> You can have strong cryptography even with mutability/overwritability. You can simply issue soft deletes by issuing a tombstone write. It sounds like you are

> You can have strong cryptography even with mutability/overwritability. You can simply issue soft deletes by issuing a tombstone write. It sounds like you are describing a UI for simuating mutablity (like declarativd photo edits in Google Photos) , not actual data mutability.