SEC Slaps Down on Crypto as Unregistered Securities in Tornado Cash Sanctions Case
The Fifth Circuit just gutted the Treasury’s bid to sanction Tornado Cash developers outright, vacating parts of the OFAC blockade while slamming Tornado Cash itself as an unregistered money transmitter dealing in securities. This split ruling hands a partial win to crypto devs Roman Storm and Alexey Pertsev, but keeps the mixer in the crosshairs—signaling regulators can still hammer privacy tools without full Treasury muscle. Markets are breathing easier on dev protections, but the securities label sticks like glue, fueling trader jitters over DeFi’s wild west.
It all kicked off when OFAC slapped sanctions on Tornado Cash in 2022, branding the Ethereum mixer a tool for money launderers tied to North Korea hacks. Devs Storm and Pertsev sued, arguing the sanctions nuked their First Amendment rights and overreached into code as speech. The district court partly agreed, blocking sanctions on the open-source smart contracts but upholding them against the devs personally. Treasury appealed to the Fifth Circuit, desperate to defend its blacklist power.
Judges dove into whether Treasury could freeze immutable blockchain code. They ruled no—sanctions on the smart contracts themselves were vacated as unlawful, since OFAC can’t seize or block decentralized, permissionless protocols. But the court nailed Tornado Cash as an “unhosted wallet” and unregistered money transmitter under BSA rules, affirming personal sanctions on Storm and Pertsev for running interfaces that shuffled sanctioned funds. Treasury wins on enforcement bite, devs score on code immunity—what changes is regulators must target people, not pure protocol.
In plain speak, this means your DeFi code might be safe if it’s truly decentralized and open-source, but if you’re the dev pushing buttons or front-ends, expect the feds at your door. Treasury’s sanctions sword got dulled on immutable tech, but courts greenlit personal liability for mixing services—echoing SEC’s playbook without needing securities fights.
Crypto markets feel the shift: SEC’s authority takes a backseat here to Treasury/BSA rules, easing CFTC vs SEC turf wars but ramping FinCEN oversight on mixers and wallets. Decentralization gets a shield—pure on-chain tools dodge blanket bans—but that unregistered transmitter tag amps risks for DeFi protocols mimicking banks, hitting stablecoins like Tether if they touch mixers. Exchanges face stricter KYC to avoid tainted funds, traders dump privacy plays amid sentiment souring on anything “mixer-adjacent,” yet devs cheer lighter code-level regulation opening innovation doors.
DeFi builders, build decentralized or bust—regulators hunt operators, not oracles.