The Cryptographic Hash

Software heritage ID is a cryptographic hash for long-term preservation, otherwise known as the software heritage ID. SWHID has been used to identify people and objects since before computer science was born. In digital technology you find extrinsic identifier in digital system on tabletop or nacloo - this is an international standard of chemical notation. So if you don't have a register, because there is no link between it and your object, where you do not need a register, you are looking at intrinsic identifiers.