Someone can send you bitcoin without asking you, and it can be a fortune. It raises another concern, that if it is a mistaken sending, will you keep it or return it to the sender in such case, it depends on you.
I don’t know about promise444c5 but imo depends on the reason it was sent.I expect such person to initiate another transaction utilizing script like
nulldata script (OP_RETURN) stating whatever was the reason for sending such fortune to my address(either it’s a mistake or not).
I know someone might ask what if the person doesn’t know how? The thing is losing such fortune will force you to find a alternative toward reaching out to such address,without an attempt.it could have a lot of meaning to the receiver
In the beginners section, this post will probably be useful.
For more experienced users, this is unlikely to be new, because anyone who has experience handling money (usually electronic) knows about the need to make sure that the recipient's data is filled in correctly.
Everyone is not above mistake, sometimes mistakes are bound to happen even to the experience users just that the possibility is low compared to a non experience users