Sergey Grybniak, founder of blockchain marketplace Opporty International, has pushed back against key claims included in a Securities and Exchange Commission (SEC) legal complaint against him and his company. The case in question surfaced on Jan. 21 when the SEC filed a complaint in court accusing Grybniak and Opporty International of allegedly conducting an initial coin […]The post Opporty founder calls SEC’s ICO lawsuit ‘grossly overstated’ and ‘untruthful’ in an open letter appeared first on The Block.