I remember the moment when code began to interest me. It was the tail end of 2013 and a cult was forming around a mysterious "crypto-currency" called bitcoin in the excitable tech quarters of London, New York and San Francisco. None of the editors I spoke to had heard of it – very few people had back then – but eventually one of them commissioned me to write the first British magazine piece on the subject.

The story is now well known. The system's pseudonymous creator, Satoshi Nakamoto, had appeared out of nowhere, dropped his ingenious system of near-anonymous, decentralised money into the world, then vanished, leaving only a handful of writings and 100,000 lines of code as clues to his identity.