Coinbase (COIN) has quietly crossed a threshold that Wall Street would recognize immediately: it has become, by its own definition, the only full-service prime brokerage in crypto.

John D’Agostino, head of strategy at Coinbase Institutional, said the definition of a prime broker still follows a familiar Wall Street checklist: trading, custody, financing, derivatives and cross-margining. In crypto, he added, there’s an extra layer, staking. “If you can do all of those at scale, you’re a prime,” he said.

In equities and fixed income, only a handful of firms, Goldman Sachs (GS), Morgan Stanley (MS) and Bank of America (BAC), truly qualify as full-service primes, D’Agostino said. Smaller brokers can support funds, but they…