Satoshi's bitcoin: why 1.1 million coins could be frozen

Around 1.1 million bitcoin are attributed to Bitcoin's inventor, Satoshi Nakamoto. At Sunday morning's price of $83,045 that is a good $91 billion, or roughly 81.5 billion euros, spread across early addresses from the network's first year. The coins are regarded as untouched. They sit nonetheless at the centre of one of the fiercest debates among Bitcoin developers: a draft numbered BIP-361 would freeze them before a quantum computer can one day steal them. The question of what happens if Satoshi returns is as old as Bitcoin itself.