Project Eleven Prototype to Prove Bitcoin Ownership Post-Quantum
Project Eleven has presented a prototype that would allow Bitcoin owners to prove ownership after quantum computers become capable of forging digital signatures. The mechanism is not yet live on the Bitcoin network, has not undergone audits, and would require a protocol change.
Project Eleven, co-founded by Alex Pruden, has unveiled a prototype aimed at helping Bitcoin holders prove ownership of their coins after the arrival of quantum computers — a scenario dubbed "Q-day". According to Pruden, after Q-day, "a valid signature no longer proves ownership."
The proposed solution allows a user to demonstrate a link between their address and an earlier wallet key, enabling them to transfer funds to a post-quantum address. However, the mechanism is not yet operational on Bitcoin's mainnet, has not been audited, and would require a change to the protocol rules to be implemented.
Additionally, the prototype cannot recover assets that have already been stolen. The development signals ongoing efforts to future-proof Bitcoin against quantum threats, but practical deployment remains distant.
Source: ForkLog