TL;DR
- Defense argues the key scam-victim witness has no proof her stolen funds touched Tornado Cash and is pushing for a mistrial that could upend the case.
- Independent on-chain researchers traced the victim’s transactions purely through centralized exchanges, finding zero Tornado Cash activity and undermining the prosecution’s narrative.
- Cross-examination exposed gaps in the FBI’s approach, prompting a formal mistrial motion and raising critical questions about privacy mixers and developer liability.
Roman Storm’s high-stakes courtroom showdown took a dramatic turn this week as his legal team signaled they may move to knock the entire trial off course. The co-creator of Tornado Cash faces up to 45 years behind bars, but defense attorneys argue that a key scam-victim witness has no real link to the privacy mixer protocol. If Judge Katherine Polk Failla allows a mistrial, the prosecution’s progress might fall apart.
P.S. – after jury leaves, before they repair to "alternate jury room," Storm's lawyer Patton: Based on our research over the weekend, we can't find that any of Ms. Lin's fund went to Tornado Cash. We need to confer with Mr. Storm about moving for a mistrial
— Inner City Press (@innercitypress) July 21, 2025
Defense Targets Romance Scam Testimony
On Tuesday, Hanfeng Lin took the stand to recount how she lost nearly $200,000 in a WhatsApp romance scam and later hired a crypto recovery firm that alleged her stolen Bitcoins flowed through Tornado Cash.
Storm’s lawyer David Patton immediately challenged that narrative, telling the court their own blockchain research found zero evidence of any Tornado Cash transactions. He suggested admitting Lin’s emotional testimony without proof of connection to the mixer could warrant a trial reset.
On-Chain Sleuths Undermine Prosecution
Independent blockchain researchers have come together to support Storm’s defense. MetaMask security researcher Taylor Monahan publicly traced Lin’s funds, revealing scammers converted her BTC into ETH on centralized exchanges, with no detours through Tornado Cash. Pseudonymous analyst ZachXBT echoed those findings, slamming the recovery firm’s tracing methods as “fundamentally flawed.” Their on-chain sleuthing raises fresh doubts about the prosecution’s case.
Courtroom Clash and Mistrial Motion
The defense’s cross-examination of FBI Special Agent Joseph DeCapua intensified the showdown. DeCapua acknowledged that he was not instructed to look into Lin’s transactions in particular, which left prosecutors in a rush to strengthen their evidence. With an IRS crypto-tracing analyst poised to testify next, Patton warned the jury might already have been influenced by irrelevant or misleading material. He asked for a private conference with Storm before formally filing a mistrial motion.
Implications for Privacy Protocols
Beyond Roman Storm’s fate, the outcome could reshape how privacy-preserving tools are treated under U.S. law. A successful mistrial would force prosecutors back to the drawing board, buying time for advocates of decentralized mixers and emboldening the broader cypherpunk movement. Conversely, a quick retrial could fast-track precedent on developers’ liability for protocol design.
