The modern divorce has always been a theatre of concealment. Offshore trusts in Jersey, ‘forgotten’ accounts in Geneva, the discreet transfer of a painting to a sympathetic relative. Yet, according to family lawyers, the latest hiding place for marital wealth is not a Caribbean island but a string of code.

Cryptocurrency — once the preserve of libertarians and teenage speculators — is now firmly embedded in the portfolios of Britain’s affluent professional classes. Entrepreneurs, financiers and early adopters who bought Bitcoin over dinner-table conversations a decade ago now find themselves sitting on assets worth six or seven figures.

And, when marriages falter, those digital fortunes are becoming harder to ignore — and…