Metaplex introduced MPL-3643 on September 29, 2026, as a Solana standard for permissioned real-world assets and tokenized securities. Designed to support issuer-led compliance and access controls, it lets issuers encode investor eligibility, jurisdiction, lockup and transfer restrictions directly into tokens while using Solana’s high throughput, sub-second finality and low fees. The framework combines Token-2022, Solana Attestation Service and sRFC 37, which can freeze new token accounts until issuer-defined access conditions are met. Reusable investor verifications can work across participating issuers, but each asset retains its own eligibility requirements. Planned launch integrations include Orca, Raydium, Jupiter, Phantom and Solflare, although MPL-3643 remains in limited-access alpha and no first issuer has been named. According to CoinMarketCap, MPLX was recently trading at $0.05617, up 4.91%.