Authorities are intensifying their scrutiny on privacy-focused protocols such as cryptocurrency mixers, evidenced by recent legal actions against Samourai Wallet's founders.
The mounting regulatory pressure also led to the decision by ZkSNACKs to discontinue its Coinjoin service starting 1 June.
This move reflects a broader trend of regulatory crackdowns on crypto mixers and similar tools that obscure cryptocurrency transactions.
The decision by crypto firms to phase out legally ambiguous products in the United States (US) underscores mounting concerns regarding authorities' stance on certain cryptocurrency services.
Another One Bites the Dust: Tornado Cash Developer Jailed 64 Months, Guilty of $1.2B Money Laundering
Alexey Pertsev, the creator of the cryptocurrency mixing protocol Tornado Cash, was convicted of money laundering by Dutch judges at the s-Hertogenbosch Court of Appeal on 14 May.
The court's statement reads:
"Tornado Cash does not pose any barrier for people with criminal assets who want to launder them. That is why the court regards the defendant guilty of the money laundering activities as charged."
Judge Henrieke Slaar said from the bench:
“Tornado Cash in its nature and functioning is a tool intended for criminals. The criminal user is fully facilitated.”
The verdict follows his involvement in facilitating illicit transactions on the platform between 9 July 2019, and 10 August 2022.
He received a sentence of five years and four months in prison for allegedly laundering $1.2 billion worth of assets through the platform.
The Oost-Brabant district court in the Netherlands issued the sentence on Tuesday, citing Pertsev's role in developing the Ethereum (ETH)-based coin mixing system, which facilitates the obfuscation of digital assets.
Following the session, the 31-year-old Russian residing in the Netherlands was escorted by police to the court's holding cells.
He will remain there until the public prosecutor determines an appropriate prison facility in the Netherlands for his offenses.
Pertsev's legal team now has a 14-day window to appeal the court's decision, commencing today.
Interestingly, it seems that the duration he spent incarcerated from his arrest in August 2022 until Tuesday's verdict will not be deducted from the prison time he is currently sentenced to serve.
Tornado Cash Developer Has Been Jailed Since 2022
In August 2022, the developer faced imprisonment in the Netherlands after Tornado Cash came under scrutiny from the US government.
At the time, the government had blacklisted the crypto mixing tool, linking it to aiding entities such as the North Korea-backed Lazarus Group in laundering illicit proceeds.
The Lazarus Group is suspected to be behind the record $625 million hack on Axie Infinity's Ronin Bridge in March 2022.
It is alleged that Lazarus laundered over $455 million of the stolen funds through Tornado Cash, which has facilitated over $7 billion in crypto laundering since its inception in 2019, as per the US Department of the Treasury's Office of Foreign Assets Control.
An indictment preceding the trial alleged that between 9 July 2019, and 10 August 2022, Pertsev engaged in habitual money laundering activities, suggesting he should have been aware of the criminal origins of illicit transactions on the Tornado Cash platform.
Following 19 months of investigation and vigorous debates concerning the essence of open-source code, his trial reached its zenith in March 2024 within a Dutch courtroom.
Two days of testimony culminated in a heartfelt final plea from Pertsev, who confronted the looming prospect of conviction and imprisonment.
Pertsev had expressed his bewilderment in his closing remarks:
“I cannot comprehend two things. The fact that I am responsible for abuse of Tornado Cash by someone else. The second thing is prison time as punishment of any amount. I don’t see how it will help me, or anyone else, or victims."
Prosecutors contended that the developer failed to implement adequate safeguards to prevent illicit money laundering.
Authorities alleged that some of the most notorious hackers, including the North Korean state-backed Lazarus Group, utilised the protocol for their criminal activities.
During the March’s trial, public prosecutor Martine Boerlage advocated for a 64-month prison sentence for Pertsev, a Russian-born software expert, citing his alleged involvement in laundering $1.2 billion through the decentralised cryptocurrency mixer.
Pertsev, however, maintained his innocence, emphasizing his role as a programmer without any criminal intent.
He told the court:
“I never had the desire to help or tolerate criminals in any way, I have a different mindset. I hope you understand that."
Supporters of Pertsev argue that his incarceration could have a "chilling effect," deterring developers from engaging in projects that might attract law enforcement scrutiny.
Keith Cheng, Pertsev's defense attorney, highlighted Tornado Cash's function as a privacy tool for the Ethereum blockchain, noting that blockchain transactions are immutable and publicly accessible.
But Pertsev's defenders fought back that his role was not directly linked to any criminal activity, Dutch prosecutors dispute this assertion.
They liken his involvement to that of a bank cashier who processes transactions without scrutinising the source of the funds.
Additionally, prosecutors contend that Pertsev and other co-founders were fully cognizant that their operational decisions facilitated criminal activities.
Text messages between Tornado Cash's founders, discussing methods to bypass anti-money laundering checks, were also presented by the prosecution.
House Arrest Granted for Pertsev Prior to May Verdict
In April 2023, Pertsev was released from incarceration but continued to be confined to house arrest pending his trial.
Throughout this period, Pertsev was subject to electronic monitoring and required to wear an ankle monitor.
However, in November, Dutch authorities opted to withhold Pertsev's release, citing concerns over potential flight risk and suspicions of undisclosed assets.
The announcement of Pertsev's release garnered a warm reception from both the cryptocurrency community and privacy advocates.
Tornado Cash's Link to North Korea Sees No End
United Nations sanctions monitors have uncovered North Korea's latest cyber-financial activities, detailing the laundering of $147.5 million through the crypto mixer Tornado Cash.
This money, suspected to have been stolen from the HTX cryptocurrency exchange at the end of last year, was funnelled through Tornado Cash in March, as outlined in a document submitted to the UN Security Council sanctions committee.
Drawing from data provided by crypto analytics company PeckShield and blockchain research firm Elliptic, the research underscores North Korea's sophisticated methods for circumventing international sanctions.
The monitors have investigated a total of 97 suspected North Korean cyberattacks on cryptocurrency companies from 2017 to 2024, amounting to approximately $3.6 billion.
In 2024 alone, North Korea is believed to be responsible for 11 cryptocurrency thefts totalling $54.7 million.
In response to these revelations, the international community has intensified its scrutiny and regulatory measures against Tornado Cash, frequently utilised by hackers to obscure the origins of illicit funds.
The "Golden Trio" of Tornado Cash
Amidst Pertsev's legal proceedings in the Netherlands, other developers of the crypto mixer, Roman Storm and Roman Semenov, also find themselves entangled in allegations of money laundering and sanctions violations in the US.
Storm is slated for trial this September, while Semenov remains unarrested thus far.
Last year, Storm was apprehended after Tornado Cash reappeared on the US sanctions watchlist.
Accusations against Storm include money laundering and breaching US sanctions, with his trial scheduled for 23 September, during which he will remain free on bail.
Moreover, the recent challenge by the US Department of Justice (DOJ) to Storm's attempt to dismiss the charges has sent ripples through the cryptocurrency community.
On 26 April, the DOJ outlined the reasons why Storm must address his alleged involvement in Tornado Cash's illicit activities.
The DOJ asserts that Storm and co-founder Semenov are implicated in plotting money laundering, running the platform without a license, and contravening sanctions, warranting a jury's scrutiny.
Storm's legal team contends that Tornado Cash functions as a privacy tool and should not be held accountable for its misuse.
They vehemently deny accusations of laundering over $1 billion or colluding with North Korean cybercriminals, citing a lack of substantiating evidence.
Pertsev's Arrest Triggered Backlash from Crypto Community
The previous indictment suggests that Pertsev should have been wary of the questionable origins of certain transactions on the platform he helped create.
However, there is currently no evidence indicating that Pertsev actively engaged in facilitating criminal transactions beyond his contributions to the open-source code of the crypto mixing protocol.
Nonetheless, the ongoing case has stirred significant apprehension among open-source code developers, as it could establish a precedent for holding developers accountable for how criminals utilise their code.
Members of the crypto community are openly challenging the verdict.
Raphaël Bloch, co-founder of 'The Big Whale,' echoed these concerns in a recent tweet, characterising Pertsev's money laundering conviction as perilous and emphasizing his role as a developer of an open-source tool.
Additionally, Tornado Cash operates as a non-custodial crypto mixing protocol, meaning it never retains or manages the funds transferred via the protocol.
Among Pertsev's supporters is American whistleblower Edward Snowden, who condemned the arrest as "deeply illiberal and profoundly authoritarian."
Pablito, the head of security research at Blockfence, expressed disappointment, calling the ruling a "sad day for privacy, crypto, and open-source."
He emphasized that "the war is not over," underscoring privacy as a fundamental human right.
Alexandre Stachtchenko, a web3 expert, shared similar sentiments.
Michelle Weekley, the director of product development at Byte Federal, offered her perspective, suggesting that the ruling indicates crypto users must either comply with AML/KYC regulations or face legal consequences.
There are even calls for donation to Roman and Alexey's legal defence.
No Light at the End of the Tunnel for DeFi Regulation
This landmark ruling underscores the complexities of regulating decentralised finance (DeFi) and cryptocurrencies.
Its implications could reverberate worldwide, potentially setting a precedent for similar cases.
Moreover, the sentencing may reshape regulations governing DeFi platforms providing anonymity services.
Amanda Tuminelli, the legal chief of DeFi Education Fund, asserts that the US' opposition to crypto mixer Tornado Cash reflects a palpable "disregard for privacy."
In order to protect privacy and support open source tech development, the government cannot arbitrarily hand out a lawsuit or sentence someone.
However, despite the overwhelming support from the crypto community, no one is above the law.