SEC Proposes Blockchain as the Official Record for Securities
On 1 September 2026 the SEC proposed the first substantive modernisation of its transfer agent rules since they were adopted in the late 1970s and early 1980s, under Release No. 34-106246. Transfer agents keep the official register of who owns a security. The proposal would permit, but not require, a blockchain to serve as all or part of that master securityholder file, which would let a token's on-chain record be the legal ownership record rather than a mirror of one. The conditions matter as much as the headline. According to Jones Day's analysis, the transfer agent must keep exclusive control of the master file and hold personal identifying information off-chain. A proposed Rule 17ad-31 would require transfer agents to avoid facilitating transfers unless they have a reasonable basis to believe the transaction does not violate the registration requirements of the Securities Act, which makes them gatekeepers rather than passive record-keepers. The proposal was published in the Federal Register on 4 September 2026, and public comments are due by 3 November 2026. It is a proposal, not a final rule.
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What the SEC actually proposed
On 1 September 2026 the Securities and Exchange Commission proposed to modernise the rules for registered transfer agents, under Release No. 34-106246. The SEC describes these rules as not substantively updated since they were first adopted in the late 1970s and early 1980s.
The proposal is broad. According to Gibson Dunn's summary, it spans registration, reporting, processing, recordkeeping, safeguarding, compliance and restrictive legends. Most of it is operational modernisation. One part of it could change what a tokenized security legally is.
Chairman Paul S. Atkins said the proposal "would streamline and modernize the Commission's rules to reflect transfer agents' current processes and operations, including the use of electronic communications and blockchain technology in connection with securities offerings and the transfer of shares."
The release was published in the Federal Register on 4 September 2026, and comments are due by 3 November 2026.
Why the register is the whole story
A transfer agent keeps the official record of who owns a security and processes changes of ownership. That record, the master securityholder file, is what matters legally when ownership is disputed.
Most tokenized securities today sit on top of that arrangement. A token on a public chain typically represents an entry in a register held somewhere else, and the token is only as good as its link to that off-chain record. If the two disagree, the register wins.
That is why this proposal matters more than its operational framing suggests. If a blockchain can be the register, the on-chain record stops being a mirror of ownership and becomes the ownership record.
How can a blockchain become the official record?
The proposal would permit a transfer agent to use a blockchain as the master securityholder file, or as one component of it. According to Jones Day's analysis, the SEC is explicitly contemplating a distributed ledger forming part, or potentially all, of the file maintained by a regulated transfer agent.
Two words in that description carry the weight: permit and regulated. Nothing would require a transfer agent to use a blockchain, and nothing would remove the transfer agent from the picture. The proposal accommodates on-chain records inside the existing framework rather than creating an alternative to it.
The conditions that keep it permissioned
The headline reads like decentralisation. The conditions read the other way.
Per Jones Day, the transfer agent must retain exclusive control over the master securityholder file at all times. Personal identifying information would be kept in off-chain systems, with position data recorded on-chain. And the safeguarding rule, 17ad-12, would be amended to require policies addressing cybersecurity and operational risks, including those specific to blockchain-based systems.
Put together, the model is a public ledger used as a regulated register: positions visible on-chain, identities held privately, and a single accountable firm in control. That is a meaningful legal upgrade for tokenized securities. It is not permissionless finance, and reading it as such would be a mistake.
Rule 17ad-31: transfer agents become gatekeepers
The part of the proposal with the widest consequences for capital markets is not about blockchains at all.
Proposed Rule 17ad-31 addresses restrictive legends. As Jones Day describes it, transfer agents would need to refrain from facilitating a transaction in unregistered securities unless they have a reasonable basis to believe the transaction does not violate Section 5(a) of the Securities Act. Gibson Dunn flags the new restrictive legend requirements as having significant implications for capital markets transactions.
For tokenized securities, this cuts against the idea of freely moving tokens. If the transfer agent controls the register and must screen transfers for compliance, then a token moving between wallets is subject to that screening. Anyone building transfer restrictions into tokens is already designing for this world. Our guide to tokenized asset custody covers the regulated intermediaries on the other side of that screen.
The proposal also adds Rule 17ad-30, requiring written policies and procedures for compliance with the federal securities laws.
What it would change, and what it would not
For issuers of tokenized funds and securities, the proposal offers something they have wanted: a clear path to treating the on-chain record as authoritative. That reduces the reconciliation risk between a token and an off-chain register, which is one of the least discussed weaknesses in the category.
It would not change who can buy these products. Eligibility rules for private funds and registered funds sit elsewhere in securities law, which is why many tokenized treasury funds remain limited to accredited investors or qualified purchasers. Our guide to buying tokenized treasuries walks through those access rules fund by fund.
Nor would it resolve cross-border questions. A US transfer agent rule does not settle how other jurisdictions treat the same token, a problem our guide to cross-border RWA compliance sets out.
What happens next?
The proposal enters a public comment period that closes on 3 November 2026. The SEC then reviews the comments and decides whether to adopt final rules, which can differ materially from what was proposed.
Commissioners can issue individual statements on proposals, and Commissioner Uyeda published one on this release. Anyone can submit a comment through the SEC's rulemaking page for the proposal, including issuers, investors, technology providers and members of the public.
This proposal also sits alongside legislative efforts on digital asset market structure. Our CLARITY Act explainer covers the bill that would set out which regulator oversees which assets. The two are separate: one is agency rulemaking about recordkeeping, the other is Congress deciding jurisdiction.
Conclusion
The SEC's transfer agent proposal could quietly become one of the most important developments for tokenized securities this year. It would let a blockchain be the legal record of ownership, which closes a gap that has sat under the whole category.
It does that on the regulator's terms. A transfer agent keeps exclusive control, identities stay off-chain, and new gatekeeping duties apply to transfers. The result would be tokenized securities that are more legally solid and firmly permissioned. If you have a view on whether those conditions are right, the window to say so closes on 3 November.
This analysis is built from the SEC's press release and proposed rule, the Federal Register publication of 4 September 2026, and published analyses by Jones Day and Gibson Dunn, all read on 15 September 2026 and linked inline. Details of specific rule provisions are attributed to those analyses where we relied on them. We have not characterised any commissioner's position. This is a proposed rule and not legal advice.
Key Takeaways
- The SEC proposed modernising its transfer agent rules on 1 September 2026 under Release No. 34-106246, the first substantive update since those rules were adopted in the late 1970s and early 1980s.
- The proposal would permit, not mandate, a blockchain to form all or part of the master securityholder file, the legal record of who owns a security.
- Blockchain recordkeeping comes with conditions: the transfer agent keeps exclusive control of the master file, and personal identifying information stays off-chain.
- Proposed Rule 17ad-31 would require transfer agents to have a reasonable basis to believe a transfer does not violate Section 5 of the Securities Act before facilitating it, turning them into gatekeepers.
- The proposal also adds a compliance policies rule, 17ad-30, and amends the safeguarding rule, 17ad-12, to address cybersecurity and operational risk, including for blockchain-based systems.
- Comments are due by 3 November 2026 following Federal Register publication on 4 September. Nothing changes until the SEC adopts a final rule, which may differ from the proposal.
- The practical effect is to bring on-chain ownership inside the existing regulated framework, not outside it. Tokenized securities would become more legally solid and remain decidedly permissioned.
Frequently Asked Questions
What did the SEC propose about blockchains?
The SEC proposed updating its transfer agent rules so that a blockchain could form all or part of the master securityholder file, the official record of who owns a security. The change is permissive, not mandatory, and comes with conditions, including that the registered transfer agent keeps exclusive control of that file.
What is a transfer agent?
A transfer agent is a registered firm that maintains the official record of a security's owners and processes changes of ownership. For many tokenized funds, the token is a representation of an entry in that record. Under the proposal, the blockchain itself could serve as the record, still maintained by a transfer agent.
Does this make tokenized securities permissionless?
No, and arguably the reverse. The transfer agent must keep exclusive control of the master file, personal data stays off-chain, and proposed Rule 17ad-31 would require transfer agents to screen transfers for Securities Act compliance. On-chain ownership records would become legally stronger while remaining controlled by a regulated intermediary.
When is the comment deadline?
The proposal was published in the Federal Register on 4 September 2026, and comments must be received on or before 3 November 2026. Comments can be submitted through the SEC's rulemaking page for the proposal. Anyone can comment, including issuers, investors, technology providers and members of the public.
Is this rule in effect now?
No. It is a proposed rule. The SEC must review public comments and vote on a final version, which can differ materially from the proposal. Until then the existing transfer agent rules apply, and firms should not treat the proposed conditions as settled requirements.
About the Author
David Kim
News & Analysis Editorial Desk
News & Analysis Editorial Desk · Web3AIBlog
David Kim is a pen name for our news and analysis editorial desk. Posts under this byline are written and reviewed by contributors covering emerging-technology policy, regulatory action, market events, and incident reporting across crypto and AI. The desk emphasizes primary-source reporting (court filings, regulatory text, on-chain data, official postmortems) over reaction-cycle commentary. Every news post links to the underlying source documents so readers can verify the facts.
