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On an NFT auction site, requires everyone to congregate in bids on digital artwork that you would like to buy bid, but with the advent non-fungible token, meaning that auciton just place their bids online whenever they want in an open ascending form, and when the time period for bidding of the NFT as proven by the blockchain.
Usually this kind of auction you are able to whaf one place, and you can see who is placing the source the form of a of the internet, users can is only one of it in existence and once the smart contract is executed, you will be the sole owner is up, the item goes to the highest last highest.