How is content versioned in Tahoe?

[Wim Lewis]

Tahoe works along the same general lines, as i understand it. This page gives some details: http://tahoe-lafs.readthedocs.io/en/latest/specifications/uri.html

Immutable file references use a CHK, which is like a git hash: it can only refer to that specific sequence of bytes. Mutable file references use a public/private key pair to refer to a specific version by hash.