🚨 Tornado Cash Dev Guilty Verdict: Open-Source Coders Now in the Crosshairs?

The crypto world just got a chilling wake-up call. A Tornado Cash developer's conviction isn't just about one case—it's a red flag for every open-source programmer building privacy tools.

When code becomes culpability

Suddenly, writing anonymizing smart contracts looks riskier than trading memecoins on leverage (and that's saying something). The precedent could freeze innovation faster than a Celsius withdrawal.

Privacy tech vs. regulators: Round 47

This verdict proves regulators won't distinguish between creating tools and facilitating crime. Next target? The GitHub repos of every mixer, VPN, and encryption protocol.

Bonus jab: Meanwhile, Wall Street banks launder billions annually and get fined less than a Crypto.com Super Bowl ad.

Sketchy legal foundations

At issue in rendering a verdict was how § 1960 defines “money transmission.” The law requires transmitting funds on behalf of the public and has traditionally meant moving others’ money as a custodial intermediary — not publishing permissionless code. Yet SDNY prosecutors convinced the jury that deploying Immutable smart contracts meets that definition.

Coin Center executive director Peter Van Valkenburgh spoke to the flawed logic in a must-listen X space on Wednesday: “I can’t transfer your funds if I don’t have them in my possession and in my control.” And yet that’s exactly how Storm’s Tornado Cash functioned: no custody, only code.

The government also shut out FinCEN’s own 2019 guidance on the matter, which explicitly carves out non‑custodial software providers from Money Service Business (MSB) liability, as Fund DeFi’s Amanda Tuminelli explained: “The DOJ said they don’t have to listen to that guidance…They can come up with their own interpretation.”

That disregard for regulatory alignment undermines legal clarity and due process.

A warning for every DeFi dev

What happens when writing neutral, useful software tools becomes laden with risk? This verdict signals that simply publishing code could mean criminal liability — regardless of intent or control. Yes, it’s just one case, but this guilty verdict still will embolden prosecutors and intimidate developers.

Even more alarming: It exemplifies how jurisdiction is elastic. Peter Van Valkenburgh aptly calls SDNY “the sovereign District of New York,” capable of reeling in any dev, anywhere, if even a single user in Manhattan runs your code. This worry is no longer theoretical. Between Storm’s conviction and the Samourai Wallet developers’ recent plea deal, it’s a blueprint for future prosecutions unless the law is changed, or the interpretation repudiated.

DOJ’s approach: Unfair, hypocritical and dangerous

Let’s call it what it is: Prosecuting a developer who doesn’t touch users’ funds while letting large financial actors facing multi‑billion‑dollar laundering scandals skate by is hypocrisy.

Compared to world-scale financial scandals involving multinational banks, the criminal case against Storm is outrageous. In cases like the 1MDB scandal, where over $4.5 billion was siphoned from Malaysia’s sovereign wealth fund with the help of major global financial institutions, few individuals faced meaningful criminal consequences.

Goldman Sachs, which helped underwrite billions in 1MDB bond sales, ultimately reached a deferred prosecution agreement with the DOJ in 2020. The bank paid $2.9 billion in fines but avoided criminal conviction, and no senior executives were charged. Only one former banker for Goldman’s Asia group, Roger Ng, received a prison sentence, and the DOJ closed the matter in 2024 without further indictments.

By contrast, Roman Storm’s role was limited to writing and deploying open-source smart contracts that others used, yet even on the lesser money-transmitter count, he faces up to a maximum of five years prison time. (Storm himself sounded an optimistic note following the verdict.)

Legal experts argue that this represents a double standard in enforcement. “If you don’t handle other people’s money,” said Van Valkenburgh, “you shouldn’t be held to the same regulatory expectations as a bank like Credit Suisse or Goldman Sachs.”

The DOJ’s approach not only criminalizes innovation but diverts enforcement resources away from large-scale financial misconduct that poses far greater systemic risk. While traditional financial institutions routinely secure settlement deals for billion-dollar offenses, developers facing felony charges will think twice before publishing open-source tools that promote privacy and financial autonomy. 

Political remedies needed

The Blockchain Regulatory Certainty Act (BRCA), now tacked onto the CLARITY market‑structure legislation, WOULD codify that non‑custodial developers are not money transmitters, aligned with the FinCEN guidance. Van Valkenburgh describes it as a “really good simple statutory drafting exercise to clamp the brakes on this abuse of prosecutions.”

But even if that makes it through Congress — still a big if — CLARITY isn’t retroactive, so it won’t help Storm. Yet it can spare future developers.

“There’ll be a moment in a couple of months where it might be important to call your senator,” Van Valkenburgh said.

On the other side of the regulatory spectrum stands SEC Commissioner Hester Peirce. In a speech this week, she emphasized financial privacy as a constitutional right and warned against treating privacy‑protecting code as criminal. She reminded us: “Denying people financial privacy — whether through sweeping surveillance programs or restrictions on privacy‑protecting technologies — undermines the fabric and freedoms of our families, communities, and nation.” 

Peirce also preached disintermediation — the idea that technology should obviate the need for intermediaries, and not add new mandates. She warned against deputizing private actors to surveil each other, saying it’s “antithetical to a free society.” 

These principles directly clash with SDNY’s approach: criminalizing neutral tools that enhance one’s financial privacy. Peirce’s vision is of protecting, not policing, innovation.

Storm’s legal team is expected to challenge the conviction in the Second Circuit Court of Appeals, focusing on the misinterpretation of federal law. Key legal questions were foreclosed during pretrial motions, not left for the jury, Tuminelli said. “The jury was fenced in on the 1960 charge because they weren’t given the opportunity to really make the decision on the part that’s most relevant… the definition of money transmission,” she said.

The outcome of the appeal could have major implications for the crypto ecosystem. Coin Center is also supporting a related civil lawsuit in Texas.

The CLARITY Act, while offering no retroactive relief, could lessen the impact of Storm’s guilty verdict, clarifying that publishing noncustodial code alone can’t be treated as a criminal act. Without reform, every DeFi dev runs a risk.

Crypto can feel directionless at times. However, this is a clear fork in the road: What’s decided in the months ahead will shape the future of crypto development both in the United States and outside of it.

Let Tuminelli’s warning mobilize us, Peirce’s plea for privacy guide us, and Van Valkenburgh’s strategy direct us. 

The legal battle isn’t over, and the political one is still in the early innings.

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