Hi Mr_P, When sending Bitcoin user to user via the main site you should always send it to a username, not to the person's deposit address. Sending to the person's username will ensure that the Bitcoin are received immediately. As you sent them to his deposit address, it is likely that what you're seeing is the tumbler in action. If they are not received within 24 hours feel free to message SR Support letting them know what has happened. Thread locked as resolved. Libertas