[lgreiv]

Actually, immutability may probably not even required/desired given the surrounding legal construct and the described processes.

Disclaimer: I am not a lawyer and the previous post is my understanding of the described as a layman. I am pretty firm on the technical concepts surrounding blockchain solutions, though.

[LegionMammal978]

I could see immutability as being useful for the same reason that append-only databases in general can be useful, to ensure that unlogged transactions are inherently ruled out. Even with an immutable data structure, changes by the trusted central body can always be encoded as overlaid "corrections".

Compliance with present and future privacy laws could easily become an issue, though, unless those laws contain specific carve-outs.

(I'm also no lawyer, I've just been interested in the cryptography surrounding the big blockchain projects. Much of it looks like it could be surprisingly useful outside the trustless, decentralized contexts everyone likes to talk about.)