Virgil Griffith, is an American programmer. He worked extensively on the Ethereum cryptocurrency platform, designed the Tor2web proxy along with Aaron Swartz, and created the Wikipedia indexing tool WikiScanner. He has published papers on artificial life and integrated information theory. Griffith was arrested in 2019 and in 2021 pleaded guilty to conspiring to violate U.S. laws relating to money laundering using cryptocurrency and sanctions related to North Korea. On April 12, 2022, Griffith was sentenced to 63 months imprisonment for assisting North Korea with evading sanctions and is currently in a federal low-security prison in Pennsylvania.

Ethereum is a decentralized blockchain with smart contract functionality. Ether is the native cryptocurrency of the platform. Among cryptocurrencies, ether is second only to bitcoin in market capitalization. It is open-source software.