sentences:  In addition to the hash values themselves the order of concatenation (right or left 1,0) or "order bits" are necessary to complete the hash chain.A hash chain is similar to a blockchain, as they both utilize a cryptographic hash function for creating a link between two nodes.However, a blockchain (as used by Bitcoin and related systems) is generally intended to support distributed consensus around a public ledger (data), and incorporates a set of rules for encapsulation of data and associated data permissions.