NFTs are a great way to sell artwork or other collectibles thanks to the properties bestowed upon them by the blockchains on which they live. In particular, NFTs are freely exchangeable and tradable, and their history can be traced back to when they were originally minted, thereby enabling all to verify the authenticity of any given NFT. Except... this only guarantees authenticity in a mechanical sense, for everything that happens after minting, but as anyone who has been even remotely involved in the NFT space will know, a big issue is verifying the legitimacy of the minting itself, and this is where Kleros, the decentralized court system, comes in.