In proof we trust

Blockchain technology will revolutionise far more than money: it will change your life. Here’s how it actually works

Since the early 1980s, computer coders had been trying to find a way of digitally replicating the cash transaction – that direct, frictionless, A-to-B transaction – but nobody could find a way. The problem was known as the problem of ‘double-spending’. If I send you an email, a photo or a video – any form of computer code – you can, if you want, copy and paste that code and send it to one or a hundred or a million different people. But if you can do that with money, the money quickly becomes useless. Nobody could find a way around it without using a middle man of some kind to verify and process transactions, at which point it is no longer cash. By the mid 2000s, coders had all but given up on the idea. It was deemed unsolvable. Then, in late 2008, quietly announced on an out-of-the-way mailing list, along came Bitcoin.

Read Dominic Frisby‘s essay on aeon