Consensus

An important characteristic of Blockchainsystems which allows users to know that transactions have been executed and to evaluate the trustworthiness of the information about and in those transactions (for example, the date/time of execution and content). In the case of public Blockchains, the umpire that decides consensus is the society of all nodes that choose to participate. In the case of private Blockchains, the umpire is the consortium of nodes given permission to create consensus. There will be more about the different ways in which consensus can be reached in the text below.