expand_less Contraction of Authorization or Authored Chains. This is an abstract distributed data structure to represent and store a sequence or sequences of digital messages such that:

A chain is permanently connected to a single public identifyer. The public identifyers are connected to asymetric key pairs such that the private key is secured and available to the owner of the identity for signing (authenticating) new messages to be added to the chain, or decrypting private messages. When a  ini
A new message can always be added to a given point in an existing chain. Each new message is chained to the message before it in the chain with cryptographic signatures. That is