with your electrum wallet?
how can I find out which of my electrum addresses stored btc 1 year ago?
I need to claim all my fork coins but can only manually transfer one private key into bither
at a time....with over 200 deposit addresses this will take me hours to complete.
how can I find my electrum deposit address which held btc at time x ?
I wrote a tool to do exactly this a while ago:
https://github.com/mocacinno/mocacinnoforkchecker/It hasn't been maintained since the 7th of may, so some api's might have gone down/new forks might have been added, but the tool should still provide you with unclaimed unspent outputs on many forked chains

Good luck!