On: On Git's lack of respect for immutability and the Best Practices for a DVCS

[biohacker42]

I don't know of a single version control system that doesn't let you change history in a straightforward manner.

http://www.accurev.com/

It has an append only db.

[jrockway → biohacker42]

Are the revisions cryptographically validated, and are there other copies of the repository to compare against? If not, it doesn't matter, you can just edit the disk blocks.

(Yes, maybe you don't care about history that much. But if history is a tool for developers rather than the legal team, you shouldn't care if the developers mutate it.)