Newbie question. AFAIK, each US banknote has a unique serial number. Is the same true for bitcoin? Does each bitcoin have a unique identifier, regardless who owns it? Does each satoshi have a unique identifier?
bitcoin is different compared to fiat which has a unique identification number, bitcoin does not have that. when you have bitcoin in your wallet, it is yours, and people do not need to see any identification number as long as there is bitcoin in your wallet, then the bitcoin is yours. bitcoin does not require an identification number, since all transactions will be recorded on the blockchain. so whatever the transaction is, someone can see from and to whom the bitcoin was sent.