Solana Developers Propose Removing the Persistent Nonce Transaction Feature

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Solana developers have proposed removing the persistent nonce transaction feature, a mechanism linked to the Proof of History (PoH) and Proof of Stake (PoS) security models. This feature was exploited in the April attack on Drift, resulting in over $270 million in losses. The change requires technical approval and may be activated on May 5, 2027. Persistent nonces allow signed transactions to remain valid for extended periods, commonly used by custodians and exchanges for offline signing. Institutions must transition to new methods, and migration guidelines from the Solana Foundation could delay the timeline.

ChainCatcher report, according to CoinDesk, Solana developers have proposed deprecating the persistent nonce transaction feature, a mechanism previously exploited in the April attack on the trading protocol Drift, resulting in losses of at least $270 million. The proposal still requires technical review and could take effect on mainnet no earlier than May 5, 2027. Persistent nonces allow signed transactions to remain valid indefinitely, enabling custodians and exchanges to perform offline signing. Affected institutions will need to migrate to alternative solutions, and Solana Foundation’s migration requirements may delay the final deadline.

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