The point I'm making is we can agree some paper is truth or that a distributed ledger is truth. Failing to send a transaction should void the sale in the first

The point I'm making is we can agree some paper is truth or that a distributed ledger is truth. Failing to send a transaction should void the sale in the first place e.g. Hashed time locked contracts. With some proof of authority logic we can facillitate updates to the ledger by courts or governing bodies i.e the same as adding some new paperwork currently