Coinbase report: Millions of bitcoin vulnerable to quantum attack

Coinbase's Independent Advisory Board on Quantum Computing and Blockchain has released a report indicating that approximately 7 million bitcoin may be vulnerable to future quantum computing attacks. A significant portion of this exposure, around 5 million bitcoin, is linked to address reuse, with a notable amount belonging to active users and large cold wallets held by exchanges. The board highlighted this as a governance challenge, presenting various potential solutions like freezing or burning vulnerable coins, or preserving owner rights, without endorsing a specific path. They strongly urged the Bitcoin community to commence technical migration efforts immediately and to communicate their strategies transparently.