Metaplex, the protocol famously known for building the token standard for Solana NFTs, has launched MPL-3643, a tokenization standard designed to bring permissioned real-world assets and tokenized securities directly onto Solana.
The standard addresses a core challenge in bringing regulated financial assets onchain: putting an asset on a blockchain doesn't mean everyone should be able to buy, hold, or transfer it.
MPL-3643 gives issuers tools to encode those restrictions directly into tokens while using Solana’s sub-second finality, high throughput, and low fees.
Automated Rules for Asset Transfers
MPL-3643 lets issuers configure investor eligibility, transfer restrictions, jurisdiction limits, and lockup periods at the token level.
Before an asset changes hands, the system can check whether the receiving wallet meets the issuer’s requirements. For example, an issuer could restrict an asset to verified investors in specific jurisdictions or prevent transfers until a lockup expires.
That creates a different experience from ordinary permissionless tokens. Owning a Solana wallet would not automatically give someone access to every asset issued under MPL-3643. Eligibility would determine whether the wallet can receive or transfer a particular investment.
Metaplex built the standard on core Solana infrastructure, including Token-2022, sRFC 37, and the Solana Attestation Service. The company describes MPL-3643 as “bringing ERC-3643-equivalent functionality to Solana.”
“To bring financial markets onchain, we need compliance infrastructure without sacrificing Solana’s composability or promise of open markets. MPL-3643 provides that foundation, enabling existing public-market assets to fully move onchain while also unlocking new ways for private markets to reach global investors.” - Stephen Hess, founder of Metaplex.
One Verification Can Work Across Multiple Assets
MPL-3643 also introduces reusable investor verification. Metaplex says the standard can integrate with trusted identity providers and the Solana Attestation Service, allowing investors to reuse verification across different issuers that support the standard.
That could reduce the need to submit the same information repeatedly when accessing different financial products. However, reusable verification does not create universal eligibility. Each issuer can set its own requirements, meaning verification for 1 asset would not automatically qualify an investor for another.
The distinction matters because MPL-3643 aims to make compliance checks more portable while preserving the restrictions attached to each investment.
Metaplex plans to integrate MPL-3643 with Orca, Raydium, Solflare, Jupiter and Phantom at launch. The integrations could connect permissioned assets with trading venues and wallets that Solana users already know.
The standard currently remains in limited-access alpha.
Another Step in Metaplex’s Expansion
MPL-3643 arrives shortly after Metaplex launched Vantage, its customizable Solana trading terminal.
That product pushed Metaplex further toward the user-facing side of the market, giving traders tools to customize dashboards for charts, market data, order entry, and portfolio tracking.
The sequence shows a broader expansion from asset infrastructure toward asset discovery and trading. Genesis already gives teams infrastructure for token launches through Launch Pools, Auctions, and Presales, while Vantage targets the research and trading experience.
MPL-3643 adds another layer by addressing how regulated assets can enter the ecosystem and move between eligible participants.
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