US CFTC
Blockratize, Inc. (event-based binary option) (Jan 2022)
https://www.cftc.gov/PressRoom/PressReleases/8478-22
Ooki DAO (Sep 2022 ~)
Ooki DAO Case
CFTC Charges Avraham Eisenberg with Manipulative and Deceptive Scheme to Misappropriate Over $110 million from Mango Markets, a Digital Asset Exchange (Jan 2023)
https://www.cftc.gov/PressRoom/PressReleases/8647-23
Opyn, Inc. (a blockchain-based digital asset protocol (the Opyn Protocol) and website that offered trading of a digital asset derivative token)
Deridex, Inc. (a blockchain-based digital asset trading protocol (Deridex Protocol) and website that offered trading of “perpetual contracts)
ZeroEx, Inc. (a blockchain-based digital asset protocol (the 0x Protocol) and a front-end application called Matcha that offered users the ability to trade digital assets with leverages)
(Sep 2023)
https://www.cftc.gov/PressRoom/PressReleases/8774-23