Crypto News
Senator Cynthia Lummis has made Section 604 of the CLARITY Act the centerpiece of her push to shield open-source developers, citing the August 6, 2025 conviction of Tornado Cash co-founder Roman Storm on a conspiracy to operate an unlicensed money transmitting business as the clearest evidence that non-custodial builders face real criminal exposure under current law. The jury deadlocked on the two more serious charges, conspiracy to commit money laundering and conspiracy to violate sanctions, and the conviction carries a maximum five-year sentence. The Digital Asset Market Clarity Act cleared the House 294-134 in July 2025 and the Senate Banking Committee 15-9 in May 2026, but has not yet received a Senate floor vote. More than 60 CEOs and founders from Coinbase, Uniswap, Kraken, a16z crypto, and Paradigm signed a June letter calling Section 604 a non-negotiable condition of their support for the broader bill.
Why it matters
Section 604 is drawn from the Blockchain Regulatory Certainty Act first introduced in 2018 and codifies what FinCEN's 2019 guidance already stated administratively: a non-controlling developer who publishes distributed-ledger software, ships self-custody tools, or runs infrastructure nodes is not a money transmitter under 31 U.S.C. § 5330 or 18 U.S.C. § 1960. The operative threshold is the "non-controlling" test. A developer qualifies only if they lack the legal right to control user transactions, lack unilateral ability to initiate transfers on demand, and cannot effectuate transfers without another party's approval. Tornado Cash fits that architecture on paper, the smart contract executes autonomously and the deployer holds no key that moves user funds, which is exactly the argument Lummis is using to anchor the legislative case.
Market impact
The carve-out is narrower than the industry framing implies. Any protocol whose deployer retains an upgrade key, a multisig override, a pause function, or a fee switch with discretionary control fails the test and stays exposed to the same prosecution theory that put Storm in front of a jury.
Frequently asked questions
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What is Section 604 of the CLARITY Act?
Section 604 is a federal safe harbor that codifies FinCEN's 2019 guidance, exempting non-controlling developers of distributed-ledger software, self-custody tools, and node infrastructure from being classified as money transmitters under 31 U.S.C. § 5330 and 18 U.S.C. § 1960.
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How does the Roman Storm conviction connect to Section 604?
Storm was convicted on August 6, 2025 of conspiracy to operate an unlicensed money transmitting business for co-founding Tornado Cash. Lummis cites the case as direct evidence that non-custodial developers face criminal exposure under current law and that Section 604's safe harbor is needed.
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What is the 'non-controlling' test in Section 604?
A developer qualifies only if they lack the legal right to control user transactions, lack unilateral ability to initiate transfers on demand, and cannot effectuate transfers without another party's approval. The threshold excludes any operator who retains an upgrade key, multisig, pause function, or fee switch.
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Where does the CLARITY Act stand in Congress?
The bill cleared the House 294-134 in July 2025 and the Senate Banking Committee 15-9 in May 2026, but has not yet received a Senate floor vote. Active inter-committee friction remains unresolved and no floor date is scheduled.
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Does Section 604 protect every DeFi protocol?
No. Only protocols whose deployer never controls user funds and never has unilateral ability to initiate transactions meet the test. The provision is narrower than industry framing implies, and most active DeFi deployments retain some form of administrative control that disqualifies them.
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