The cryptography advisory committee convened by Coinbase believes that quantum computers currently do not pose an immediate threat to blockchain, but the Bitcoin community should begin planning for post-quantum signature migration. Reports indicate that approximately 6.7 million BTC may face future quantum attack risks, with about 1.7 million of those located at early addresses, many of which are believed to be associated with Satoshi Nakamoto or lost private keys. The current controversy centers on whether assets at vulnerable addresses that have not migrated to quantum-resistant signatures should be frozen or restricted in the future. However, the committee refused to choose a single optimal solution, stating that such issues should be decided by the Bitcoin community, but preparations for the technical migration to post-quantum signatures should begin as early as possible. (CoinDesk)