PlusToken, a Chinese-operated cryptocurrency pyramid scheme founded in April 2018, defrauded approximately 2.7 million investors of cryptocurrency that a Jiangsu court valued at 14.8 billion yuan — roughly $2.25 billion at June 2019 exchange rates — before its operators fled in June 2019, leaving users unable to withdraw funds. The scheme presented itself as a high-yield smart crypto wallet offering monthly returns of 9–18 percent through an in-app feature marketed as the “AI Dog” arbitrage robot. No such trading engine existed; every return paid to early participants was funded by incoming deposits from new recruits.
In June 2019, withdrawal processing froze and the operators’ farewell — “sorry, we have run” — circulated through the platform’s WeChat channels. Six principals were arrested in Vanuatu and deported within weeks. A second enforcement wave in July 2020 arrested 109 individuals including all 27 identified ringleaders. On November 29, 2020, the Yancheng Intermediate People’s Court in Jiangsu convicted fourteen operators — Chen Bo, the scheme’s founder, received the maximum eleven years — with sentences ranging to two years and fines of 120,000 to 6 million yuan.
Chainalysis traced stolen funds through more than 70,000 Bitcoin addresses and documented their gradual liquidation through over-the-counter brokers on Huobi, a process that correlated with Bitcoin price suppression throughout the second half of 2019. Chinese police ultimately seized cryptocurrency then valued at approximately $4.2 billion, a figure higher than the court’s 2019 valuation due to price appreciation in the intervening year.
Bitconnect, a cryptocurrency lending platform founded by Satish Kumbhani and launched publicly in 2016, collected approximately $2.4 billion from investors worldwide before collapsing on January 16, 2018, when its operators abruptly announced closure of the lending and exchange operations. The platform had promised returns approaching 1 percent per day — roughly 3,700 percent annually — through a proprietary “Trading Bot and Volatility Software” that purportedly exploited Bitcoin price movements on behalf of lenders. No such trading engine existed; DOJ prosecutors later established that Bitconnect operated as a classic Ponzi scheme, using new investor deposits to pay earlier participants while operators diverted funds through a global promoter network.
Kumbhani, a resident of Hemal in the Indian state of Gujarat, was indicted by a federal grand jury in the Southern District of California on February 25, 2022, on charges including wire fraud conspiracy, commodity price manipulation conspiracy, operation of an unlicensed money transmitting business, and international money laundering conspiracy. He faces a maximum statutory penalty of 70 years if convicted on all counts. As of November 2024, Kumbhani remains at large and in fugitive status; his location has not been confirmed by US authorities. Indian enforcement authorities separately tracked him to the Ahmedabad area and issued a lookout notice, but no arrest has been made.
Glenn Arcaro, Bitconnect’s top national promoter in the United States, pleaded guilty to conspiracy to commit wire fraud on September 1, 2021, and was sentenced to 38 months in prison in September 2022. Arcaro forfeited no less than $24 million. The US Justice Department subsequently sold $56 million in seized Bitconnect-linked cryptocurrency to begin compensating victims. Carlos Matos, whose viral conference appearance became the scheme’s internet symbol, was not charged; he was a promoter without a documented role in the scheme’s operations or financial controls.
OneCoin, founded by Dr. Ruja Ignatova and Karl Sebastian Greenwood in Bulgaria beginning in 2014, collected more than $4 billion from an estimated 3.4 million investors worldwide by selling a cryptocurrency that did not exist on any real blockchain. The scheme ran primarily between late 2014 and late 2017, during which OneCoin was marketed globally as a Bitcoin rival backed by proprietary mining and a private distributed ledger. Regulators and prosecutors later established that OneCoin had no functioning blockchain; what the company maintained was a private database that administrators could manipulate at will, with “coins” allocated to investor accounts bearing no relationship to any cryptographic proof of work or consensus mechanism.
Ignatova, a German-Bulgarian national holding a doctorate in law from the University of Konstanz, disappeared on October 25, 2017, boarding a Ryanair flight from Sofia to Athens. She has not been seen publicly since. In 2022, the FBI added her to its Ten Most Wanted Fugitives list. In June 2024, the US State Department raised the reward for information leading to her arrest to $5 million. As of mid-2026, she remains at large. A US federal indictment against her, filed in the Southern District of New York and originally sealed in October 2017, charges wire fraud, securities fraud, and money laundering conspiracy.
Her brother and successor as OneCoin’s public face, Konstantin Ignatov, was arrested at Los Angeles International Airport in March 2019, pleaded guilty to fraud-related charges under a cooperation agreement, testified at a co-conspirator’s trial, and was sentenced to time served — 34 months — by Judge Edgardo Ramos on March 5, 2024. Karl Sebastian Greenwood, co-founder and head of OneCoin’s global sales network, was arrested in Thailand in 2018 and sentenced to 20 years in federal prison in 2023. In April 2026, the DOJ opened a $40 million victim compensation process from forfeited assets, with claims accepted through June 30, 2026.
USI-Tech, a cryptocurrency investment platform founded by German nationals and operated out of Dubai, defrauded tens of thousands of investors across North America, Europe, and Asia of approximately $150 million before shuttering its US operations overnight in early 2018 and abandoning its global customer base entirely. The scheme’s core product was the “BTC Package” — a €50 unit of Bitcoin that investors were promised would yield 1 percent per day over 140 days, equating to a 140 percent total return. Layered atop the package program was a twelve-level multilevel marketing commission structure that paid recruiters 10 percent on direct referrals and distributed residual commissions across the full downline, ensuring that the platform’s most financially invested participants were also its most motivated promoters.
In December 2017 and January 2018, North American securities regulators began issuing emergency cease-and-desist orders. USI-Tech responded by suspending US operations, claiming the shutdown was a voluntary compliance measure, while continuing to solicit investors in other jurisdictions. By April 2018, a cascade of regulatory actions across Spain, New Zealand, and multiple Canadian provinces had effectively expelled the platform from regulated markets. After its global operations wound down, the platform went dark.
The principal operator identified by US prosecutors is Horst Jicha, a German national and co-founder of USI-Tech whom the Eastern District of New York indicted in August 2023 and arrested in Miami in December 2023. Jicha pleaded not guilty, was released on a $5 million bond with house arrest conditions, and absconded in October 2024 after disabling his ankle monitor. He remains a fugitive as of mid-2026. The other principals named in early industry reporting — including individuals operating under the names Jochen Knecht and Thomas Gutschalk — were never publicly identified by US prosecutors as indicted co-defendants. Approximately $150 million in Bitcoin and Ether sent to deposit addresses controlled by Jicha and associates after the platform’s closure remains unrecovered.
Trade Coin Club (TCC), a Belize-registered cryptocurrency investment program operated primarily by Brazilian national Douver Torres Braga, raised more than 82,000 Bitcoin — worth approximately $295 million at prices prevailing during the scheme’s operation — from over 100,000 investors across North America, the Caribbean, and globally between 2016 and 2018. The scheme promised minimum daily returns of 0.35 percent from a sophisticated automated trading bot that would execute millions of micro-arbitrage transactions per second across cryptocurrency exchanges. No such trading infrastructure existed. Trade Coin Club was a Ponzi scheme: investor withdrawals were funded entirely by new participant deposits, not by any trading activity.
Braga fled the United States as regulatory and law enforcement pressure mounted. He was located in Switzerland and extradited to the Western District of Washington in February 2025 on a 13-count federal indictment for wire fraud and conspiracy. The SEC had filed separate civil charges in November 2022 against Braga and three U.S. promoters — Joff Paradise, Keleionalani Akana Taylor, and Jonathan Tetreault — who had collectively built and managed the scheme’s recruitment infrastructure in the United States. The U.S. criminal trial against Braga was scheduled for April 2025; as of mid-2026, the outcome of that proceeding is reflected in the case status noted here.
Investor losses were spread across a predominantly U.S. and Caribbean investor base, with heavy recruitment through social media, cryptocurrency community forums, and direct sales networks. Many participants who joined as investors subsequently became promoters, earning tiered commissions for recruiting downline members — a structure that blurred the line between victim and participant and that prolonged the scheme’s operational life by creating a large population of financially invested advocates.
GainBitcoin, India’s largest cryptocurrency fraud at the time of its exposure, defrauded an estimated 8,000 investors of approximately $300 million (and by some later enforcement estimates considerably more) between roughly 2015 and 2018 by promising 10 percent monthly returns over 18 months through an investment program framed as Bitcoin cloud mining and portfolio management. The scheme was operated by Amit Bhardwaj, a Pune-based entrepreneur who marketed himself as India’s pre-eminent Bitcoin expert and built a multi-level referral structure in which participating investors earned commissions for recruiting additional participants, compounding recruitment depth and investor losses simultaneously.
Bhardwaj was arrested at Bangkok’s Suvarnabhumi Airport in March 2018 and extradited to India, where he faced charges from the Pune Police Cyber Cell and, later, the Enforcement Directorate and Central Bureau of Investigation. He was granted bail by India’s Supreme Court on health grounds in April 2019. Bhardwaj died on January 15, 2022, at age 38, at Fortis Hospital, Vasant Kunj, Delhi, following cardiac arrest; he had tested positive for COVID-19 earlier that month and was hospitalised after a sudden deterioration in his condition. He died on bail, before the case reached trial, without having been convicted. The framing in this file’s status field reflects the prosecution’s forward posture and documented fraud findings, not a personal conviction against Bhardwaj, who died uncharged at trial.
The cases against Bhardwaj’s co-accused — including his brothers Ajay Bhardwaj and Vivek Bhardwaj, and GainBitcoin co-founders Nikunj Jain and Sahil Baghla — were transferred by Supreme Court order in December 2023 to the CBI as the common investigating authority. As of early 2026, those proceedings remained active, with CBI raids conducted at more than sixty locations across India in February 2025. The scale of the alleged fraud, the complexity of the multi-company structure Bhardwaj had built across six countries, and the death of the primary accused have collectively made GainBitcoin one of the longest-running unresolved cryptocurrency fraud proceedings in any jurisdiction.
Crypto888 Club was a cryptocurrency pyramid scheme that operated primarily out of Thailand from approximately 2017 through 2019, promising investors daily returns on cryptocurrency deposits framed as proceeds from automated trading and arbitrage. The scheme collapsed in 2019 after operators ceased paying returns and withdrew from public contact; no operator has been arrested or brought to trial as of the time of writing. Estimated losses of approximately $38 million have been cited in Thai-language financial media and in reports linked to investigations by Thailand’s Department of Special Investigation (DSI), though no court judgment has established a final verified figure.
The scheme recruited heavily among Thai nationals and members of South and Southeast Asian diaspora communities, using a multi-level marketing structure in which participants earned commissions by bringing in new depositors. Promotional materials emphasized the speed and certainty of the stated daily returns — figures cited in participant accounts ranged from 0.5 to 2 percent per day — and positioned the platform as a passive income vehicle accessible to anyone who could acquire and deposit cryptocurrency. In practice, the daily returns were funded by new investment capital rather than any trading operation, a structure that could only persist as long as recruitment outpaced withdrawal demand.
When the scheme’s operators ceased operations in 2019, withdrawals stopped without notice and the platform’s online presence was dismantled. Thai financial authorities, including the DSI and the Securities and Exchange Commission of Thailand (SEC Thailand), recorded the collapse among a cluster of similar crypto yield schemes that operated during the 2018–2019 period. None of the scheme’s identified operators have been located or prosecuted. The $38 million figure, while widely cited in Thai reporting, should be understood as an estimate derived from reported member counts and average deposit sizes rather than from an audited accounting of funds.
Research note: Documentation of Crypto888 Club is substantially thinner than for similarly-sized schemes in common-law jurisdictions. No English-language court filing, SEC or DOJ press release, or major blockchain analytics report covers this scheme directly. The account below draws on Thai-language financial media coverage, SEC Thailand public alerts, and the pattern of DSI investigations into crypto pyramid schemes during 2018–2019. Dollar-figure precision should be treated with corresponding caution.