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OpenZeppelin and T-REX Network Rebuild ONCHAINID as a Smart Account for Regulated Assets
- September 29, 2026
OpenZeppelin
As part of a broader partnership to advance compliance infrastructure for tokenized finance, T-REX Network and OpenZeppelin have updated ONCHAINID to V3, which keeps its registry of verified claims and adds the capabilities of a modular smart account.
For financial institutions and asset issuers, it simplifies how investors interact with regulated tokens: a single identity can hold assets, execute transactions, and manage recovery in one compliant flow.
Why make identity programmable?
ONCHAINID V3 widens what issuers and wallets can do. Keys, claims, and execution are now handled through installable modules rather than a single contract, so each can be added, reviewed, and changed on its own.
- Flexible Signature Checking: Through ERC-7913, an identity can be controlled by secp256r1, RSA, or WebAuthn credentials alongside standard ECDSA, closer to how people and institutions already authenticate.
- Modular social recovery: Recovery becomes an installable module with guardian and threshold mechanics, rather than relying on an issuer to re-link a new wallet.
- Crosschain identity: One identity can be verified across chains instead of re-established on each.
- An account, not just a record: Because the identity is itself an account, it can hold assets and interact with the ecosystem directly.
- Composable compliance: Rules stay composable and under issuer control, able to evolve without the identity being rebuilt around them.
OnchainID V3 brings two permission models together in one account: ERC-734, the key-management standard, where each key has a purpose that defines its authority (for example, a management or action key), and ERC-7579, which defines how a transaction is validated and executed.
A record only has to be read correctly, while an account has to decide what each key may do and stay consistent across every path a call can take. OpenZeppelin audited the redesign, including how the two permission models interact.
A compliance foundation for tokenized finance
ONCHAINID v3 is one part of ongoing work between T-REX Network and OpenZeppelin on the ERC-3643 compliance standard. Alongside bringing ERC-3643 into the OpenZeppelin Contracts library as an audited component, that work extends compliance to more networks, including native non-EVM support on Stellar.
The roadmap also targets confidentiality through Zama's fully homomorphic encryption, so regulatory checks run on encrypted data without exposing identities or amounts.
Access the full audit report and read the ONCHAINID documentation to get started.
