Chastain was asked to resign by OpenSea in September 2021 after a Twitter user discovered apparent evidence that he had been engaging in insider trades. He was arrested and charged with money laundering in June 2022.
Chastain unsuccessfully argued in his defense that information about which NFTs would be prominently featured on OpenSea wasn't insider knowledge, and "nobody told Nate that he couldn't use or share that information". However, prosecutors argued that attempt to use anonymous accounts to make the trades suggested that he knew what he was doing was wrong.
This case has been described as the first NFT-related insider trading case, and could set a precedent for other similar charges.