Non-fungible tokens (NFTs) are apparently petering out a little. One in three collections have "essentially expired" wNelson Mandela's arrest warrant was sold at auction for $130,000 to fund a heritage site. He was first arrested for treason in 1961, before he was released, and imprisoned again in 1962. He spent the next nearly 30 years of his life in prison and was released on February 11, 1990.