Since the question seems technology based and not energy based, I assume it is about the technology that Bitcoin uses to power it’s transaction chains and not energy consumption. Blockchain is the underlying technology that many cryptocurrencies operate on, but its unique way of securely recording and transferring information has broader applications outside of cryptocurrency. A blockchain is a type of distributed ledger that uses the computers (nodes) on the network to encrypt the transactions and store them on each node. If the ledger is changed on a single node the entire network knows that transaction is compromised.
