According to CoinMeta, the Solana Foundation has released an open-source settlement pair payment (DVP) custody program (Solana DVP), which is licensed under the MIT license. It is available for banks, custodians, exchanges, and other settlement agents to use for atomic settlements on Solana, achieving second-level finality. This program supports the SPL and Token-2022 standards and has passed external security audits. J.P provided feedback regarding settlement practices.