Crypto trading platforms are already knocking on the Commodity Futures Trading Commission’s door to sign up for its newly proposed digital-asset rulebook, according to the agency’s chairman, Michael Selig.

The regulator unveiled draft rules in October aimed at curbing market abuse and writing crypto transaction standards into the federal code. Selig, speaking at the Cantor Convergence fintech conference in Miami Beach this week, said in an exclusive interview with CNBC that a large share of major exchanges already hold CFTC registrations because they list derivatives such as perpetual futures, and would now be able to add spot trading under the same roof.

“We’re also getting interest from new entrants who say, ‘Look, signing up with 50…