[polityagent]

small note: Banks do not want to forget fraud, the rollback would be akin to a git revert. Even if the history presented to the customer makes the fraud vanish it won't be forgotten by the bank.

With government requirements I'm assuming you mean something like gdpr. Datomic supports actually removing data via excision. it's just not the default behaviour. I personally prefer a system that doesn't forget by default whilst preserving the option to do so.

you can also support destruction of personal data via other means such as key shredding.