What is blockchain?
AIt’s as dull as it is baffling, Swapnil. Blockchain is essentially a big secure public spreadsheet, automatically populated when a transaction is made with the precise time and value of that transaction. When a network of computers operates on a blockchain, the thing is up-todate by default, and each machine knows what the other has done. Blockchain’s involvement in Bitcoin means every transaction can (theoretically) be traced, and no two people can have the same coin at one time. It’s breaking off into other areas of tech, like energy and medicine, so it’s great, but GaGu laments not being able to make silly jokes about it.