I can retrieve nft data from blockchain, but can't figure out how to show those in card form,like in opensea . Please somebody help me to do this.

NFTs means Non-fungible tokens are exploding in popularity day by day. People are paying big money for these unique collectible cryptocurrency assets.

Now we show How to make NFTs step  by step. There are mostly 6 steps.

The final stage in the NFT minting process is to decide how you want to monetize your NFT. Depending on the platform, you can:

1.sell it at a fixed price: By setting a fixed price, you'll allow the first person willing to meet that price to buy your NFT.

2.set a time auction : A timed auction will give those interested in your NFT a time limit to submit their final bid.

3.start an unlimited auction: An unlimited auction doesn't set a time limit. Instead, you have control to end the auction whenever you want.

How to show retrieve nft data from blockchain in card form ?   

I am new in this technolongy so please someone help me about this.

Hope this will be helpful to you read it carefully you will understand..

If you are cloning the project then run this first, otherwise you can download the source code on the release page and skip this step.

git clone https://github.com/HashLips/hashlips_nft_minting_dapp.git

Make sure you have node.js installed so you can use npm, then run:

In order to make use of this dapp, all you need to do is change the configurations to point to your smart contract as well as update the images and theme file.

For the most part all the changes will be in the public folder.

To link up your existing smart contract, go to the public/config/config.json file and update the following fields to fit your smart contract, network and marketplace details. The cost field should be in wei.

Note: this dapp is designed to work with the intended NFT smart contract, that only takes one parameter in the mint function "mintAmount". But you can change that in the App.js file if you need to use a smart contract that takes 2 params.

Make sure you copy the contract ABI from remix and paste it in the public/config/abi.json file.
(follow the youtube video if you struggle with this part).

Now you will need to create and change 2 images and a gif in the public/config/images folder, bg.png, example.gif and logo.png.

Next change the theme colors to your liking in the public/config/theme.css file.

:root {
  --primary: #ebc908;
  --primary-text: #1a1a1a;
  --secondary: #ff1dec;
  --secondary-text: #ffffff;
  --accent: #ffffff;
  --accent-text: #000000;
}

Now you will need to create and change the public/favicon.ico, public/logo192.png, and
public/logo512.png to your brand images.

Remember to update the title and description the public/index.html file

<title>Nerdy Coder Clones</title>
<meta name="description" content="Mint your Nerdy Coder Clone NFT" />

Also remember to update the short_name and name fields in the public/manifest.json file

{
  "short_name": "NCC",
  "name": "Coder Clone NFT"
}

Or create the build if you are ready to deploy.

Now you can host the contents of the build folder on a server.

How can I connect smart contract to react website for mint nfts ?

someone please  explain oracle...........

NFTs are generally less frequently traded, therefore creating the difficuilty for third parties to observe and retrieve price data. 

This variable represents a sum of the price for every second in the entire history of the contract.

Also You can use this formula to calculate the data

TWAP=(PriceCumulative2-PriceCumulative1)/(timeStamp2-timeStam1).

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