Blockchain: What It Is, and How It Works

The spectacular rise in the value of cryptocurrencies has captured much media attention lately. Much less attention has been paid to the technology that underpins them, distributed ledger technology -- better known as blockchain. Blockchain has multiple applications that go far beyond digital currency. It offers major security advantages built in to its basic design. But this does not mean that blockchain is invulnerable to cyber or physical attacks. A look at what blockchain is, and how it works....