EX-10.510-Q·CIK 1720265·0001720265-26-000013

EX-10.5

View original filing on SEC EDGAR → ·  seen Nov 05, 2026, 16:08 EST

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FILING DETAILS

Filer
Zcash ETF
Period of report
Sep 30, 2026
Filed
Nov 05, 2026
SEC file no.
001-43458
State of inc.
DE
SIC
6221
Location
STAMFORD, CT

Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

ADVERTISING REVIEW AND FILING AGENT AGREEMENT

THISAGREEMENTismadeandenteredintoasofthis5thdayofNovember,2026(“Effective Date”), by and between each entity listed on Appendix I hereto, separately and not jointly (each, individually, the “Trust”),Grayscale Investments Sponsors, LLC, a Delaware limited liability company (the “Sponsor”), and Grayscale Securities,LLC,aDelaware limited liability company (the “Advertising Review and Filing Agent”) (each, a “Party” and together, the “Parties”).

WHEREAS, the Trust, which is sponsored by the Sponsor, is a statutory trust organized under the laws of the State of Delaware;

WHEREAS, the Trust has filed with the U.S. Securities and Exchange Commission (the “SEC”) a Registration Statement for the Trust under the Securities Act of 1933, as amended (the “1933 Act”);

WHEREAS, the Trust intends to create and redeem shares of beneficial interest in the Trust (the “Shares”) only in creation unit aggregations (“Creation Unit”) on a continuous basis, and list the Shares on one or more national securities exchanges;

WHEREAS, the Sponsor desires to retain Grayscale Securities to provide certain services in connection with the offering of the Shares (as amended from time to time);

WHEREAS, Grayscale Securities is registered as a broker-dealer under the Securities Exchange Act of 1934, as amended (the “1934 Act”), and is a member of the Financial Industry Regulatory Authority, Inc. (“FINRA”); and

WHEREAS, Grayscale Securities is willing to provide certain services to the Trust on the terms and conditions hereinafter set forth.

NOW THEREFORE, in consideration of the promises and mutual covenants herein contained, and for other good and valuable consideration, the receipt of which is hereby acknowledged, the parties hereto, intending to be legally bound, do hereby agree as follows:

1.

Services.

Grayscale SecuritiesagreestoserveastheAdvertising Review and FilingAgent oftheTrustonthetermsandfortheperiodset forth in this Agreement.

2.

Definitions.

Wherever they are used herein, the following terms have the following respective meanings:

“Prospectus” means the prospectus constituting partoftheRegistrationStatementoftheTrustunderthe1933Actassuchprospectusmay be amended or supplemented and filed with

1


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

the SECfrom time to time;

“RegistrationStatement”meanstheregistrationstatementmostrecentlyfiledfromtimeto timebytheTrustwiththeSECandeffectiveunderthe1933 Act,assuch registrationstatementis amended by any amendments thereto at the time in effect;

AllothercapitalizedtermsusedbutnotdefinedinthisAgreementshallhavethemeanings ascribed to such terms in the Registration Statement and the Prospectus.

3.

Dutiesofthe Advertising Review and Filing Agent

a)

The Advertising Review and Filing Agentshallusecommerciallyreasonableeffortstoprovidethefollowingservicestothe Trust:

(i)

review and approve, prior to first use, any marketing materials used by or on behalf of the Sponsor or the Advertising Review and Filing Agent (“MarketingMaterials”)forcompliance with applicable SEC and FINRA advertising rules, and file with FINRA all such Marketing Materials required to be filed with FINRA. The Advertising Review and Filing Agent agrees to furnish to the Sponsor any comments provided by FINRA with respect to such materials; and

(ii)

the services set forth on Appendix II attached hereto, as it may be amended from time to time.

b)

It is understood that the Advertising Review and Filing Agent will not open or maintain customer accounts or handle orders for any Trust, including orders for the creation or redemption of Creation Units.

c)

Consistent with this Section 3, the Advertising Review and Filing Agent may prepare and distribute marketing literature or other material as it may deem appropriate in consultation with the Sponsor, provided such marketing literature is reviewed and, as applicable, filed in accordance with Section 3(a)(i), and such marketing literature and its distribution comply with applicable law and regulations.

d)

Theservicesfurnishedbythe Advertising Review and Filing Agenthereunderarenottobedeemedexclusiveandthe Advertising Review and Filing Agent shall be free to furnish similar services to others so long as its services under this Agreement are not impaired thereby.

4.

DutiesoftheSponsor

a)

The Sponsor shall, and shall cause the Trust to, submit all Marketing Materials to the Advertising Review and Filing Agent for review and approval prior to first use, and shall not use any Marketing Materials that have not been approved by the Advertising Review and Filing Agent.

2


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

b)

TheSponsorshalldelivertothe Advertising Review and Filing Agentcopiesofthefollowingdocuments:

(i)

thethencurrentProspectusfortheTrust;

(ii)

anyrelevantpoliciesandproceduresadoptedbytheSponsorortheTrustorits service providers that are applicable to the services provided by the Advertising Review and Filing Agent; and

(iii)

anyotherdocuments,materials,orinformationthatthe Advertising Review and Filing Agentshallreasonably request to enable it to perform its duties pursuant to this Agreement.

c)

TheSponsorshallthereafterdelivertothe Advertising Review and Filing Agent assoonasisreasonablypractical any and all amendments to the documents required to be delivered under this Section.

d)

The Sponsor will make it known that Prospectuses and productdescriptions areavailable bymaking suresuch disclosures arein all marketing and advertising materials prepared by the Sponsor.

5.

Fees and Expenses.

a)

In consideration of the services to be performed by the Advertising Review and Filing Agent hereunder as set forth on Appendix IIattached hereto and as it may be amended from time- to-time, the Sponsor will pay the Advertising Review and Filing Agent a fee in an amount to be agreed upon in writing by the Parties hereto from time-to-time, subject to any limitation imposed by any law, rule or regulation applicable to any of the Parties hereto.

b)

The Sponsor shall reimburse the Advertising Review and Filing Agent for (i) all filing and review fees (including any expedited review fees) charged by FINRA in connection with the filing of Marketing Materials pursuant to Section 3(a)(i), which shall not require the prior consent of the Sponsor, and (ii) any other reasonable fees or disbursements incurred by the Advertising Review and Filing Agent in connection with the performance by the Advertising Review and Filing Agent of its duties under and pursuant to this Agreement, with the prior written consent of the Sponsor. Further, unless otherwise agreed to by the Parties hereto in writing, the Advertising Review and Filing Agent shall not be responsible for fees and expenses in connection with (i) preparing, printing and mailing each Trust’s offering materials, and any supplements thereto, to existing shareholders (ii) preparing, setting in type, printing and mailing any report or other communication to shareholders of such Trust, and (iii) any registration, qualification, notice filing or fee required under the securities or blue-sky laws of any state with respect to the Shares.

6.

Representations,WarrantiesandCovenants ofthe Sponsor.

A.

TheSponsorherebyrepresentsandwarrantstothe Advertising Review and Filing

3


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

Agent,whichrepresentationsand warranties shall be deemed to be continuing throughout the term of this Agreement, that:

(i)

it is duly organized and in good standing under the laws of its jurisdiction of organization;

(ii)

this Agreement has been duly authorized, executed and delivered by the Sponsor and, when executed and delivered, will constitute a valid and legally binding obligation of the Sponsor, enforceable in accordance with its terms, subject to bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting the rights and remedies of creditors and secured parties;

(iii)

itisconductingitsbusinessincomplianceinallmaterialrespectswithallapplicable laws and regulations, both state and federal, and has obtained all regulatory approvals necessary to carry on its business as now conducted;

(iv)

the Trust’s Registration Statement and the Trust’s Prospectus, and sales and promotionalliteraturehavebeenorwillbeprepared,inallmaterialrespects,in conformity with the requirements of the 1933 Act and SEC rules and regulations thereunder;

(v)

the Trust’s Registration Statement and Prospectus do not and will not contain any untrue statement of material fact or omit to state any material fact required to be stated therein or necessarytomakethestatementsthereinnotmisleading,andthat all statementsor information furnished to the Advertising Review and Filing Agent pursuant to this Agreement shall be true and correct in all material respects;

(vi)

all sales or promotional literature shall contain all statements required to be stated thereininaccordancewiththe1933ActandSECrulesandregulations;anddonot and will not contain any untrue statement of material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading; and

(vii)

all necessary approvals, authorizations, consents, or orders of or filings with any federal,state,localorforeigngovernmentalorregulatorycommission,board,body, authority or agency have been or will be obtained by the Trust in connection with the issuance and sale of the Shares, including registration of the Shares under the 1933 Act, and any necessary qualification under the securities or blue-sky laws of the various jurisdictions in which the Shares are being offered.

B.

The Sponsor shall fully cooperate in the efforts of the Advertising Review and Filing Agent in the provision of the services.Inaddition,theSponsorshallkeepthe Advertising Review and Filing Agentinformedofitsmaterialaffairsastheyrelate to the Trust and shall provide to the Advertising Review and Filing Agent from time-to-time copies of information that the Advertising Review and Filing Agent may reasonably request for use in connection with the provision of the Services.

4


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

7.

Representations,WarrantiesandCovenantsofthe Advertising Review and Filing Agent.

A.

The Advertising Review and Filing Agentherebyrepresentsandwarrantstothe Sponsor,whichrepresentationsand warranties shall be deemed to be continuing throughout the term of this Agreement, that:

(i)

it is duly organized and existing under the laws of the jurisdiction of its organization, with full power to carry on its business as now conducted, to enter into this Agreement and to perform its obligations hereunder;

(ii)

thisAgreementhasbeen dulyauthorized,executedanddelivered by the Advertising Review and Filing Agentand, whenexecutedanddelivered,willconstituteavalidandlegallybindingobligation of the Advertising Review and Filing Agent, enforceable in accordance with its terms, subject to bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting the rights and remedies of creditors and secured parties;

(iii)

itisconductingitsbusinessincomplianceinallmaterialrespectswithallapplicable laws and regulations, both state and federal, and has obtained all regulatory approvals necessary to carry on its business as now conducted; and it is registered as a broker-dealer under the 1934 Act and is a member in good standing of FINRA.

8.

Indemnification.

a)

The Sponsor shall indemnify, defend and hold the Advertising Review and Filing Agent, its affiliates and each of their respective members, managers, directors, officers, employees, representatives and any personwhocontrolsorpreviouslycontrolledthe Advertising Review and Filing AgentwithinthemeaningofSection15of the1933Act(collectively,the“Advertising Review and Filing AgentIndemnitees”),freeandharmlessfromandagainst anyandalllosses,claims,demands,liabilities,damagesandexpenses(includingthecosts of investigating or defending any alleged losses, claims, demands, liabilities, damages or expenses and any reasonable counsel fees incurred in connection therewith) (collectively, “Losses”) that any Advertising Review and Filing Agent Indemnitee may incurarising out of or relating to,(i) the Sponsor’s breach of any of its obligations, representations, warranties or covenants contained in this Agreement; (ii) the Sponsor’s failure to comply in all material respects with any applicable laws, rules or regulations; or (iii) any claim that the Prospectus, sales literature and advertising materials or other information filed or made public by the Trust (asfromtimetotime amended)includesorincludedanuntruestatementofamaterialfact oromitsoromittedtostateamaterialfactrequiredtobestatedthereinornecessaryinorder to make the statements therein not misleading provided, however, that the Sponsor’s obligationtoindemnifyanyofthe Advertising Review and Filing Agent Indemniteesshallnotbedeemedtocoverany Losses arising out of any untrue statement or alleged untrue statement or omission or alleged omission made in the Prospectus or any such advertising materials or sales literature or other information filed or made public by the Trust in reliance upon and in conformity with

5


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

information provided by the Advertising Review and Filing Agent to theTrust, in writing, foruse in such Prospectus or any such advertising materials or sales literature.

b)

The Advertising Review and Filing Agent shall indemnify, defend and hold the Sponsor, its affiliates, and each of their respective directors, officers, employees, representatives, and any person who controls or previously controlled the Sponsor within the meaning of Section 15 of the 1933 Act (collectively, the “Sponsor Indemnitees”), free and harmless from and against any and all LossesthatanySponsorIndemniteemayincurunderthe1933Act,the1934Act,anyother statute (including Blue Sky laws) or any rule or regulation thereunder, or under common laworotherwise,arisingoutoforrelatingto(i)the Advertising Review and Filing Agent’sbreachofanyofitsobligations, representations,warrantiesorcovenantscontainedinthisAgreement;(ii)the Advertising Review and Filing Agent’sfailure to comply in all material respects with any applicable laws, rules, or regulations; or (iii) anyclaimthattheProspectus,salesliteratureandadvertisingmaterialsorotherinformation filedormadepublicbytheSponsor(asfromtimetotimeamended)includeorincludedan untrue statement of a material fact or omitted to state a material fact required to be stated thereinornecessaryinordertomakethestatementsthereinnotmisleading,insofarassuch statement or omission was made in reliance upon, and in conformity with information furnishedtotheSponsorbythe Advertising Review and Filing Agent,inwriting,foruseinsuchProspectus,salesliterature and advertising materials or other information filed or made public by the Sponsor.

c)

In no case (i) is the indemnification provided by an indemnifying party to be deemed to protectagainstanyliabilitytheindemnifiedpartywouldotherwisebesubjecttobyreason ofbad faith,gross negligence, orwillfulmisconductintheperformanceofitsdutiesorby reasonofitsrecklessdisregardofitsobligationsanddutiesunderthisAgreement,or(ii)is the indemnifying party to be liable under this Section with respect to any claim made against any indemnified party unless the indemnified party promptly notifies the indemnifying party in writing of the claim within a reasonable time after the summons or otherfirstwrittennotificationgivinginformationofthenatureoftheclaimshallhavebeen servedupontheindemnifiedparty(oraftertheindemnifiedpartyshallhavereceivednotice of service on any designated agent).

d)

Failure to notify the indemnifying party of any claim shall not relieve the indemnifying partyfromanyliabilitythatitmayhavetotheindemnifiedpartyagainstwhomsuchaction isbrought,onaccountofthisSection,unlessfailureordelaytosonotifytheindemnifying party prejudices the indemnifying party’s ability to defend against such claim. The indemnifyingpartyshallbeentitledtoparticipateatitsownexpenseinthedefenseor,ifit so elects, to assume the defense of any suit brought to enforce the claim. In the event that indemnifying party elects to assume the defense of any suit and retain counsel, the indemnified party shall bear the fees and expenses of any additional counsel retained by them. If the indemnifying party does not elect to assume the defense of any suit, it will reimburse the indemnified party for the reasonable fees and expenses of any counsel retainedbytheindemnifiedparty.

e)

No indemnified party shall settle any claim against it for which it intends to seek

6


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

indemnificationfromtheindemnifyingparty,underthetermsofsection8(a)or8(b)above, withoutpriorwrittennoticetoandconsentfromtheindemnifyingparty,whichconsentshall not beunreasonably withheld. No indemnified orindemnifying party shallsettle any claim unless the settlement contains a full release of liability with respect to the other party in respect of such action. This section 8 shall survive the termination of this Agreement.

9.

LimitationsonDamages.

Neither Party shall be liable for any consequential, special, or indirect losses or damages sufferedbytheotherParty,whetherornotthelikelihoodofsuchlossesordamageswasknownby the Party.

10.

ForceMajeure.

NeitherPartyshallbeliableforlosses,delays,failure,errors,interruptionorlossofdataoccurring directlyorindirectlybyreasonofcircumstancesbeyonditsreasonablecontrol,including,without limitation, Acts of Nature (including fire, flood, earthquake, storm, hurricane or other natural disaster); action or inaction of civil or military authority; acts of foreign enemies; war; terrorism; riot; insurrection; sabotage; epidemics; labor disputes; civil commotion; or interruption, loss or malfunction of utilities, transportation, computer or communications capabilities, and the other Party shall have no right to terminate this Agreement in such circumstances.

11.

Duration and Termination.

a)

This Agreement shall become effective as of the date first set forth above.Unless sooner terminated as provided herein, this Agreement shall continue in effect for two years from the date hereof.Thereafter, if not terminated, this Agreement will be automatically continued in effect for successive one-year periods.

b)

Notwithstanding the foregoing, this Agreement may be terminated with respect to one or more Trusts, without the payment of any penalty, upon no less than:(i) 30 days’ written notice by the Sponsor; or (ii) 90 days’ written notice by the Advertising Review and Filing Agent.

12.

Confidentiality.

During the term of this Agreement, the Advertising Review and Filing Agent and the Sponsor may have access to non-public confidentialinformation relatingtosuchmattersaseitherparty’sbusiness, tradesecrets,systems, procedures, manuals, products, contracts, personnel, and clients.As used in this Agreement, “Confidential Information” means all information, whether written, visual oral or electronic, that may be disclosed or made available by a party. Confidential Information includes non-public or proprietary information that may be financial information, proposals and presentations, reports, forecasts, inventions, improvements, and other intellectual property; trade secrets; know-how; designs,processesorformulae;software;marketorsalesinformationorplans;customerlists;and business plans, prospects and opportunities (such as possible acquisitions or dispositions of businesses orfacilities). Confidential Information includesinformation developed by eitherparty inthecourseofengagingintheactivitiesprovidedforinthisAgreement,unless:(i)theinformation isorbecomespublicly knownthroughlawfulmeans; (ii)the

7


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

information isdisclosed to the other party without a confidential restriction by a third party who rightfully possesses the information and did not obtain it, either directly or indirectly, from one of the parties, as the case may be, or any of their respective principals, employees, affiliated persons, or affiliated entities. The parties understandandagreethatallConfidentialInformationshallbekeptconfidentialbytheotherboth during and after the term of this Agreement.Each party shall maintain commercially reasonable information security policies and procedures for protecting Confidential Information. The parties furtheragreethattheywillnot,withoutthepriorwrittenapprovalbytheotherparty,disclosesuch ConfidentialInformation,orusesuchConfidentialInformationinanyway,eitherduringtheterm ofthisAgreementoratanytimethereafter,except(i)asrequiredinthecourseofthis Agreement, (ii)asprovidedbytheotherparty,or(iii)asrequiredbyapplicablelaw,rule,orregulationor(iv) in response to (A) a routine self-regulatory examination or (B) a request for information directed at the receiving party.

13.

Notice

AnynoticeorothercommunicationauthorizedorrequiredbythisAgreementtobegiventoeither partyshallbeinwritinganddeemedtohavebeengivenwhendeliveredinpersonorbyconfirmed facsimile,email,orpostedbycertified mail,returnreceiptrequested, tothefollowing address (or such other address as a party may specify by written notice to the other):

(i)To the Advertising Review and Filing Agent:
GrayscaleSecurities,LLC290 Harbor Drive, 4th Floor Stamford, CT 06902Telephone:***Attn: ETF TeamEmail:***With copy of all notices to:***
(ii) To theSponsor:
GrayscaleInvestments Sponsors,LLC290 Harbor Drive, 4th Floor Stamford, CT 06902Telephone:***Attn: ETF TeamEmail:***With copy of all notices to: ***

14.

Modifications.

8


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

The terms of this Agreement shall not be waived, altered, modified, amended, or supplemented in any manner whatsoever except by a written instrument signed by the Advertising Review and Filing Agent and the Sponsor.

15.

Governing Law.

This Agreement shall be construed in accordance with the laws of the State of New York, without regard to the conflicts of law principles thereof.

16.

Assignment.

ThisAgreementmaynotbeassignedbyeitherPartywithoutthepriorwritten consent of the other Party.This Agreement shall be binding upon and inure to the benefit of the Parties’ representatives, successors, heirs, and permitted assigns, as applicable.A change in control shall not be construed to be an assignment.

17.

Survival.

The provisions of Sections 8, 9, 12, 15, 18, 19 and 20 of this Agreement shall survive any termination of this Agreement.

18.

Anti-Money Laundering.

The Advertising Review and Filing Agent and Sponsor both represent and warrant to the other that it has, and shall maintain, an anti-money laundering program (“AML Program”) that, at a minimum, (i) designates a compliance officer to administer and oversee the AML Program, (ii) provides ongoing employee training, (iii) includes an independent audit function to test the effectivenessoftheAMLProgram,(iv)establishesinternalpolicies,procedures,andcontrolsthat are tailored to its particular business, (v) provides for the filing of all necessary anti-money launderingreportsincluding,butnotlimitedto,currencytransactionreportsandsuspiciousactivity reports,and(vi)allowsforappropriateregulatorstoexamineitsanti-moneylaunderingbooksand records.

19.

Miscellaneous.

The captions in this Agreement are included for convenience of reference only and in no way define or delimit any of the provisions hereof or otherwise affect their construction or effect. Any provision of this Agreement which may be determined by competent authority to be prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors. This Agreement shall be construed as if drafted jointly by both the Advertising Review and Filing Agent and the Sponsor and no presumptions shall arise favoring any party by virtue of authorship of any provision of this Agreement. This Agreement may be executed by the Parties hereto in any number of counterparts, and all of the counterparts taken together shall be deemed to

9


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

constitute one and the same document. Nothing herein contained shall prevent the Advertising Review and Filing Agent from entering into similar arrangements or from providing the services contemplated hereunder to other investment companies or investment vehicles. This Agreement has been negotiated and executed by the parties in English. In the event any translation of this Agreement is prepared for convenience or any other purpose, the provisions of the English version shall prevail.

20.

Limitation of Liability; LiabilityofSponsor.

Itisexpresslyunderstoodandagreedbythe Advertising Review and Filing Agentthat:

(a)

nothing herein contained shall be construed as creating any liability on the Sponsor, individually or personally, to perform any covenant of the Trust either expressed or implied contained herein, all such liability, if any, being expressly waived by the parties hereto and by any person claiming by, through or under the parties hereto.

(b)

The Advertising Review and Filing Agent agrees that the obligations assumed by each Trust under this contract shall be limited in all cases to such Trust and its assets except as expressly set forth herein. The Advertising Review and Filing Agent agrees that it shall not seek satisfaction of any such obligation from the shareholders, any individual shareholder, officer, representative or agent of such Trust.

21.

Entire Agreement.

This Agreement constitutes the entire agreement between the Parties hereto with respect to the subject matter hereto, and supersedes all prior communications, understandings and agreements relating to the subject matter hereof, whether oral or written.

[SIGNATURE PAGE FOLLOWS]

10


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Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

INWITNESSWHEREOF,thepartiesheretohavecausedthisAgreementtobeexecuted by a duly authorized officer on one or more counterparts as of the date first above written.

GRAYSCALE SECURITIES,LLC, as Advertising Review and Filing Agent

By: /s/ Craig Salm

Craig Salm, Chief Legal Officer and Interim Chief Compliance Officer

GRAYSCALEINVESTMENTS SPONSORS,LLC, for and on behalf of each entity listed on Appendix I

By:GRAYSCALEINVESTMENTS SPONSORS,LLC

By: /s/ Kathryn Masci

Kathryn Masci, Interim Chief Financial Officer

GRAYSCALEINVESTMENTS SPONSORS,LLC,as Sponsor

By:GRAYSCALEINVESTMENTS SPONSORS,LLC

By: /s/ Kathryn Masci

Kathryn Masci, Interim Chief Financial Officer

11


Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

APPENDIX I

Trusts
Grayscale Avalanche Staking ETF
Grayscale Bitcoin Cash Trust (BCH)
Grayscale Bitcoin Mini Trust ETF
Grayscale Bitcoin Trust ETF
Grayscale Bittensor Trust (TAO)
Grayscale BNB ETF
Grayscale Chainlink Trust ETF
Grayscale CoinDesk Crypto 5 ETF
Grayscale Dogecoin Trust ETF
Grayscale Ethereum Mini Trust ETF
Grayscale Ethereum Trust ETF
Grayscale Hyperliquid Staking ETF
Grayscale Litecoin Trust (LTC)
Grayscale Solana Staking ETF
Grayscale Stellar Lumens Trust (XLM)
Grayscale Sui Staking ETF
Grayscale XRP Trust ETF
The Zcash ETF

Exhibit 10.5

Certain confidential information contained in this document, marked by [***], has been omitted because the Registrant has determined that the information (i) is not material and (ii) is of the type that the registrant treats as private or confidential.

APPENDIX II

List of Services

The Advertising Review and Filing Agent shall perform the following services for each Trust:

•

Create an online website, to be hosted on the Advertising Review and Filing Agent’s platform, throughwhich marketingmaterialsofeach Trustmaybedistributedandaccessed.

•

Facilitate sales calls by the Advertising Review and Filing Agent registered representatives to theperson(s) and entity(s) targeted by the ongoing marketing/sales campaign for each Trust (“Target Audience”).

•

ConductOutreachtotheTargetAudiencethroughemailandotherelectroniccommunications.

•

Promote each Trust to suitable users of the Advertising Review and Filing Agent’s platform.

•

Promote each Trust using social and digitalmedia.

•

Respond to questions about the Sponsor’s marketing materials as soon as reasonably practicable and direct all other questions to the Sponsor.

•

Perform such additional distribution and marketing related services as may be agreed among the parties from time totime.


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