Netflix has released a trailer for its new crypto documentary, Bitconned, about the rise and fall of Centra Tech, a scam that was part of the wave of initial coin offerings in 2017. The blowback from the scheme caught DJ Khaled and Floyd Mayweather, who had promoted it — they were fined by the SEC. Ray Trapani, one of the co-founders, appears to be a key narrator of the Netflix documentary.