Solana’s offline-signing proposal would keep approvals valid after failed transactions

What happened

Proposed signer programs would preserve offline approval while requiring affected operators to reassess account authorities, application access and custody controls. Solana’s plan to retire durable nonces, which let transactions be signed offline and broadcast later, would preserve cold-key approval while changing which addresses control the affected assets.

For exchanges, custodians and treasury operators using that signing method, the proposed replacement adds a program between the cold key’s approval and execution. The Solana Foundation’s October deprecation plan points to onchain signer programs that verify an offline signature and execute its approved instructions.

A program-derived address, or PDA, would control the affected accounts. The original key would still authorize actions, while a separate online operator submits them and pays the network fee.