Metaplex has rolled out MPL-3643, a Solana token standard built for regulated real-world assets and tokenized securities. The key change is simple: compliance rules now sit inside the token standard itself. So an issuer can set who is allowed to hold or transfer the asset, add lockup periods, or block transfers into restricted jurisdictions, and those rules are enforced on-chain.
In practice, that means a token can reject a transfer that would violate its ownership or jurisdiction requirements, instead of relying on separate legal checks or custom code for each deal. The framework uses Solana’s existing compliance tools, but the broader point is the standardization: regulated issuers now have a reusable template for permissioned tokens on a public chain.
That matters because it turns compliance from a bespoke integration into default token infrastructure.