Like the title says what are the rules. If I miraculously got a private key to a wallet that had Bitcoin in it but was not mine originally then does that mean I now own the wallet like finders keepers and is there any legality issues with this in the usa,uk,canada,south america. Is this more of a morality should you or should you not.
I really don't see the possibilities of how you can miraculously get another person's wallet and private keys without that person gifting it to you, unless the original owner misplaced the list where they wrote it or you stole it. The former is acceptable, so far it's a gift, but the two latter that I mentioned is criminality, that's how I see it, unless you can enlighten us with the details of how you miraculously got it. But frankly I don't know the extent of criminality it'll be if my second option being when the owner misplaced it, and another person finds it, without knowing who own it? Unless the Bitcoin is in a centralized exchange, where KYC can determine the original owner, if there's no other means of determining who the owner is, the I guess the finder can keep it, but I don't know about selling it.