Jonelle Still, the Director of Investigations and Intelligence at Mastercard Inc.'s CipherTrace, has submitted a report in support of the defense in the United States v. Roman Sterlingov case. This case involves Bitcoin Fog, a cryptocurrency mixing service, and the report questions the validity of data obtained by prosecutors from blockchain investigative group Chainalysis. The report was filed at the request of Sterlingov's defense attorneys and raises concerns about the accuracy of the conclusions drawn from Chainalysis' data.
The report focuses on the claim that the data provided by Chainalysis cannot be verified on-chain. It argues that the blockchain forensics tools were misused to conclude that Sterlingov was the operator of Bitcoin Fog without concrete evidence on the blockchain. Sterlingov is accused by the US government of founding Bitcoin Fog, which allegedly facilitated illegal money-laundering transactions worth $336 million. He was arrested in 2021 following a decade-long investigation.
Sterlingov's legal representatives, Thor Ekland and Michael Hassard, argued that Chainalysis failed to use the data to accurately trace transactions. They claim that the government's case relies heavily on Chainalysis' data, including the assertion that IRS agents messaged Bitcoin Fog' s help desk, asking if The service was suitable for money laundering activities. They allege that the government's claims are based on these interactions and that there is no hard evidence to prove the money laundering allegations.
CipherTrace's report underscores the issues surrounding Chainalysis' data and conclusions. The report concludes that blockchain forensics tools can only provide investigative leads and should not be considered a primary source of evidence. The report recommends an independent audit of Chainalysis and its blockchain analysis methodology to prevent false arrests in the future.
As all of Sterlingov's assets were seized during the trial, both his defense team and CipherTrace provided their assistance pro bono to support his legal efforts. The case raises important questions about the use of blockchain analysis in criminal cases and the need for accurate and verifiable evidence in legal proceedings involving cryptocurrencies.
