Anza’s Plan to Kill Solana’s Durable Nonces Puts Custodians on a Six-Month Clock

Anza has drafted a plan to remove Solana's durable nonce feature, which lets a transaction be signed now and broadcast much later. Drift says the feature was central to its $295.7 million exploit, and the draft bars activation before May 5, 2027, giving custodians roughly a six-month window to adapt. Traders holding SOL should watch how custodians and large holders migrate away from the feature, since a forced change in signing workflows can affect settlement risk and confidence in Solana infrastructure.