Bitcoin addresses contain a built-in check code,
so it's generally not possible to send Bitcoins to a mistyped address.
However, if the address is well-formed but no one owns it
(or the owner lost their wallet.dat),
any coins sent to that address will be lost forever.

未登録のアドレスでもチェックが通っちゃうと遅れちゃうんだな
未登録だから受取人いなくて永久にロストしちゃうって
アドレスは手打ちじゃなく常にコピペしよう