Git is an example of a blockchain without much cryptography, as someone else explained here. The only cryptography is the SHA1 hash that links commits together

Git is an example of a blockchain without much cryptography, as someone else explained here. The only cryptography is the SHA1 hash that links commits together, otherwise all cryptography is optional. And that's totally okay because such repositories are usually run by people who have the authority over it. A blockchain is a special kind of linked graph that uses cryptography to link each node, otherwise, there are no additional requirements and there are plenty of reasons you might not want anything else.