Trying to sum up the current proposal (keeping hashes):

1. Extend the hash length to avoid collisions.
   
2. Introduce the concept of, what shall we call it, “update twts”.
   
   • A twt starting with (edit:#3f36byq) tells clients to update the twt #3f36byq with the content of this particular twt.
     
   • A twt starting with (delete:#3f36byq) advises clients to delete #3f36byq from their storage.
     

Right?