Former boxing champion Mike Tyson is embroiled in a dispute with Fight to Fame, a blockchain startup which has been very publicly claiming that he not only endorsed the company and its planned “Tyson Token” cryptocurrency, but that he is a co-founder and active member of the company. The company has said it plans to host a series of fights around the world, selecting the most popular fighters for a reality TV show and then Hollywood action movies. Tokens would be used by fans to vote for and bet on their favorite fighters, as well as support other projects.