It’s not a blockchain, it’s a merkle tree. You could probably get away with signing an “implode” message and appending it to the tree, instructing any conformi

It’s not a blockchain, it’s a merkle tree. You could probably get away with signing an “implode” message and appending it to the tree, instructing any conforming client to wipe the account upon receipt (or at least cease to retransmit). That would give users the option to request their data be removed.