{"id":7927,"date":"2023-09-05T12:21:23","date_gmt":"2023-09-05T16:21:23","guid":{"rendered":"https:\/\/coincentral.com\/?p=7927"},"modified":"2023-09-07T17:04:37","modified_gmt":"2023-09-07T21:04:37","slug":"cryptokitties-beginners-guide","status":"publish","type":"post","link":"https:\/\/coincentral.com\/cryptokitties-beginners-guide\/","title":{"rendered":"What is CryptoKitties? A Beginner\u2019s Guide on the Blockchain Collectible Cats"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">In December 2017, a new game became a trending fad in the blockchain world. Collectible CryptoKitties allowed users to buy, own, and trade unique, adorable cartoon cats on the blockchain. Around the time of launch, CryptoKitties was so successful that it slowed the <\/span><a href=\"https:\/\/coincentral.com\/what-is-ethereum\/\"><span style=\"font-weight: 400;\">Ethereum<\/span><\/a><span style=\"font-weight: 400;\"> network. Just a few days after launch, users had already spent over $1 million on these collectible cats.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The cool thing about CryptoKitties is they\u2019re a demonstration. Of course, they\u2019re fun and cute on their own. However, they also show the potential of blockchain for trading and securing digital assets. This was the driving principle behind the creation of CryptoKitties. In the white paper, the founders discuss the narrow focus of most blockchain projects on payments. Ultimately, they hoped CryptoKitties would help people expand their vision of what a blockchain could do.<\/span><\/p>\n<h2><b>Not a Currency, But an Asset<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Most blockchain projects launch with a cryptocurrency. These are tradable tokens that represent some utility value in a project or even a share in a company. Token offerings have become an incredibly successful fundraising device for new startups. In some cases, too successful as projects with minimal expertise or roadmap can raise millions of dollars.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">CryptoKitties are not a currency. Instead, they\u2019re blockchain assets. They\u2019re structured similarly to most other tokens. However, they have one major difference. Each CryptoKitty is unique, and they\u2019re not meant to be fungible. Fungibility is key for a currency. It means that a dollar is a dollar, no matter where you got it, what year it was minted, or where it has been before you received it. They have value because we agree on their value.<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-7933\" src=\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05.png\" alt=\"cryptokitties auction\" width=\"1352\" height=\"800\" srcset=\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05.png 1352w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05-591x350.png 591w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05-621x367.png 621w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05-300x178.png 300w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05-768x454.png 768w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05-761x450.png 761w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.24.05-600x355.png 600w\" sizes=\"(max-width: 1352px) 100vw, 1352px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Non-fungible tokens rely on their uniqueness and scarcity to create value. Each CryptoKitty is an ERC-721 token with unique features. These unique features are written into code as the CryptoKitty\u2019s phenotype and genotype. In other words, the CryptoKitty\u2019s genetic information that determines its appearance and other characteristics is written directly into the code of the ERC-721 token.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The phenotype and genotype combinations mean that there are four billion possible CryptoKitties, making it likely that the CryptoKitty you own is unique in the world.<\/span><\/p>\n<h2><b>Built on Ethereum<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The game uses the Ethereum network rather than creating its own blockchain. Smart contracts administer every aspect of CryptoKitty creation and trading. As a result, there\u2019s no central authority that can change, remove, or otherwise alter a CryptoKitty once it has been created. The person who owns that ERC-721 token owns the kitty, and can hold it, allow it to mate, or trade it at any time.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Since it\u2019s built on Ethereum, CryptoKitties uses Ether as payment for all transactions. It\u2019s not yet possible to buy CryptoKitties with fiat currency. In the future, the development team hopes to offer options for fiat payment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Owning and trading CryptoKitties also requires you use a browser integration for your Ethereum wallet. MetaMask is the easiest option to do this. It is possible to write code that communicates directly with the CryptoKitty smart contract. However, to use the online user interface and view your kitties, you\u2019ll need to install MetaMask and keep the CryptoKitty tokens in that wallet.<\/span><\/p>\n<h2><b>Where New Kitties Come From<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The genesis cat was born and adopted on December 2, 2017. Since then, a new cat has been born every 15 minutes. This will continue until November 2018, at which point no new generation zero CryptoKitties will exist. According to the <\/span><a href=\"https:\/\/drive.google.com\/open?id=1soo-eAaJHzhw_XhFGMJp3VNcQoM43byS\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">white pa-purr<\/span><\/a><span style=\"font-weight: 400;\"> (yes, that\u2019s the real title of the document), only 50,000 gen-0 kitties will ever exist.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Outside of the generation zero cats, CryptoKitties can also breed with each other. Any kitty can be a sire or a dame for a breeding pair. The owner of the dame will receive the newly-born CryptoKitty. That kitty will have the genetic cattributes (yes, that\u2019s also not a typo) of its parents, but it will also have random variations in some cattributes as well. Those random mutations might be rarer than its parent cattributes. In very rare cases, a \u201cfancy cat\u201d with custom artwork might be born.<\/span><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-7932\" src=\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05.png\" alt=\"breeding cryptokitties\" width=\"1353\" height=\"465\" srcset=\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05.png 1353w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05-591x203.png 591w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05-621x213.png 621w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05-300x103.png 300w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05-768x264.png 768w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05-874x300.png 874w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.42.05-600x206.png 600w\" sizes=\"(max-width: 1353px) 100vw, 1353px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">There\u2019s no theoretical limit to how many CryptoKitties can exist. As long as you\u2019re willing to pay the transaction fees for breeding two cats, you can create a new one.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A market for breeding rare cattributes has emerged over time. If you\u2019d like to breed your CryptoKitty with another person\u2019s kitty, you\u2019ll likely need to pay a siring fee to that owner. There\u2019s also now a market for \u201cvirgin\u201d kitties that have never been bred before, especially gen-0 virgins.<\/span><\/p>\n<h2><b>Blockchain Art?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">This explosion in digital collectibles and unique assets raises the question: Is this art?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cryptokitties are beautiful and cute. Nevertheless, they also resemble art in that they\u2019re unique and valuable because they\u2019re scarce. This is especially true in the case of fancy cats that come with custom artwork and are even rarer.<\/span><\/p>\n<p><a href=\"https:\/\/coincentral.com\/blockchain-technology-art\/\"><span style=\"font-weight: 400;\">Blockchain art<\/span><\/a><span style=\"font-weight: 400;\"> and digital scarcity is an emerging trend. It\u2019s possible to imagine artists using the blockchain to secure the <\/span><a href=\"https:\/\/coincentral.com\/blockchain-art-provenance-future-digital-art\/\"><span style=\"font-weight: 400;\">authenticity and provenance<\/span><\/a><span style=\"font-weight: 400;\"> of their pieces. CryptoKitties just happens to be blockchain-native. However, that doesn\u2019t mean it\u2019s not art.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ultimately, the creators of CryptoKitties call it a game, and they don\u2019t seem interested in the artistic aspect. Instead, the company behind the project feels it\u2019s a fun way to help people learn about blockchain. Just the same way Minesweeper introduced people to computers, Flash games showed people the internet, Farmville brought people to social media, and Angry Birds taught people about smartphones.<\/span><\/p>\n<h2><b>Technical Stuff: The CryptoKitty Smart Contract <\/b><\/h2>\n<p><span style=\"font-weight: 400;\">CryptoKitties relies on a modular structure of a core contract plus other smart contract libraries. The core contract tracks ownership and ownership transfer for all kitties. It also checks approval for siring new CryptoKitties. Beyond that, all other functionality comes from pointers in the main contract that call other contracts in the library.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Breeding, genetics, and auctions take place in other contracts. As previously mentioned, all functionality is available to anyone by interacting directly with the smart contracts on the Ethereum blockchain. However, for most users, it\u2019s easiest to use MetaMask and CryptoKitties\u2019 intuitive online user interface.<\/span><\/p>\n<h2><b>How to Buy CryptoKitties<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The easiest way to get a CryptoKitty is to purchase one at auction on the website. Since kitties can have unique characteristics, each will sell for a different price.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You\u2019ll need Ether before you can buy a CryptoKitty. That\u2019s easy to purchase for fiat through most major exchanges. <\/span><a href=\"https:\/\/coincentral.com\/bitfinex-review\/\"><span style=\"font-weight: 400;\">Bitfinex<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/coincentral.com\/coinbase-review\/\"><span style=\"font-weight: 400;\">Coinbase<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/coincentral.com\/kraken-exchange-review\/\"><span style=\"font-weight: 400;\">Kraken<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/coincentral.com\/gdax-review\/\"><span style=\"font-weight: 400;\">GDAX<\/span><\/a><span style=\"font-weight: 400;\">, or <\/span><a href=\"https:\/\/coincentral.com\/gemini-review\/\"><span style=\"font-weight: 400;\">Gemini<\/span><\/a><span style=\"font-weight: 400;\"> will all take fiat.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Next, get the MetaMask browser extension and set up a MetaMask wallet. Transfer your ETH to your MetaMask wallet. Then, follow the prompts on the CryptoKitties website to sign up and bid for a kitty.<\/span><\/p>\n<h2><b>How to Store CryptoKitties<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">You can keep your CryptoKitties in your MetaMask wallet if you want to be able to view and trade them in the browser.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you\u2019d like to put your kitties in cold storage, a <\/span><a href=\"https:\/\/coincentral.com\/ledger-nano-s-wallet-review\/\"><span style=\"font-weight: 400;\">Ledger Nano S<\/span><\/a><span style=\"font-weight: 400;\"> can store ERC-721 tokens.<\/span><\/p>\n<h2><b>Team: Axiom Zen<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The team behind CryptoKitties is Axiom Zen. They create all kinds of projects on the cutting edge of technology like virtual reality and blockchain. CryptoKitties is only one of their ventures.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The funding stream for CryptoKitties is unique in the blockchain space. Axiom Zen is selling the generation-zero kitties at auction and keeping the proceeds. However, they also make a small percentage (3.75%) on every transaction that takes place in the official marketplace. After this year, all generation-zero kitties will be gone and ongoing revenue will come from transactions in the marketplace.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">That doesn\u2019t mean that using the marketplace is required. You can negotiate and trade CryptoKitties outside the official marketplace without paying Axiom Zen a cent. The auction smart contract is merely a useful and trusted option to transact.<\/span><\/p>\n<h2><b>Timeline &amp; Roadmap<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">In the first week after its launch in December 2017, the platform had over 60k users, 100k cats, and $5 million in sales. That week, CryptoKitties accounted for 25% of Ethereum network traffic.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The following week, it grew to 150k users and over $15 million in sales.<\/span><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-7930\" src=\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07.png\" alt=\"cryptokitties roadmap\" width=\"1269\" height=\"839\" srcset=\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07.png 1269w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07-591x391.png 591w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07-621x411.png 621w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07-300x198.png 300w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07-768x508.png 768w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07-681x450.png 681w, https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Screenshot-2018-04-10-at-11.47.07-600x397.png 600w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">In 2018, a CryptoKitties mobile app will launch with some of the functionality of the full web version. The project also aims to accept fiat currencies this year. By the end of 2018, all generation-zero cats will have been born.<\/span><\/p>\n<h2><b>Final Thoughts: CryptoKitties as an Early NFT Game<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Whether you think CryptoKitties is a fad, the fact remains it has been effective at introducing people to blockchain and widening the possibilities of what blockchain could be used for beyond currency. As one of the most successful blockchain projects in terms of news coverage and mass adoption, CryptoKitties has played an important role in the history of blockchain. That alone should make CryptoKitties a valuable collector&#8217;s item many years from now, even if the market for such collectibles dies down over the coming years.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CryptoKitties took the blockchain world by storm in 2017. We take a look back at the launch and the technology driving these digital collectibles.<\/p>\n","protected":false},"author":24,"featured_media":7929,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"iawp_total_views":47,"footnotes":""},"categories":[5712],"tags":[7221,7805,7806],"class_list":{"0":"post-7927","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-guides","8":"tag-art","9":"tag-blockchain-art","10":"tag-cryptokitties"},"wppr_data":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is CryptoKitties? A Beginner\u2019s Guide on the Blockchain Collectible Cats - CoinCentral<\/title>\n<meta name=\"description\" content=\"CryptoKitties took the blockchain world by storm in 2017. 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A Beginner\u2019s Guide on the Blockchain Collectible Cats - CoinCentral\",\"isPartOf\":{\"@id\":\"https:\/\/coincentral.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/coincentral.com\/cryptokitties-beginners-guide\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/coincentral.com\/cryptokitties-beginners-guide\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/coincentral.com\/wp-content\/uploads\/2018\/04\/Group-20.png\",\"datePublished\":\"2023-09-05T16:21:23+00:00\",\"dateModified\":\"2023-09-07T21:04:37+00:00\",\"author\":{\"@id\":\"https:\/\/coincentral.com\/#\/schema\/person\/f25f619861434a4978e9331821e31fd5\"},\"description\":\"CryptoKitties took the blockchain world by storm in 2017. 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A Beginner\u2019s Guide on the Blockchain Collectible Cats"}]},{"@type":"WebSite","@id":"https:\/\/coincentral.com\/#website","url":"https:\/\/coincentral.com\/","name":"CoinCentral","description":"Your Bitcoin, Ethereum, and other Cryptocurrency HQ","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/coincentral.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/coincentral.com\/#\/schema\/person\/f25f619861434a4978e9331821e31fd5","name":"Bennett Garner","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/coincentral.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/74c436bc232818e77dcd4eb94547fdf8de07bb1d1aeb26787fb41ba3e54efaff?s=96&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/74c436bc232818e77dcd4eb94547fdf8de07bb1d1aeb26787fb41ba3e54efaff?s=96&r=g","caption":"Bennett Garner"},"description":"Bennett is an editor at Coin Central and freelance technology writer specializing in blockchain, software development, and AI writing. Visit Bennett's personal website to learn more about him and read more of his writing.","sameAs":["https:\/\/www.bennettgarner.com","https:\/\/x.com\/bennettgarner"],"url":"https:\/\/coincentral.com\/author\/bennett-garner\/"}]}},"_links":{"self":[{"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/posts\/7927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/comments?post=7927"}],"version-history":[{"count":0,"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/posts\/7927\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/media\/7929"}],"wp:attachment":[{"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/media?parent=7927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/categories?post=7927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coincentral.com\/wp-json\/wp\/v2\/tags?post=7927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}