Solana developers have proposed removing durable nonce transactions, a feature that allows signed transactions to remain valid for an extended period and supports offline signing by custodians and exchanges.
The proposal still requires technical approval. According to CoinDesk reporting cited by TechFlow on November 9, 2026, it could take effect on mainnet no earlier than May 5, 2027.
Custodians and exchanges would need alternatives
Institutions using durable nonces for offline signing would need to migrate to alternative arrangements, the report said. Migration requirements from the Solana Foundation could push back the implementation deadline. The supplied report does not specify the replacement mechanisms.
The report linked the proposal to the April attack on trading protocol Drift, in which the durable nonce mechanism was used and losses reached at least $270 million. It did not establish that the feature alone caused the losses.
Original publication: November 9, 2026, at 14:57:32 (UTC+8).
Source: TechFlow, citing CoinDesk.