Circle, the issuer of one of the biggest stablecoins, priced its IPO at $31, above its expected range and giving it a market value of $6.8 billion.

Gnosis has rebooted Circles, marking what it hopes will be a new age of user-driven money. But how many will be keen to co-create the financial future?

Big investors like BlackRock want to buy Circle’s stock, showing a growing interest in stablecoins. Some people worry the IPO ...