What D5000 is describing sounds like a vunerability in bitcoin 
So are you "saying" that it's possible to send bitcoins to an exchange like for example MEXC and then "fool" them by having the script delay the "ownership" by say 10000 blocks... and then if MEXC falls for it and credits the attempt with on exchange credit then later the owner of btc can reverse the transaction (Or doesn't have to as it expires )
So are you "saying" that it's possible to send bitcoins to an exchange like for example MEXC and then "fool" them by having the script delay the "ownership" by say 10000 blocks... and then if MEXC falls for it and credits the attempt with on exchange credit then later the owner of btc can reverse the transaction
(Or doesn't have to as it expires )