Blockchain: utilities primed for digital challenge

摘要

Blockchain emerged in 2008 as the distributed,rndecentralized digital ledger underpinning cryptocurrencyrnBitcoin, recording transactions in an immutable way. Inrnreality it works like this: an individual (or a machine)rnregisters as a member of a blockchain, which can be public,rnlike Bitcoin, or private, for example a street of householdersrnor a group of traders. The individual/machine receives anrnonline wallet that can be charged up with a digital currency.rnThe individual/machine can then transact with otherrnmembers registered to the blockchain.