**[Project Eleven Launches Bitcoin Q-Day Post-Wallet Ownership Proof Solution]** Odaily Planet Daily News: Security company Project Eleven has introduced a post-quantum proof technology aimed at helping users prove Bitcoin wallet ownership after quantum computers can derive private keys and generate valid signatures. Project Eleven CEO Alex Pruden stated that the technology uses wallet key derivation paths, enabling users to prove their control without disclosing the parent key, thereby distinguishing legitimate owners from attackers. The solution was developed in collaboration with Jim Posen, the primary maintainer of the open-source Binius zero-knowledge proof system, and is based on the "signature amplification" technology proposed by Alon Sattath and Robert Wyborski. Project Eleven noted that the prototype has not yet undergone auditing and requires blockchain protocol support before deployment. It is primarily targeted at users who may miss migrating to quantum-resistant addresses in the future.