A significant number of North Korean IT workers have been deeply involved in building blockchain protocols, dating back to the 2020 DeFi Summer.

BlockBeats News, April 5th, on-chain investigator Tay (@tayvano_) revealed that a large number of North Korean IT workers have been deeply involved in building various blockchain protocols that we are familiar with and love since the DeFi Summer of 2020, so their resume stating "7 years of blockchain development experience" is not fake, but truly backed by hands-on experience. The crypto protocols involved include SushiSwap, THORChain, Harmony, Ankr, Shib, and Yearn, among others.