>I still don't get how those 1000 posts tallied with previous UUID would get correlated with the new UUID.
The point is that you can flag accounts/uuids based on monthly attestation count alone, without correlating all the posts to a given account/uuid.
Yes, but isn't there an unplugged hole in the account creation (or fresh install) if that gets you a new UUID with 0 monthly attestation count?
You buy a new phone, install the app, and get an uuid with 0 attestation count. Now what? If you try to use that uuid to farm attestations, it'll be easily linked to that uuid. If you try to uninstall/reinstall, the attestation count will count up, eventually making making the newly created uuids immediately suspicious. You might try to create one uuid per month and then try to farm those indefinitely, but they could require you to reattest every month, which should come back with 0-1 attestations, but if you were farming uuids that'll be immediately caught.
I guess I just misunderstand what is being attested. Is the attestation proving that your randomly assigned UUID belongs to a human, or conversely, does a proof of work simply prove that your device "owns" some UUID?