Blockchain Development with Hyperledger

Implicit and explicit transactions

Note that you don't often see an explicit transaction definition for a transaction like this; the definition is encoded in the people, processes, and technology that you interact with. For low-consequence transactions such as Daisy's, the transaction definition is implicit. Only if there's a dispute do we get to find out how the transaction is defined. For example, if Daisy's bicycle chain snaps after a couple of days, she might reasonably expect that the chain would be fixed free of charge, or the bicycle replaced, or she would get her money back. This is the point at which Daisy determines the true nature of her transaction with the Winchester bicycle shop.

It looks like this kind of implicit transaction ...