Its visual appearance, or phenotype, is determined by the immutable genotype stored in the smart contract. Any two CryptoKitties can be bred using a genetic algorithm, an offspring is produced with its own unique traits (or "cattributes"). ERC721 allowed for the creation of unique, non-fungible tokens.ĬryptoKitties was originally designed to explore the concept of digital scarcity, using smart contracts and ERC721 tokens.Įach CryptoKitty is unique and has its own digital genome, stored in a smart contract. Before the existence of ERC721, tokens on blockchains were fungible, or interchangeable any one Bitcoin or Ethereum token is identical to any other.
How do CryptoKitties work?ĬryptoKitties are non-fungible tokens, originally built on the Ethereum blockchain using the ERC721 token standard.
$0.04746289 -1.87% Terra Classic (Wormhole)īut CryptoKitties has one key difference up its sleeve: each CryptoKitty is completely unique, represented on the blockchain by a non-fungible token (NFT).Ī pioneering example of the technology, it captured the imagination of the crypto community with a fun and tangible example of what you can create using distributed ledger technology.
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