> why would you be so afraid that the transaction would be cancelled? The transaction will likely be for goods, services and/or money. If one or more parties d

> why would you be so afraid that the transaction would be cancelled? The transaction will likely be for goods, services and/or money. If one or more parties don't provide said goods, services or money then the other parties may well want the transaction cancelled. That's different from them all being willing to transact in the first place. That's not a justification for irreveribility. The opposite in fact. But if you were planning on screwing your customer, say, the irreversibility is a bonus.