[Solana Developers Propose Deprecating Persistent Nonce Transaction Functionality] According to a report by CoinDesk on November 9th, as reported by DeepFlow TechFlow, Solana developers have proposed deprecating persistent nonce transaction functionality. This mechanism was used in the April attack on the Drift trading protocol, resulting in losses of at least $270 million. The proposal still requires technical approval and is expected to take effect on the mainnet no earlier than May 5, 2027. Persistent nonces allow signed transactions to remain valid indefinitely, enabling custodians and exchanges to perform offline signing. The report points out that relevant institutions will need to migrate to alternative solutions; the Solana Foundation's migration requirements may delay the final deadline.