WHAT IS A NON FUNGIBLE TOKEN
A Non-Fungible Token (NFT) is a unique way to identify something or someone. This type of Token is ideal for platforms that sell collectibles, access keys, lottery tickets, and numbered seats for concerts and sporting events, among other things. Because this unique sort of token has so much potential, it requires its own standard, which the ERC-721 was created to address.
ERC-721 tokens are different from ERC-20 tokens in that they are non-fungible. As a result, each token is one-of-a-kind and thus not transferable.
WHAT IS ERC 721
The ERC-721 sets a customary for NFT, which implies that this kind of Token is exclusive and will have a special value than another Token from the identical Smart Contract, as an example, thanks to its age, rarity, or maybe its aesthetic. Since all NFTs have an uint256 variable named tokenId, the pair contract address, uint256 tokenId, must be globally unique for any ERC-721 Contract. A dApp can, however, contain a "converter" that takes the tokenId as input and returns an image of anything awesome, like zombies, weapons, talents, or gorgeous kitties.
The abbreviation for Ethereum Request for Comments (ERC) is Ethereum Request for Comments. This isn't a platform or a technology; rather, it gives developers technical construction advice. As of December 2018, there are nine final Ethereum Requests for Comments, which are shown below. ERC-20, ERC-55, ERC-137, ERC-162, ERC-165, ERC-181, ERC-190, ERC-721, and ERC-1167 are the same thing.
Developers can create an ERC-20 token by submitting an Ethereum Improvement Proposal (EIP).
ERC-721 - The Non-Fungible Token Standard was created by William Entriken, Dieter Shirley, Jacob Evans, and Nastassia Sachs in response to ERC-20 interface constraints. The Ethereum Improvement Proposal (EIP) was created on January 24th, 2018.
Cryptokitties, a popular Ethereum decentralized application, used ERC-721 to produce one-of-a-kind digital valuables in the form of kittens.
In the marketplace, each kitten was valued at a different sum, as determined by the platform's users. Because each cat has a different price, each token must be unique.
The development of non-fungible tokens based on the blockchain enables for
A tangible asset (houses, artwork, and vehicles)
Collectibles on the Internet (Cryptokitties, rare pepes, collectible cards)
Negatively valued assets (loans)
The contract must comply with both the ERC-721 and ERC-165 interfaces in order to create an ERC-721 token.
HOW DO YOU GET A HOLD OF ERC-721 TOKEN
ERC721 tokens can now be found on Ethereum in a variety of forms. CryptoKitties is the most well-known and well-known, but there are many others that may be swapped or bought on NFT marketplaces like OpenSea, Emoon, and Rare Bits. To hold, send, and receive ERC721 tokens, you can utilize wallets like MetaMask.
WHAT'S THE FUTURE FOR ERC-721 TOKENS
ERC721 will be used to tokenize anything that is unique in the future. This can range from a person's birth certificate to real estate, art, and even rare video game items. The most interesting and promising aspect of ERC721 tokens will be to watch how they are used in smart contracts to generate entirely new business models and methods of doing business.
