So, there's this:
I've been thinking about a new data project for a while: once in a while someone finds the same address that is posted by different users, and I assume they find those by searching for that one address. How fun would it be to list
all addresses ever posted on Bitcointalk, and add all usernames that posted it to each address on the list?

It'll be a lot of data to process, and I'm a bit afraid the resulting list will be very long with many false positives and many already handled cases. But I'm pretty sure this data will bust a lot of alt accounts

You absolutely should do it.
I now have
2xx200+ GB and 51 million posts ready to search through. I'm only going to do this once, so I want to do it right the first time. I know Bitcoin address formats (although I'll probably ignore the rare Bech32 multisig and taproot addresses), I've seen Ethereum and BSC
(both centrally controlled so I don't like them), but what else is out there to search for? A regex to search for would be even better
