Raised on the remote Shetland archipelago, he left school at 13 to become a trawlerman before moving into construction, eventually earning £85,000 a year digging tunnels for Crossrail.
In the fog of multiple addictions, he lost the “addresses” of between five and 10 bitcoins, rendering his digital buried treasure – worth up to £300,000 today – impossible to retrieve.
Cryptocurrencies are an alternative way of making payments to cash or credit cards. The technology behind it allows the ‘money’ to be sent directly to others without it having to pass through the banking system. For that reason they are outside the control of governments and are unregulated by financial watchdogs – and transactions can be made in a way that keeps you reasonably pseudonymous.
If you own a crypto-asset you control a secret digital key that you can use to prove to anyone on the network that a certain amount of that asset is yours. If you spend it, you tell the entire network that you have transferred ownership of it, and use the same key to prove that you are telling the truth. Over time, the history of all those transactions becomes a lasting record of who owns what: that record is called the blockchain.