Does Crypto Custody Relief Cover Tokenized Fund Shares?
Probably not, and the reason is a category boundary rather than a policy judgement. The SEC staff's September 2025 no-action letter permits registered advisers and funds to treat a state-chartered trust company as a bank for custody purposes — but it is written for crypto assets, and a tokenized fund share is classified as a digital security under the March 2026 SEC-CFTC release. Those are distinct categories in the agencies' own taxonomy, and the letter does not extend existing custody provisions to assets not already in scope. Products such as BUIDL, BENJI, OUSG and USYC can therefore sit outside the relief while using the same custodians it addresses. This guide sets out where the gap is, how the largest products route around it, and what the dual on-chain and off-chain record actually requires of an adviser.
TL;DR — Key Takeaways
- ✓The Relief: September 2025 no-action letter lets advisers treat state-chartered trust companies as banks for custody of crypto assets and related cash.
- ✓The Gap: Tokenized fund shares are digital securities under the March 2026 release — a different category, and the letter does not extend to assets not already in scope.
- ✓How It Is Handled: BUIDL uses BNY Mellon, a bank satisfying the rule directly. Others route through state trusts where the analysis is less settled.
- ✓The Dual Record: Transfer agent keeps the master securityholder file; the chain is a books-and-records system. Daily reconciliation between them is the operational requirement.
- ✓What Decides a Failure: The UCC §8-102(a)(9)(iii) financial asset election ring-fences holders from custodian creditors. It needs documenting, not assuming.
Relief for One Category, Instruments in Another
The September 2025 no-action letter is the most useful piece of custody relief the digital asset industry has received, and it is written for crypto assets. Tokenized fund shares are classified as digital securities under the March 2026 SEC-CFTC release, which is a different category.
That mismatch is easy to miss because the custodians are the same firms. An allocator reads that state-chartered trust companies now work for crypto custody, observes that their tokenized Treasury fund sits at exactly such a trust company, and concludes the question is settled. The instrument in the letter and the instrument in the account are not the same thing.
The letter “does not state that the current custody provisions would be expanded to include those Crypto Assets not already in scope.”
— Morgan Lewis, on the scope of the September 2025 no-action relief
Relief that does not expand scope cannot be read as covering a category it never named. That is the entire analysis, and it is why the largest products avoid depending on it.
Two Routes to Qualified Custody
Rule 206(4)-2 requires a registered adviser holding client assets to use a qualified custodian, and there are two practical routes. Only one of them needed the no-action letter, which is why product designs diverge on this point.
| Route | Basis | Status for digital securities |
|---|---|---|
| Bank prong | A bank under 12 U.S.C. §24(Seventh) and 12 C.F.R. Part 9 | Satisfied directly — no relief needed |
| State trust company prong | September 2025 no-action relief | Unsettled — the letter addresses crypto assets |
| Privately offered securities exception | Rule 206(4)-2(b)(2) | Contested; not the prevailing practice |
| Self-custody by the adviser | Not a qualified custodian route | Not available for client assets |
Key Insight
BUIDL using BNY Mellon is not an incidental detail about one product. A bank custodian satisfies Rule 206(4)-2 directly under statute, so the entire question of whether crypto-asset relief reaches digital securities never arises for that structure. The largest tokenized fund in the market is built so the unsettled question is irrelevant to it, which is a fairly strong signal about how its sponsors assessed the alternative. Programmes routing through state trust companies are not wrong to do so — but they are relying on an analysis that the market leader designed around.
The Chain Is a Books-and-Records System, Not the Register
Under the January 2026 staff statement, tokenized securities are a recordation modality within the UCC Article 8 indirect holding system. The transfer agent keeps the master securityholder file; the ledger is a books-and-records system that has to agree with it.
That structure creates ongoing operational obligations rather than one-off ones, and they are the obligations most likely to be underestimated when a programme is designed around issuance. Two records that must agree will eventually disagree, and the process for detecting and resolving that is the product.
Wallet ownership validated against registered owners
The transfer agent has to establish that the entity controlling a wallet is the registered owner on the file. A chain proves control of a key; it does not prove who holds the key, and bridging that gap is an off-chain identity process the transfer agent owns.
Daily reconciliation of balances to shareholder records
Token balances and off-chain shareholder records must be reconciled on a daily basis. This is unglamorous operational work, it never stops, and it is where a tokenized fund's administrative cost actually sits over its life.
The financial asset election documented
The election under UCC §8-102(a)(9)(iii) is what ring-fences beneficial owner interests from the custodian's creditors. Documenting that it applies is part of closing an allocation, not a background assumption about how custody works.
Custodian failure analysed in advance
Entitlement priority under Article 8, treatment under Bankruptcy Code Subchapter III, and the absence of SIPC coverage for Regulation D feeders generally require separate written opinions before an allocator commits.
The last item is the one allocators most often defer and least often should. SIPC coverage not applying to a Regulation D feeder is the sort of fact that is obvious in a memo and invisible in a pitch, and it changes the recovery position entirely — the register mechanics are covered in transfer agents and the master securityholder file.
How the Four Largest Products Are Structured
Each splits the transfer agent and custodian roles differently, and the split determines which custody analysis applies. All four use allow-list-only transfer restrictions enforced at the smart contract layer.
| Product | Transfer agent | Custody route |
|---|---|---|
| BUIDL | Securitize — allow-list and daily in-kind yield | BNY Mellon — bank prong, no relief needed |
| BENJI / FOBXX | Franklin Templeton in-house, on Stellar | The token is the share; no certificate layer |
| OUSG | Ankura Trust | State-chartered digital asset trusts per disclosures |
| USYC | Hashnote / Circle administer the fund | State-chartered digital asset trusts |
BENJI is the structurally distinctive one. Where the token is the share and the blockchain replaces the certificate rather than mirroring a separate register, the dual-record reconciliation problem is smaller by construction — there is less to reconcile. That is a design choice with real operational consequences, and it requires the issuer to run transfer agency itself, which most sponsors are unwilling to do.
What an Allocator Should Establish
Which prong of the rule the custody arrangement relies on, and whether that prong was written for this category of instrument. Everything else follows from those two answers.
Settled ground
- Bank custodian under the bank prong
- A transfer agent controlling the allow-list
- Daily reconciliation actually performed
- Segregation and no-lending in the agreement
Unsettled ground
- State trust relief applied to digital securities
- The privately offered securities exception
- SIPC treatment for Reg D feeders
- Entitlement priority in a custodian failure
Ask before allocating
- Which prong does this rely on?
- Is the financial asset election documented?
- Who reconciles, and how often?
- Is there a written custodian-failure opinion?
The middle column is not a warning against these products. It is a list of questions with real answers that simply have not been given by a regulator yet, and an allocator who has obtained written opinions on them is in a materially different position from one who has assumed the September letter settled the matter — the wider framework is covered in SEC custody rule modernization for tokenized assets.
How Blockmaze Fits a Dual-Record Structure
The compliance layer sits where the chain and the official register meet. Its job is to make the two agree by construction rather than by a reconciliation process that discovers disagreements after the fact.
Eligibility Enforced Before Settlement
A transfer to an address outside the permitted set cannot settle, which is what keeps the on-chain holder set identical to the registered owner file rather than merely similar to it.
Holder Identity, Not Just Addresses
Verified holder records attach to the party rather than the wallet, which is the bridge a transfer agent needs between control of a key and ownership on the file.
Custody Chain Recorded
Which custodian holds a position, and on what basis, is a property of the record — so the question of which prong an arrangement relies on is answerable from data.
Reconciliation as a By-Product
Where transfers are only possible between recorded eligible holders, the daily reconciliation becomes a confirmation rather than an investigation.
The fourth point is the practical economics of this structure. Daily reconciliation between a ledger and a register is a permanent operational cost, and the difference between a system where breaks are prevented and one where they are found is the difference between a confirmation run and a team — the integration model described in institutional RWA custody solutions and compliance.
Need the Chain and the Register to Agree?
Blockmaze enforces eligibility before settlement, ties holder identity to the party rather than the wallet, and records the custody basis — so reconciliation confirms rather than investigates.
Frequently Asked Questions
What did the September 2025 no-action letter actually do?
It allowed SEC-registered investment advisers and regulated funds to treat a state-chartered trust company as a bank for custody purposes with respect to crypto assets and related cash or cash equivalents. The staff conditioned that on the adviser having a reasonable basis to believe the trust company is authorised to provide crypto custody, reviewing its audited financials and SOC-1 or SOC-2 reports, holding a custody agreement that prohibits lending or transfer without consent and requires segregation, disclosing material risks, and documenting a best-interest determination.
Why might it not cover a tokenized fund share?
Because the relief is written for crypto assets, and a tokenized fund share is classified as a digital security under the March 2026 SEC-CFTC release. Those are different categories in the agencies' own taxonomy, and the letter does not state that existing custody provisions are expanded to cover assets not already in scope. The result is that products such as BUIDL, BENJI, OUSG and USYC may sit outside the letter's protection while using the very custodians it was written about.
How do the largest products handle this today?
Mostly by not relying on the letter. BUIDL uses BNY Mellon, a bank that satisfies the qualified custodian requirement directly without needing any relief. Others route through state-chartered digital asset trusts — Ondo's disclosures reference BitGo Trust or Coinbase Custody Trust NY — where the analysis is less settled. The prevailing institutional practice is to route allocators to the bank or trust company prongs of Rule 206(4)-2 rather than to argue an exception applies.
What is the dual-record requirement?
That the chain and the official register both exist and must agree. The January 2026 staff statement frames tokenized securities as a recordation modality within the UCC Article 8 indirect holding system: the issuer or transfer agent maintains the master securityholder file while the ledger functions as a books-and-records system. In practice this means transfer agent validation of on-chain wallet ownership against registered-owner files, and daily reconciliation between token balances and off-chain shareholder records.
Why does UCC Article 8 matter for custody?
Because it determines what happens if the custodian fails. The financial asset election under UCC §8-102(a)(9)(iii) is what ring-fences beneficial owner interests from the custodian's own creditors, and documenting that the election applies is part of the custody analysis rather than an afterthought. Custodian-failure questions — entitlement priority under Article 8, Bankruptcy Code Subchapter III treatment, and the absence of SIPC coverage for Regulation D feeders — generally require separate written opinions before an allocation closes.
Does an allow-list satisfy the custody rule?
It supports the analysis without settling it. All four major tokenized Treasury products use allow-list-only transfer restrictions enforced at the smart contract layer, so transfers to non-whitelisted addresses revert and the transfer agent demonstrably controls secondary-market access. That is a genuine control and it addresses Securities Act Section 5 compliance. Whether it lets an adviser rely on the privately offered securities exception in Rule 206(4)-2(b)(2) is contested, which is why most allocators use a qualified custodian anyway.
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