What is the best way to purchase CryptoKitties? The smart contract’s external appearance, or phenotype, is determined by its unchangeable genotype. Any two CryptoKitties can be bred, and an offspring with its distinct features is developed via a genetic algorithm (or “cattributes”). Using smart contracts and ERC721 tokens, CryptoKitties was created to evaluate the notion of digital scarcity.Įach and every CryptoKitty has its digital genome, stored in a smart contract. ERC721 enabled the development of non-fungible, one-of-a-kind tokens. Before the introduction of ERC721, blockchain tokens were fungible or interchangeable every Bitcoin or Ethereum token is identical to any other. Users have already purchased almost USD 1 million worth of virtual pets just a few days after the introduction.ĬryptoKitties are Non-Fungible Tokens (NFTs) created using the ERC721 token standard on the Ethereum network.
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