OneCoin — The Cryptoqueen Who Sold a Coin That Wasn't There

On 11 June 2016 a woman in a red ball gown walked onto the stage at Wembley Arena as Alicia Keys' "Girl on Fire" played and fireworks went off around her. She told thousands of cheering people that her cryptocurrency was the "Bitcoin killer" and that "in two years, nobody will speak about Bitcoin anymore". Her name was Dr Ruja Ignatova, and her coin was called OneCoin. Behind the gown there was a database, a spreadsheet with a row labelled "fake coins" and, US prosecutors say, more than four billion dollars of other people's money. Sixteen months later she boarded a Ryanair flight from Sofia to Athens. She has not been seen in public since.

The file

The girl from Schramberg

Ruja Plamenova Ignatova was born in Ruse, Bulgaria, on 30 May 1980. When she was ten her family moved to Germany, and she grew up in Schramberg, a small town in the Black Forest. At the University of Konstanz she earned a doctorate in private international law in 2005. She also studied at Oxford, and worked as a consultant for McKinsey & Company in Sofia. The BBC found in 2019 that the degrees were genuine. The Forbes cover her promoters waved about was not: it was a paid advertisement in Forbes Bulgaria with the real cover torn off.

The first warning sign came from a foundry, and it was not in the Black Forest, whatever some retellings say. It was in Waltenhofen, in the Allgäu region of Bavaria. Around 2009–10 Ruja and her father Plamen bought the insolvent Gusswerk Waltenhofen. In 2012, according to German reports, they sold it to a buyer who filed for insolvency days later. In 2016 a court in Augsburg gave Ruja a 14-month suspended sentence and a fine for delaying insolvency and for fraud. German reports date the verdict to April 2016, two months before Wembley; the BBC reported October. The judgment reportedly expected her to commit no further offences.

"Trashy coin"

Her partner was Karl Sebastian Greenwood, a Stockholm salesman with Swedish and British citizenship and a talent for multi-level marketing (MLM). In 2014 they built OneCoin together, and their emails, later quoted by prosecutors in a Manhattan courtroom, show how they saw it from the start.

In June 2014 Ignatova wrote that the plan might not be "really clean", but that with him as "the magic sales machine" they could make it big, "like MLM meets bitch of wall street ;-)". In their correspondence that summer they called the product "trashy coin". On 9 August she listed options for an "exit strategy". The first was: "Take the money and run and blame someone else for this." A few days later Greenwood suggested telling members that they were "mining" their coins, because it was "a story we can sell". Ignatova replied: "We are not mining actually – but telling people shit." Greenwood asked whether any member "(trying to be clever)" could find out.

The packages

You never bought OneCoins directly. You bought "educational packages" of trading and crypto courses from OneAcademy, bundled with tokens that were supposedly turned into coins in "mining pools". Packages cost from €140 up to €118,000. The Glaswegian Jen McAdam started with €1,000, moved up to a €5,000 "Tycoon" package, put in €10,000 of her own in all and drew friends and family in for €250,000. Recruiters earned commissions, and Greenwood, the "global master distributor", took 5% of worldwide monthly sales. The US Justice Department says he made more than $300 million.

According to prosecutors, the coin's price was simply set by head office. It rose from €0.50 to about €29.95 and never went down. In March 2015 Ignatova wrote: "We can manipulate the exchange by simulating some volatility and intraday pricing."

The database

Underneath it all, US prosecutors say that by March 2015 the founders were handing out coins that did not exist even in OneCoin's own private "blockchain". Their spreadsheets had separate rows for "mined coins", "mined coins (real)" and "fake coins". In August 2015, under the subject line "I am afraid this is an issue", Ignatova wrote to Greenwood: "1.3 [billion] fake coins. We are fucked."

The first outsider to say so publicly was Norwegian. In early October 2016 the blockchain developer Bjørn Bjercke took a call from a recruiter offering a chief technology officer job at a Bulgarian crypto company: an apartment, a car and about £250,000 a year. His first task, he was told, would be to build a blockchain, because "they don't have a blockchain today". The company was OneCoin. From the recruiter's description Bjercke concluded the coins were generated by a script on an ordinary SQL server: an inference, not a leak, and OneCoin denied making him any offer. In April 2017 McAdam finally got a straight answer from her upline in a voicemail: "It's our blockchain technology, a SQL server with a database."

In January 2024 a German court in Münster went further, in the trial of a married couple from her circle who handled OneCoin money. Its judgment says OneCoin did run two cheap "blockchains" on two small servers in a mostly residential building in Sofia, but that the balances members saw on their dashboards came from a separate database. The coins were simulated, the mining "difficulty" was set by hand, and the blockchains existed only to hide the fact that no real cryptocurrency had been created.

Wembley, and the north

Wembley was the peak; Greenwood introduced her as "the creator, the mastermind". Documents leaked to the BBC show Britons spent almost €30 million on OneCoin in the first half of 2016.

It spread into Scandinavia too. Sweden's gambling regulator reported OneCoin to the police as an illegal pyramid game in January 2016. That did not stop Edsbyns IF winning the Swedish bandy final in March 2017 with OneCoin's logo on their shirts. Sweden's Financial Supervisory Authority put OneCoin on its warning list that July. In Norway the company claimed about 5,000 members, and several banks told the Gaming Authority they would stop transfers. In Finland, documents seen by Yle suggest nearly 25,000 people put in at least €40 million between 2014 and 2016.

OneCoin's own records show €4.037 billion in sales between late 2014 and late 2016 alone. US prosecutors put the total at more than $4 billion from at least 3.5 million victims. Some people told the BBC it could be as much as €15 billion, but that figure is unverified.

The vanishing

By 2017 the promised exchange, where coins could finally be cashed out, kept slipping, and the walls were closing in. Frank Schneider, one of her advisers, later gave the BBC confidential slides from a Europol "Operation Satellite" meeting in The Hague on 15 March 2017, attended by the FBI and several European forces. He said she had obtained them through her own contacts. According to her brother's later testimony, she had her American lover, Gilbert Armenta, wiretapped and learned that he was cooperating with the FBI. (Armenta later pleaded guilty to laundering OneCoin money, and in February 2023 he was sentenced to five years.)

In early October 2017 she failed to turn up at a big promoters' event in Lisbon. On 12 October a sealed indictment was filed against her in New York. On 25 October she flew Ryanair from Sofia to Athens. Her brother testified that she had obtained a "big passport" and asked him to book her tickets to Vienna, then Athens, and that her bodyguard told him she was met in Athens by people who spoke Russian.

The reckoning

Greenwood was arrested at his home on Koh Samui, Thailand, in July 2018 and extradited to the US that October. He pleaded guilty in December 2022, and on 12 September 2023 he was sentenced to 20 years and ordered to forfeit about $300 million.

Konstantin Ignatov, a former forklift driver whom his sister hired as her assistant, became OneCoin's de facto leader after she vanished. FBI agents arrested him at Los Angeles airport on 6 March 2019. He signed a plea and cooperation deal that October and testified that November. On 5 March 2024 he was sentenced to time served, having spent about 34 months in custody, with two years of supervised release, and went back to Bulgaria.

His testimony helped convict Mark Scott, a former equity partner at the law firm Locke Lord. According to the evidence at his trial, Scott set up sham "Fenero" funds in the British Virgin Islands and moved about $400 million through them, disguised as money from "wealthy European families". He was convicted on 21 November 2019 and sentenced on 25 January 2024 to ten years. His appeal failed in 2025, and in June 2026, after more than two years at home wearing an ankle monitor while he appealed, he reported to a federal prison in Miami to begin his sentence.

Irina Dilkinska, OneCoin's "Head of Legal and Compliance", arranged the transfer of $110 million to a Cayman Islands entity. She was extradited from Bulgaria in 2023, pleaded guilty that November and was sentenced in April 2024 to four years.

The net kept widening. In April 2024 a business consultant, William Morro, was charged in Manhattan and pleaded guilty the same day to conspiracy to commit bank fraud. Prosecutors said he had moved about $35 million of OneCoin-linked money through bank accounts in China and on to Hong Kong and the US without telling the banks where it came from. In October 2024 he was sentenced to a year's probation.

Schneider, the former head of operations at Luxembourg's intelligence service, SREL, was arrested in France in April 2021 on a US warrant. Released to house arrest with an electronic ankle tag, he lost his fight against extradition, which France signed off in February 2023. That May he slipped his electronic monitoring and disappeared. He has never been tried, and the US allegations against him remain unproven. In February 2026 Luxembourg's Reporter revealed he had been officially registered at an address in Junglinster since May 2025; his lawyer says he lives there but has not seen him in person for over three years.

On 30 June 2022 the FBI put Ruja Ignatova on its Ten Most Wanted list, with a reward of up to $100,000. According to CBS, she was only the eleventh woman ever to be listed. The FBI raised the reward to $250,000 in May 2023, and in June 2024 the US State Department offered up to $5 million. In September 2025 prosecutors in Bielefeld charged her with fraud in more than 17,000 cases and with money laundering, mainly to stop the statute of limitations running out; a German trial cannot go ahead without her. In April 2026 the US Justice Department opened a compensation process for victims, with more than $40 million in forfeited assets available and a claims deadline of 30 June, and in June 2026 Guernsey agreed to send £8.59 million of her money to Germany for victims.

Much of this reached the public through The Missing Cryptoqueen, the BBC podcast presented by Jamie Bartlett with producer Georgia Catt. It launched in September 2019, weeks before her brother took the stand, and grew into Bartlett's 2022 book, a 2024 Panorama film and new episodes in 2026.