In recent days, traditional media has been speculating about quantum computers cracking Bitcoin. There's no need to worry excessively. Firstly, if quantum computing comes, it does pose a direct threat to ECDSA elliptic curves. However, not only Bitcoin and all blockchain networks are directly threatened, but various passwords in the traditional world are also under direct threat. Therefore, before that day arrives, you will see a huge amount of discussion instead of sporadic ones. At the same time, Bitcoin is not unprepared, there are now some reserve anti quantum algorithms. If the singularity were to occur on that day, Bitcoin would be prepared in advance with the latest anti quantum encryption algorithm, so that even living Bitcoin would not be cracked and could be migrated to a new address. The only thing to worry about is the dormant Bitcoin, such as the over one million coins belonging to Satoshi Nakamoto, the Bitcoin of those who unfortunately passed away. If these people cannot upgrade their addresses, they will become a huge bounty for the first person to complete quantum computing.