NFT Marketplace for 6551 like securities market

We think ERC6551 - TBA is like securities. The TBA's value is value of holding assets like ERC20. So we created a market that enable to transact NFT as value of TBA's assets using chainlink.

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Inspiration

We think ERC6551 - TBA is like securities. So the NFT marketplace that is not normal is needed.

What it does

We made calculatePrice() function. It makes listings NFT’s price become this NFTboundAccount’s balance. If listings NFTboundAccount has 1LINK, listing NFT price is about 6$, and It settled about 0.003ETH. And this contract has functions as NFT marketplace.

First you use listItem() and list your NFT. Second you use calculatePrice() and change NFT’s price to NFTboundAccount’s balance. Finally someone can buy NFT as price is NFTboundAccount’s balance.

So you can buy NFT as the value of NFTboundAccount ’s assets, ERC20.

How we built it

We made calculatePrice() function using chainlink oracle price data feed. And we use codes about ERTC6551 created by tokenbound team. We read and referenced the chainlink article about how to make marketplace contract.

Challenges we ran into

We use a new concept, ERC6551 and chainlink oracle first time.

Accomplishments that we're proud of

We make a NFT marketplace for ERC6551 earlier than opensea.

What we learned

How to use chainlink oracle , ERC6551, how to make marketplace contract

What's next for NFT Marketplace for 6551 like securities market

We want to tell ERC6551 fans about this marketplace concept. In the future, everyone can make a security like S&P500 ETF and transact using NFT and ERC6551.

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