Bitcoin, the decentralised digital currency, seemed on the verge of disappearing after every scandal, crash or hack. But eight years later, it's not only growing but accelerating, with the price of a single BTC "coin" recently climbing above $5400.

And it isn't the only cryptocurrency; competitors include Litecoin, Dogecoin and Ethereum (a currency that supports "smart contracts"). These graphs, videos and explainers contain everything you need to know.