Southwark Crown Court sentenced Jian Wen to 80 months in prison on May 24, 2024, for participating in a money-laundering arrangement involving a wallet that received 150 bitcoin.
The sentencing remarks supplied an unusually detailed judicial account of how cryptocurrency was converted into cash, payment-card balances and overseas property. Judge Sally-Ann Hales KC found that the arrangement was sophisticated, sustained and international. The sentence followed a jury’s rejection of Wen’s claim that she did not know or suspect the bitcoin represented criminal property.
The development mattered beyond one defendant. It showed how British courts were applying conventional proceeds-of-crime law to digital assets while confronting questions specific to Bitcoin: reconstructing a wallet from seed words, tracing transfers across borders and selecting a monetary value for a volatile asset.
A wallet reconstructed from a notebook
The conviction concerned what the court called the JDR wallet. Investigators reconstructed it from seed words found in a notebook seized from Wen’s home on August 5, 2020; the physical wallet device was never recovered.
The wallet was active from June 22, 2019, through June 2, 2020. It received three credits of 50 bitcoin, on June 22, October 16 and November 11, 2019. Wen accepted that she controlled the wallet and made transfers from it, although she disputed knowing the assets were criminal property.
According to the sentencing findings, Wen converted 22.6 bitcoin into cash, sent 5 bitcoin to Igor Mineev and moved 89 bitcoin through entities connected to Michael Burke in Switzerland and Dubai. Police seized the remaining 33.898 bitcoin in May 2021. The transfers through the Burke-related entities funded two Dubai properties and prepaid cards; the court said the properties had subsequently been sold and the proceeds’ location was unknown as of May 24, 2024.
Some peer-to-peer conversions involved bitcoin worth between £20,000 and £50,000, with cash exchanged at street level through unidentified counterparties. The court also described advance account openings, source-of-wealth forms, powers of attorney and cross-border travel. Those steps supported its conclusion that Wen’s culpability fell into the highest guideline category rather than reflecting a limited technical role.
Volatility complicated the harm calculation
The court did not use a May 24 spot-market quotation to value the offense. Instead, the parties agreed that the 116.601 bitcoin transacted from the wallet had a fair value of £809,832.54. They disagreed about the remaining 33.898 bitcoin.
The defense valued that balance at £263,499.49 using June 2, 2019, while prosecutors valued it at £932,257.29 when police seized it in May 2021. Those methods produced competing total valuations of £1,077,332.03 and more than £1.7 million. The judge declined to choose between them because both placed the offense within the same £500,000-to-£2 million sentencing category, for which she adopted a £1 million starting point.
That distinction is important: these were litigation valuations using different historical dates, not a reproducible May 24 market-price series. The sentencing record identified neither an exchange nor an intraday price source.
The wider enforcement context
The court found that the underlying criminal proceeds originated in an investment fraud conducted in China between 2014 and 2017. Its remarks recorded that more than 40 billion renminbi—approximately £4.6 billion in the court’s conversion—was invested by more than 128,000 people. The judge expressly stated that Wen was not alleged to have participated in or known about that underlying fraud.
Reuters reported on May 24 that the broader British investigation had seized wallets containing more than 61,000 bitcoin, attributing that figure to prosecutors. The Crown Prosecution Service had described the operation as the United Kingdom’s largest Bitcoin seizure in its March 2024 conviction announcement.
The May 24 sentence therefore marked a concrete enforcement outcome without resolving ownership or forfeiture of the wider asset pool. Confiscation proceedings remained postponed, and the court made no financial order at sentencing.
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This article provides news and analysis, not investment, legal or tax advice. Digital assets are volatile and may result in total loss.