-snip-
Here example of addresses:
1NwUfBG7kKNKjtoTbj8557Ty8MYiGXYupV
1NzGg6KKApR6M5SKSWGjfScsokVZK68yEc
1P2SjcwEJ1hrgWPjdFRfNiDvEpq6DJ8S8A
1P5JGtjq65L7mcW5B2ESHe8RCqQfW5KNE6
1P5QtTVmTYyPwqGU8BHJxQyndbgQ3gFzK1
They all starts from 1, am I right that it’s btc?
Addresses are just derived from the private keys that were stored in the wallet.dat and if you load it to Bitcoin Core, those will be derived as bitcoin addresses no matter the compatible source wallet is.
However, there are transactions in the history shown in bitcoin blockexplorers.
Though most of them are "
null" and can't be OP_Return, there is indeed a "
history".
Good, there's high a chance that it's a Bitcoin Core wallet.dat