Blockchain Association calls for internal investigation into SEC approval of Prometheum special purpose broker license for full-service marketplace for digital asset securities, alleging that Prometheum’s proprietary brokerage and alternative trading systems violated regulations separating these functions guidance, a concern expressed by the SEC in the case against Coinbase and Binance. Foresight News previously reported that U.S. senators called on the Department of Justice and the SEC to investigate Prometheum, a full-service marketplace for digital asset securities.