NFT (non-fungible tokens) are a unique cryptographic hash of a digital file. They can be traded on a decentralized exchange and therefore require no middlemen. The owner of the NFT is the one who has the keys to the cryptographic hash stored on the blockchain. Any digital file (composed of 0’s and 1’s) can be converted into a unique cryptographic hash that can then be used to tie the ownership to the digital file.
Although anyone can have a copy of the digital file, only the owner of the NFT will be able to verify it by being the only one with the keys to the transaction on the blockchain.
What bockchain? There are many blockchains that offer NFT trading. The largest one is Ethereum with
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