I have a friend who I'm assisting with this... they have a balance of 50,000 DOGE on an old exchange they purchased in 2018, but they can't remember which exchange it was.
I've ran through about 20 different exchanges using 'forgot password' to see if anything comes up, but no luck with that so far.
What I was able to find though is this exchange address which is where the BTC was sent in exchange for the DOGE:
1EEqRvnS7XqMoXDcaGL7bLS3hzZi1qUZm1
this is the transaction hash transfer that took place during the swap:
https://blockchair.com/bitcoin/transaction/cf094e0b04a3034b41b552f6d577154a82e3402257c928ea0d839191ad565c99and this is their personal address that sits on the exchange:
https://blockchair.com/bitcoin/address/3BViGbeJaEYw9AUWY9CCYNCGX9QmPVpLBTThere are only two transactions for that user address. One sending BTC to the account on January 13th, 2018. And another transation on February 5th, 2018 which is presumably the swap from BTC to DOGE.
Aside from enterprise services like Chainalysis, is there any tooling available for individuals like myself just looking to cross-reference this address with the exchange it might belong to?