A non-fungible token (NFT) is a unique digital identifier that is recorded on a blockchain, and is used to certify ownership and authenticity. It cannot be copied, substituted, or subdivided. The ownership of an NFT is recorded in the blockchain and can be transferred by the owner, allowing NFTs to be sold and traded. NFTs can be created by anybody, and require few or no coding skills to create. NFTs typically contain references to digital files such as artworks, photos, videos, and audio. Because NFTs are uniquely identifiable, they differ from cryptocurrencies, which are fungible.
We can use openzepplin library implement ourself nft . [https://docs.openzeppelin.com/contracts/4.x/erc721]
1:Below NFT token contract image .
2:You need to upload images ipfs then generate access link url. We use NTF storage file server . We should create image json file for each image file . Pass json file link parameter on transact .
3:Below video .
nft-token-2-2.mp4
Check out the following resources NFT storage [https://nft.storage/] Testnets [https://testnets.opensea.io/]