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Web3 Tutorial: Build an NFT marketplace DApp like OpenSea

fangjun on March 05, 2022

Building an NFT marketplace DApp like Opensea with Solidity and Javascript/React may be an important step in your web3 development journey. Let's g...
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starton profile image
Starton

Hi, I came across your tutorials by chance
Impressive work 👍

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kenjifukuda profile image
Kenji Fukuda

Hi, Thanks for your post.
I have a question.
Y'know, there are so many collections on OpenSea or other marketplaces.
But if I develop marketplace like above, there would be only one NFT collection.
What if I need to create NFT collections on marketplace?

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yakult profile image
fangjun • Edited

this is just a demo.

to support multi collections, you need to do more.

you can refer to the newly released opensea protocol - seaport.

It's great.

github.com/ProjectOpenSea/seaport

the current opensea protocol wyvern protocol is also good. but I think you can dive into seaport directly.

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kenjifukuda profile image
Kenji Fukuda • Edited

Thanks.
But Opensea only works for Ethereum and Solana.
I would like to create a nft marketplace on another blockchain network like Cosmos.
I want to know if the nft collection is stored on a blockchain or in a database like MySQL.
Apps like dappRadar tracks trending nft collections, so I thought there was a protocol for nft collections like ERC721.
Will seaport repository help me find a solution?

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t_p profile image
t_p

@yakult can you suggest a guide or tutorial to getting started building a martketplace with seaport

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yakult profile image
fangjun

have not read one. And I will work on one.

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t_p profile image
t_p

that would be awesome

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JohnRamsey

Hi all. If you are just starting to get acquainted with NFT, then you probably have a lot of questions. Or perhaps you have heard of such a thing as blue chips, but do not yet understand what it means, so I want to share with you the article blog.alphaguilty.io/what-is-a-blue... , which explains it in detail. This information will be useful to everyone, including those who already have an NFT project, as they told how to get into the league.

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FullstackWEB-developer • Edited

Hello, Thank you for your content.
I have a question.
"There is a ERC20Permit, but there is no permit in ERC721 yet."
Please tell me about this content
I found this blog somewhere soliditydeveloper.com/erc721-permit
I can't use above method?
I have to use only proxy resister method like as opensea?

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yakult profile image
fangjun

If I have time in the next two weeks, I can prepare a tutorial on permit both for ERC20 and ERC721.

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Merclown

Im trying to contact you i have a suspect site that use some Daaps to specific wallets. I lost all my NFTs suffering a wallet draining. Can you check if that site have any bad Daaps? Please contact me my email merclown@gmail.com.

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Kimberly

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Sette AWer

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imintify profile image
iMintify

It's a nice, impressive blog for technical users and a great guide. For the non-tech guys who want to create their own NFT Marketplace no-code, check out the app we have launched.

Just have to create a smart contract, upload the nft images and launch a marketplace for free.

imintify.com/

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Jacqueline-buo

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Andreas Klammer

Hey Man! Thanks for the great content.
I got one question tho. Is it the same procedure if I want to build a Dapp for fungable tokens f.e. ERC 20 Tokens?

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yakult profile image
fangjun

yes, same process, different logic

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klammer_andreas profile image
Andreas Klammer

Thanks!
In which way is the logic different? Is their even a short explenation?

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liahimdiazzeddine profile image
Hamman Liahimdi Azzeddine

Thanks for the great content.
I got one question tho. if nft has bin buy in another market, how can we cancel or delete the item 'nft' from sale in our market?????

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yakult profile image
fangjun

Good questions. I will dig how Opensea implement this logic.

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tim905

fangiun. Thanks for tut. Are you able to do custom work?

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fangjun

please dm me at twitter: twitter.com/fjun99

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