Blockchain is a public ledger
A blockchain is a public ledger of all transactions that have ever been executed. It is all the time growing as completed blocks are auxiliary to it plus than a new set of recordings. The blocks are subsidiary to the blockchain in a linear, chronological order through cryptography, ensuring that they remain meddle-proof.
The blockchain for that marginal note stands as a tamper-proof scrap book of all transactions upon the network, distributed to all participants. It has to the potential to shorten costs for international payment transfers by one-third even though accelerating the promptness of such transactions.