Auction

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NFTs can also be put on Auction Sale using sellNFT_byBid function of NFTBid contract. An auction sale is the sale of goods through a bidding process.

    SellNFT_byBid(
        address _collectionAddress,
        uint256 _tokenId,
        uint256 _price,
        uint256 _bidTime
    )

• _collectionAddress: address of collection
• _tokenId: Id of token willing to sell
• _price: selling price
• _bidTime: time till NFT is on auction

It emits an event:

    TokenMetaReturn(meta, _tokenIdTracker.current())

• meta: TokenMeta struct
• _tokenIdTracker.current(): a counter tracking current token Id

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