Hello, please I need some assistance. In 2016, we used python to generate a Bitcoin private key and then imported the key into the electrum Android app, sent btc there and forgot about it. Now, for the past one year, I have been trying to recover that address but the private key doesn’t generate the same address anymore. I have used python to generate 5 different legacy addresses but all are different from the very first one.

I am very sure it’s the right key because there are multiple backups. Is it possible that the address format is no longer supported and hence difficult to recreate with modern tools? Does anyone have any insight into this and what may be the possible problem???


To reiterate, the addresses are legacy addresses and the key I have is presumably a compressed key starting with L.

Is it possible that electrum android app uses a different architecture to generate a public address now or it had a bug that generated a wrong address for then?