TechFlow News According to The Block, court documents show that Tesla CEO Elon Musk rejected OpenAI's proposal to issue cryptocurrency through ICO in 2018. Musk and his legal team claimed that Sam Altman and Greg Brockman, co-founders of OpenAI, wanted to help the company make a profit by issuing tokens at the time, but Musk believed that this would cause OpenAI and its related personnel to lose credibility.