I took some time to look into Coinbase’s latest strategy, shared by Brian Armstrong, for defending against quantum computer attacks and strengthening Bitcoin’s security. In short, it involves migrating to quantum-resistant addresses in five phases, while applying separate rules to $BTC , which have been dormant for a long time or may be lost. This is pretty much the same as the views Sun expressed in his latest interview, which I shared a few days ago. Of course, most people in the industry probably share this view. But cryptographic upgrades have never been just a developer issue: ultimately, exchanges, wallets, custodians, and ordinary users all have to put them into practice. The difficulty is that the community still can’t reach consensus on key questions, such as how to migrate old addresses, what to do with coins that have been untouched for a long time, whether users must take action themselves, and whether new signature schemes can work with existing wallets.

If the rules are too aggressive, they could undermine holders’ expectations of their property rights;
if they’re too conservative, they could leave long-term security vulnerabilities in place.

In A Jian’s view, the most valuable thing ordinary people can do right now isn’t to switch addresses immediately or chase a particular crypto narrative. It’s to make sure they’re using a mainstream wallet, keep their recovery information safe, and watch for official migration announcements in the future, following the security upgrades rolled out by mainstream wallets and exchanges.