Solana developers propose deprecating the persistent nonce transaction feature

Solana developers have submitted a proposal to remove the persistent nonce transaction feature—a mechanism exploited during the April attack on the Drift trading protocol, which resulted in at least $270 million in losses. The proposal is currently undergoing technical review; if approved, it would go live on mainnet as early as May 5, 2027. Persistent nonces allow signed transactions to remain valid indefinitely and are commonly used by custodians and exchanges for offline signing workflows. With this feature’s deprecation, such entities will need to adopt alternative solutions. As the Solana Foundation is expected to issue migration requirements, the actual implementation timeline may be delayed.