to me a blockchain is very similar to a cryptographic signature used in a recursive manner, meaning that a new document which is based on the previous document

to me a blockchain is very similar to a cryptographic signature used in a recursive manner, meaning that a new document which is based on the previous document history includes the signatures for all those documents and signs it all in order to prove that the chain has not been tampered with. im not at all a blockchain proponent but i really see a usecase here. but then again i see even git as a blockchain so its not that it would be expensive or exciting to get it working. (Dubai reportedly uses blockchain for their property register) this is actually a common attack vector in countries like Pakistan were someone falsifies a stamped court document that actually the current owner of a certain property is not valid because he bought it from someone who did not actually own the property. the rightful owner is therefor me. (called qabza in urdu)