Coinbase is a US publicly traded company regulated by the SEC. Their business model is garbage but they have orders of magnitude more data that shows that as a company, they’re legit.
In December 1996, Emanuel Pinez, the CEO of Centennial Technologies, and his management recorded that the company made $2 million in revenue from PC memory cards. However, the company was really shipping fruit baskets to customers. The employees then created fake documents as evidence that they were recording sales.