“There are 6,000 projects and while some are commodities, many are securities under the law," he said. "Right now there are many individuals in this country who’ve been hurt ... There will be more [harm] since this crypto area is trying to stay outside the investor protection perimeter."

Other crypto skeptics at the hearing included Mark Warner (D-Va), a foreign affairs specialist, who warned of crypto's potential to skirt anti-money laundering laws and remarked, "Some of the things I see from intel side scare the dickens out of me."

Warner did acknowledge the crypto industry's capacity to mobilize its supporters, citing a recent dispute in Congress over the definition of brokers, and noting "for a group that says they're unorganized, I’ve never seen a group that’s got as many publication as the crypto community already has.”

All of this suggests that Tuesday's hearing and the ongoing clash between the SEC and Coinbase is likely to be a protracted battle as the regulator and Congress attempt to create rules to oversee the fast-growing crypto industry.