Metaplex announced MPL-3643 on September 28, 2026, ahead of Korea Blockchain Week. The standard targets permissioned real-world assets and tokenized securities. It gives issuers a way to embed eligibility and transfer rules directly into a token. As a result, compliance no longer lives solely in a separate database or legal agreement. Metaplex framed the launch around a specific gap. Bringing new markets onchain requires infrastructure that supports issuer-sponsored tokenization. That means the company or fund behind an asset can issue and control the token directly. Metaplex already serves as Solana’s dominant tokenization layer, having minted the vast majority of tokens and NFTs on the network since 2021. MPL-3643 extends that role into regulated finance. The standard currently sits in limited-access alpha. Metaplex has not yet named a first issuer.
Bringing new markets onchain requires compliance infrastructure that supports issuer-sponsored tokenization.
— Metaplex (@metaplex) September 29, 2026
Today, we're thrilled to introduce MPL-3643: a new standard for permissioned real-world assets and tokenized securities on @solana. pic.twitter.com/ozlQaxxHIi
What Issuer-Sponsored Tokenization Actually Means
Issuer-sponsored tokenization shifts control back to the entity responsible for an asset. Instead of a permissionless token that anyone can hold, the issuer sets the rules upfront. They decide which investors qualify, which jurisdictions are permitted, and how long a lockup lasts. They can also restrict secondary transfers or require ongoing eligibility checks. This model fits securities, private credit, funds, and real estate interests. Those assets carry legal obligations that ordinary crypto tokens do not. Notably, MPL-3643 does not make an asset legally compliant on its own. The standard provides technical enforcement. Legal compliance still depends on the issuer, the offering structure, and the regulators involved.
3/ MPL-3643 helps unlock these markets by enabling permissioned assets to be issued directly on Solana, rather than relying on wrapped models.
— Metaplex (@metaplex) September 29, 2026
Issuer-configurable compliance and life-cycle functionality is embedded directly into the asset, including transfer restrictions, lockup…
Inside the Technical Stack
MPL-3643 does not introduce a new blockchain or wallet system. Instead, Metaplex built it from three existing pieces of Solana infrastructure. The first is Token-2022, Solana’s extended token program that supports programmable transfer logic. The second is the Solana Attestation Service, which verifies investor attributes like identity or eligibility. Importantly, an attestation confirms a result without exposing the underlying personal documents onchain. The third component is sRFC 37, part of Solana’s broader standards infrastructure. Together, these pieces let a transfer check run before it settles. The system confirms the sender, recipient, jurisdiction, and holding period all satisfy the issuer’s rules. If any condition fails, the transfer gets rejected. Identity verification can also be reused across multiple offerings, so investors avoid repeating the same checks for every issuer.
How MPL-3643 Compares to ERC-3643
MPL-3643 is explicitly modeled on ERC-3643, Ethereum’s permissioned token standard. ERC-3643 originated as the T-REX protocol, built by Tokeny to enforce compliance through onchain identity and verifiable credentials. The standard reached “Final” status in the Ethereum Improvement Proposal process, a significant milestone for the ERC3643 Association. Today, more than $28 billion in assets have been tokenized through ERC-3643, according to Tokeny’s own figures. Both standards share the same core goal. They let regulated assets exist as blockchain tokens while preserving issuer control over holders and transfers. However, the architecture differs. ERC-3643 relies on a coordinated set of smart contracts, including separate identity registries, claim registries, and compliance contracts. MPL-3643 instead builds on Solana’s native Token-2022 extensions and the Attestation Service. This gives Solana a comparable compliance framework without replicating Ethereum’s contract-heavy design.
5/ As global regulators continue to explore frameworks for bringing real-world assets onchain, including new issuer-sponsored models, Metaplex is enabling new onchain markets on Solana.
— Metaplex (@metaplex) September 29, 2026
MPL-3643 is infrastructure for the next wave: bringing existing public markets fully onchain,…
Why Timing Matters for the RWA Market
Metaplex launched MPL-3643 as real-world asset tokenization accelerates industry-wide. According to CoinGecko’s 2026 RWA Report, tokenized RWA market capitalization grew 256.7% in fifteen months. It rose from $5.42 billion in January 2025 to $19.32 billion by March 2026. Separately, rwa.io’s State of RWA Tokenization report put the broader tokenized asset market at $36.27 billion as of November 2025. That figure reflects input from Coinbase, Franklin Templeton, Chainlink Labs, and Ondo Finance. Against that backdrop, Solana has lacked a native standard for compliant securities issuance. Ethereum-based platforms captured much of the early institutional volume through ERC-3643. MPL-3643 gives Solana issuers a comparable path, without forcing them onto a different chain.
What Comes Next
Metaplex has flagged planned integrations with Solana trading venues, including Orca and Raydium. Reporting from Solana Compass also points to planned support from Jupiter. These integrations would let permissioned tokens trade inside Solana’s existing DeFi applications. That matters because it avoids building a separate, isolated marketplace for compliant assets. Still, the standard remains unproven in production. No confirmed issuer has launched a live MPL-3643 asset yet. The exact governance behind freeze and recovery functions also remains undocumented publicly. Those functions let an authorized administrator freeze a wallet or recover restricted holdings. They carry real weight for investor protection and will need clear rules before institutions commit capital. As Metaplex moves MPL-3643 out of alpha, those details will determine how quickly issuers adopt it.
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