[realharo]

In practice, what you really need is consensus. As long as enough of the important participants agree, that's how it will be.

And since there are millions of identical copies of the entire pre-attack ledger out there, this should not be that difficult.

Potential future buyers might reevaluate whether this whole thing has any monetary value, but that's a separate concern. Bitcoin's market value was never about the technical details.

[rcbdev]

I'm not sure you fully grasped what was said in the parent comment. It literally does not matter anymore if we can all agree on the previous blocks, it would be impossible to identify who owns which wallet anymore. The seed phrase would be useless.

[realharo]

Ah, then yeah, in that case, it'd be basically over.

Maybe large exchanges would try to step in to make a fresh chain based on their combined account data, and just drop the people relying on self-custody. But I doubt the market would go for it - the uncertainty would crash it hard enough that it would never recover.