Blockchains are unique in that, after a transaction is recorded and confirmed, it may?�t be altered. The ledger only permits a single-way details modification. A blockchain is often a distributed general public ledger ??or on the web digital databases ??that contains a history of every one of the transactions https://travisofuhu.blogchaat.com/29641011/5-tips-about-copyright-you-can-use-today