to the omnibus hot wallets, omnibus cold wallets,
and the accounts in
         the Prime Broker   s name that the Prime Broker maintains at Connected
Trading Venues
         (which are typically held on an omnibus, rather than segregated,
basis)." Please clarify
         what you mean by "a pro rata share of the bitcoin."
24.      Please disclose the termination provisions and term of the Prime
Broker Agreement. In
         this regard, we note your disclosure that the "Sponsor may, in its
sole discretion, add or
         terminate prime brokers at any time" and that the "Prime Broker is
permitted to suspend or
         terminate the Prime Broker Agreement under certain circumstances." In
addition, disclose
         the policies and procedures that the Prime Broker has in place to
mitigate conflicts of
         interest when executing the Trust's orders.
25.      Please disclose the insurance coverage of the Prime Broker and the
degree to which the
         insurance policy protects the Trust's assets held by the Prime Broker.
26.      You state here that "the Trust may engage in purchases or sales of
bitcoin by placing
         orders with the Prime Broker." Please revise to explain under what
circumstances the
         Trust would need to engage in purchases of bitcoin.
The Trade Credit Lender, page 86

27.      Please revise to disclose the maximum amount of Trade Credit that the
Trade Financing
         Agreement permits to be outstanding at any one time. In addition,
please disclose the
         Trade Credit interest rate. Also disclose the Sponsor's policy
regarding whether it
         generally intends to fund the Trading Balance at the Prime Broker with
sufficient cash or
         bitcoin to pay fees and expenses or whether it regularly expects to
utilize the Trade
         Financing Agreement for such fees and expenses.
Seed Capital Investor, page 92

28.      Please describe how the proceeds from the sale of the Seed Creation
Baskets will be
         converted to bitcoin, including any costs or transaction fees payable
by the Trust
         associated with such conversion.
Conflicts of Interest, page 94

29.      Please revise your disclosure to briefly summarize the Sponsor's
policies and procedures
         designed to eliminate or mitigate conflicts of interest, including the
Compliance Manual,
         the Code of Ethics and the pre-clearance requirements for personnel
trading activity.
Exhibits
Amended and Restated Trust Agreement, page 104

30.      We note the forum, damages and jury provisions in Section 7.5 of the
Amended and
 Shannon Ghia
iShares Bitcoin Trust
November 13, 2023
Page 7
         Restated Trust Agreement. Please tell us whether Section 7.5 applies
to actions arising
         under the Securities Act or Exchange Act. To the extent that it does
not apply to actions
         arising under the Securities Act or Exchange Act, please amend the
agreement so that it
         clearly states that it does not or tell us how you will make investors
aware of the
         provisions' limited applicability. In addition, please add risk
factors related to these
         provisions.
       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 Sonia Bednarowski at 202-551-3666 or Justin Dobbie at 202-551-3469 with
any other
questions.



FirstName LastNameShannon Ghia                                Sincerely,
Comapany NameiShares Bitcoin Trust
                                                              Division of
Corporation Finance
November 13, 2023 Page 7                                      Office of Crypto
Assets
FirstName LastName