The classic ransom is a suitcase full of unmarked U.S. dollar bills. Bitcoin’s role in the Colonial Pipeline hack shows the global currency of crime has a rival. That’s a sort of sign of bitcoin’s success, but it also sets the scene for regulators to step up their interventions.

The Riksbank, Sweden’s central bank, has announced the launch of a year-long pilot project of its proposed e-krona. The project will use distributed ledger technology inspired by the blockchains that run cryptocurrencies.