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What is NFT
https://en.wikipedia.org/wiki/Non-fungible_token

Non-fungible token

A non-fungible token (NFT) is a unit of data stored on a digital ledger, called a blockchain, that certifies a digital asset to be unique and therefore not interchangeable. NFTs can be used to represent items such as photos, videos, audio, and other types of digital files. Access to any copy of the original file, however, is not restricted to the buyer of the NFT. While copies of these digital items are available for anyone to obtain, NFTs are tracked on blockchains to provide the owner with a proof of ownership that is separate from copyright.

Description

An NFT is a unit of data stored on a digital ledger, called a blockchain, which can be sold and traded. The NFT can be associated with a particular digital or physical asset (such as a file or a physical object) and a license to use the asset for a specified purpose.NFTs (and the associated license to use, copy or display the underlying asset) can be traded and sold on digital markets.
NFTs function like cryptographic tokens, but, unlike cryptocurrencies like Bitcoin, NFTs are not mutually interchangeable, so not fungible. While all bitcoins are equal, each NFT may represent a different underlying asset and thus have a different value.NFTs are created when blockchains string records of cryptographic hash, a set of characters identifying a set of data, onto previous records therefore creating a chain of identifiable data blocks.This cryptographic transaction process ensures the authentication of each digital file by providing a digital signature that is used to track NFT ownership.However, data links that point to details like where the art is stored can die.

Uses

The unique identity and ownership of an NFT is verifiable via the blockchain ledger.Ownership of the NFT is often associated with a license to use the underlying digital asset, but generally does not confer copyright to the buyer: some agreements only grant a license for personal, non-commercial use, while other licenses also allow commercial use of the underlying digital asset.

Standards in blockchains

Specific token standards have been created to support various blockchain use-cases. These include the Ethereum ERC-721 standard of CryptoKitties, and the more recent ERC-1155 standard.The FLOW and Bitcoin Cash blockchains support NFTs.

Ethereum

ERC-721was the first standard for representing non-fungible digital assets on the Ethereum blockchain. ERC-721 is an inheritable Solidity smart contract standard, meaning that developers can create new ERC-721-compliant contracts by importing it from the OpenZeppelin library. ERC-721 provides core methods that allow tracking the owner of a unique identifier, as well as a permissioned way for the owner to transfer the asset to others.
The ERC-1155 standard offers "semi-fungibility", as well as providing a superset of ERC-721 functionality (meaning that an ERC-721 asset could be built using ERC-1155). Unlike ERC-721 where a unique ID represents a single asset, the unique ID of an ERC-1155 token represent a class of assets, and there is an additional quantity field to represent the amount of the class that a particular wallet has.The assets under the same class are interchangeable, and the user can transfer any amount of assets to others.

FLOW

The FLOW blockchain which uses proof of stake consensus model supports NFTs, for example NBA Top Shot is run on the FLOW blockchain. Cryptokitties plans to switch from Ethereum to FLOW in the future.

Tezos

Tezos is a blockchain network that operates on proof of stake and supports the sale of NFT art.
Last modified 5mo ago