Virgil Griffith is an American computer scientist and former Ethereum Foundation researcher who was arrested in November 2019 at Los Angeles International Airport and subsequently convicted of conspiring to violate the International Emergency Economic Powers Act (IEEPA) after traveling to North Korea in April 2019 — without State Department approval — to speak at the Pyongyang Blockchain and Cryptocurrency Conference, where he presented on how blockchain and cryptocurrency technology could potentially be used by North Korea to circumvent international financial sanctions; he was sentenced to 63 months (5 years, 3 months) in federal prison in April 2022.
Background
Virgil Griffith earned a PhD in computational neuroscience from the California Institute of Technology (Caltech). Before blockchain, he was known for creating WikiScanner in 2007 — a tool that correlated anonymous Wikipedia edits to IP addresses, revealing that major corporations, government agencies, and media organizations had edited Wikipedia articles about themselves (e.g., ExxonMobil editing climate articles, the CIA editing pages about government officials). WikiScanner received significant international press.
He joined the Ethereum Foundation as a freelance researcher and developer, contributing to smart contract security research and Ethereum improvement proposals. He was active in the Ethereum community and known as an enthusiastic, unconventional participant.
The North Korea Trip
In April 2019, Griffith traveled to North Korea — one of the most heavily sanctioned countries under U.S. IEEPA — to speak at the Pyongyang Blockchain and Cryptocurrency Conference. He requested State Department permission for the trip; the request was denied. He traveled anyway.
At the conference, Griffith gave a presentation on blockchain technology, cryptocurrency systems, and potentially how they could be used to move money across international borders. The U.S. government alleged that this presentation provided material support to a sanctioned state engaged in nuclear weapons development and other activities threatening U.S. national security.
Arrest, Trial, and Sentencing
- November 28, 2019 — Arrested at LAX returning from a conference in Singapore.
- 2020 — Indicted in the Southern District of New York for conspiracy to violate the International Emergency Economic Powers Act (IEEPA).
- September 27, 2021 — Pleads guilty to a single count of conspiracy.
- April 12, 2022 — Sentenced to 63 months (5 years, 3 months) in federal prison by Judge Kevin Castel. Judge Castel rejected defense arguments that Griffith only gave general educational information available publicly, noting the trip’s purpose and the deliberate circumvention of denied State Department permission.
The case is widely cited in the crypto industry as a landmark demonstration that presenting information about crypto to sanctioned states can be a federal crime under IEEPA, regardless of whether any funds directly transferred.
Ethereum Foundation Response
The Ethereum Foundation publicly stated after Griffith’s arrest that it had not authorized or encouraged the trip and that Griffith had acted as an individual, not as an official representative of the Foundation.
Key Dates
- 2007 — Creates WikiScanner.
- 2013 — PhD from Caltech.
- 2014–2019 — Works as freelance researcher/developer for Ethereum Foundation.
- April 2019 — Travels to Pyongyang without State Department permission.
- November 28, 2019 — Arrested at LAX.
- September 27, 2021 — Pleads guilty.
- April 12, 2022 — Sentenced to 63 months in federal prison.
Common Misconceptions
- “Griffith transferred cryptocurrency to North Korea.” — No cryptocurrency transfer was alleged. The charge was a conspiracy to violate sanctions by providing technical education on how cryptocurrency could be used to evade financial restrictions.
- “His sentence was unusually harsh.” — For an IEEPA sanctions violation committed knowingly after denial of official permission, federal sentencing guidelines supported the sentence. The judge considered the gravity of assisting a nation actively developing weapons of mass destruction.
Last updated: 2026-04