SEC Chairman Gary Gensler testifies before the U.S. Senate Committee on Banking, Housing and Urban Affairs during an oversight hearing on Capitol Hill in Washington, D.C., September 15, 2022.

The current crypto frenzy is "reminiscent of what we had in the 1920s before the federal securities laws were put in place," said U.S. Securities and Exchange Commission Chairman Gary Gensler. "Hucksters. Fraudsters. Scam artists. Ponzi schemes. The public left in line at the bankruptcy court."

Speaking remotely at the Piper Sandler Global Exchange and FinTech Conference in New York City, Gensler said most crypto tokens are securities and come under the purview of the SEC. He also reiterated exchanges that list such tokens must register with the regulatory agency.