Comedian Robin Williams once called cocaine “God’s way of telling you you are making too much money”. This role may now have been overtaken by non-fungible tokens, the blockchain-based means to claim unique ownership of easily copied digital assets.

The latest NFT mania involves fantastic amounts of money being paid for “Bored Apes”, 10,000 avatars featuring variants of a bored-looking cartoon ape.

Last month rapper Eminem (real name Marshall Mathers) paid about US$450,000 in Ethereum cryptocurrency to acquire Bored Ape No.