Too Long; Didn't Read
A central aspect of <a href="https://3iq.ca/3iq-research-group/blockchain-basics-2/" target="_blank">blockchain technology</a> is the distributed ledger, which contains a record of all previous transactions. It is called a <em>distributed</em> ledger because it is not stored in a central location, rather it is stored across a network of computers across the world. Key to the operation of a distributed ledger is ensuring the entire network collectively agrees with the contents of the ledger; this is the job of the consensus mechanism.