Adam Back advocates for Bitcoin to promptly advance optional post-quantum upgrades and opposes pre-emptively freezing vulnerable addresses.

According to CoinDesk, Adam Back, CEO of Blockstream, stated at Paris Blockchain Week that Bitcoin developers should move forward early with optional post-quantum upgrades—even though practical quantum computers remain far from realization. He noted that Taproot’s flexible design supports integrating new post-quantum signature schemes without affecting existing users. Previously, Jameson Lopp and others proposed BIP-361, aiming to phase out quantum-vulnerable addresses over five years and freeze bitcoins in addresses that fail to complete the migration. Adam Back believes the Bitcoin community can rapidly coordinate a response in an emergency—without needing to predefine freezing arrangements.