{"id":107612,"date":"2023-08-09T21:43:46","date_gmt":"2023-08-09T21:43:46","guid":{"rendered":"https:\/\/www.dash.org\/?p=107612"},"modified":"2023-08-12T03:24:10","modified_gmt":"2023-08-12T03:24:10","slug":"dash-platform-data-contracts","status":"publish","type":"post","link":"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/","title":{"rendered":"Dash Platform Data Contracts"},"content":{"rendered":"<p class=\"c5\">Everyone in Web3 already knows of\u00a0<span class=\"c21\">smart contracts<\/span>,\u00a0the groundbreaking innovation of Ethereum that popularized the concept of a\u00a0dapp. However, few are aware of Dash Platform\u2019s new supplement to smart contracts that will make dapp development more accessible to the masses:\u00a0<span class=\"c21\">data contracts<\/span><span class=\"c3\">.<\/span><\/p>\n<p class=\"c5\">Data contracts are a powerful tool already used widely across the Web2 data services\u00a0landscape due to their many benefits to user and developer experience. They\u2019re relatively simple JSON schemas that define the structures of data a dapp can store. Utilizing them in Dash Platform allows us to take advantage of their traditional benefits\u00a0while\u00a0also enabling Web2 developers to store their app data on a decentralized Web3 platform without needing to\u00a0learn a smart<span class=\"c3\">\u00a0contract language like Solidity. Rather, they can easily do so just by using constructs they\u2019re already familiar with.<\/span><\/p>\n<p class=\"c5\">In addition to greater accessibility and smoother user experience, data contracts also enable a variety of other useful features, such as easy indexing, versioning, and\u00a0built-in documentation. Ultimately, they will assist in the cultivation of a diverse ecosystem of Dash-based dapps, and more widespread adoption for crypto as a whole.<\/p>\n<p class=\"c5\">This article accompanies the release of\u00a0<span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/dashpay.io&amp;sa=D&amp;source=editors&amp;ust=1691606746570346&amp;usg=AOvVaw3c0xu5jJd_-LQLYWRb44Rv\">dashpay.io<\/a><\/span><span class=\"c3\">, a web app where users can automatically generate a data contract based on descriptions of their intended dapp using AI. We will begin by walking through the high-level architecture and applications of data contracts before going back and diving deeper into the architecture details.<\/span><\/p>\n<h3 id=\"h.q3pdx1n47l4d\" class=\"c23\"><span class=\"c24\">Application<\/span><\/h3>\n<p class=\"c5\">At a high level, a Dash Platform data contract is a JSON schema that defines the structures of the data a dapp will store. It\u00a0defines the\u00a0<span class=\"c22\">allowed properties<\/span>, such as \u201ccity\u201d or \u201ccuisine\u201d for a restaurant dapp, the\u00a0<span class=\"c22\">validation logic<\/span>, such as the \u201cmaxLength\u201d of a string property, and the\u00a0<span class=\"c22\">indexes<\/span><span class=\"c3\">\u00a0created on the properties. Developers must submit their data contracts to Platform for system-level validation before the users of their dapps may submit documents to their data contracts for dapp-level validation. This ensures that the dapp data will play nicely with the rest of the system while giving developers control over the structure and types of data that can be submitted to their dapps. Data contracts are therefore useful for a number of reasons beyond just enabling an easy transition from Web2 to Web3:<\/span><\/p>\n<ul class=\"c13 lst-kix_a9vll59dc27d-0 start\">\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Interoperability<\/span><span class=\"c3\">. First and foremost, data contracts enable the validations that ensure smooth interoperability between user data, dapps, and the underlying platform, ultimately resulting in better user and developer experience. Also, by standardizing the way data is stored in Dash Platform, other platforms can easily gain interoperability in the future by adopting the same format.<\/span><\/li>\n<\/ul>\n<ul class=\"c13 lst-kix_a9vll59dc27d-0\">\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Simplicity<\/span><span class=\"c3\">. All data contracts in Dash Platform follow the same general guidelines and format, and are very easy to understand compared to smart contracts. Once you gain an initial understanding of them, figuring out how to interact with another developer\u2019s dapp or creating a new data contract is rather intuitive.<\/span><\/li>\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Documentation<\/span><span class=\"c3\">. Building upon that, data contracts serve as a form of documentation for a dapp. Users should be able to view a contract\u2019s schema and get a basic understanding of what the dapp does and how, especially if the comment and description sections are utilized.<\/span><\/li>\n<\/ul>\n<ul class=\"c13 lst-kix_r1b5v9d9u2n3-0 start\">\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Indexing<\/span>. Data contracts allow developers to easily index properties simply by specifying them in the schema, whereas with today\u2019s smart contract languages, the process is much more involved and usually requires multiple data structures. This functionality is made possible thanks to Dash Platform\u2019s\u00a0<span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/www.grovedb.org\/&amp;sa=D&amp;source=editors&amp;ust=1691606746571713&amp;usg=AOvVaw0mIGY7xQUcACVtC80ApKM_\">GroveDB<\/a><\/span><span class=\"c3\">, the first database to enable verifiable queries on secondary indexes.<\/span><\/li>\n<\/ul>\n<ul class=\"c13 lst-kix_a9vll59dc27d-0\">\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Versioning<\/span><span class=\"c3\">. Data contracts include versioning information so they may be updated as the needs of the dapp evolve over time &#8211; while maintaining backward compatibility.<\/span><\/li>\n<\/ul>\n<p class=\"c5\"><span class=\"c3\">While smart contracts, which are a top priority following the launch of v1, will synergize with data contracts to enable a much wider range of capabilities for dapps on Dash Platform, there are still many possibilities with data contracts alone. Dash Incubator developer Pshenmic has provided us with a few examples he\u2019s personally excited about:<\/span><\/p>\n<ul class=\"c13 lst-kix_q68w1nd9sdhh-0 start\">\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Web3 data persistence<\/span><span class=\"c3\">. If an application does not need heavy read\/write operations, it can use Dash Platform\u2019s data contracts as a persistent storage with proofs and indexing. Users can store user accounts, settings, or whatever with the benefits of a decentralized Web3 platform. Dash Platform also gives the option of immutable storage for those who want data permanency.<\/span><\/li>\n<\/ul>\n<ul class=\"c13 lst-kix_q68w1nd9sdhh-0\">\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Chat rooms<\/span>. Users can post, edit, or delete messages as documents on a chat room data contract. There\u2019s actually an application that already does this:\u00a0<span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/dashshoutout.com&amp;sa=D&amp;source=editors&amp;ust=1691606746572469&amp;usg=AOvVaw1A7eysDsg0-_x4S3F6n7DS\">https:\/\/dashshoutout.com<\/a><\/span><span class=\"c3\">.<\/span><\/li>\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Order applications<\/span><span class=\"c3\">. Users can submit a document to a restaurant\u2019s data contract with their desired meal order. The restaurant\u2019s backend will then be able to pick it up and process their order.<\/span><\/li>\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Signatures repository<\/span>. Users can upload their public keys to a data contract and a counterparty will be able to pull them without relying on any centralized storage. For example, consider SSH\u00a0pubkeys<span class=\"c3\">. Remote servers will be able to easily give anyone access using the Identity or DPNS username uploaded to their (or some other) data contract.<\/span><\/li>\n<li class=\"c5 c7 li-bullet-0\"><span class=\"c22\">Oracles<\/span><span class=\"c3\">. There is a growing demand in the crypto payment process for shops and other merchants. As a site owner, you often don\u2019t want to deal with payment processing development, and instead you just delegate it to the centralized APIs like Coingate. With Dash Platform, users could upload addresses that they would like to listen to in the data contract (in this case the customers\u2019 addresses), and the oracle backend will pick it up and start listening in on these. As the payment arrives to the ledger, the oracle backend will be able to publish transaction details to Platform. Since all the data is published on-chain, oracle backends are 100% verifiable.<\/span><\/li>\n<\/ul>\n<p class=\"c5\">If you\u2019re interested in reading more about possible applications that data contracts enable on Dash Platform, check out this awesome 2021 article from Hackernoon:\u00a0<span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/hackernoon.com\/building-dapps-on-dash-an-interview-with-readme-ay3a342g&amp;sa=D&amp;source=editors&amp;ust=1691606746573364&amp;usg=AOvVaw2XeS0-IsxM3w3OQ3YV2XEo\">Building dapps On Dash: An Interview With readme<\/a><\/span><span class=\"c3\">.<\/span><\/p>\n<p class=\"c5\"><span class=\"c3\">Now, onto the architecture.<\/span><\/p>\n<h3 id=\"h.cjj48i2im3x2\" class=\"c23\">Architecture<\/h3>\n<p class=\"c5\">As already stated above, a Dash Platform data contract is a JSON schema that defines the structures of the data a dapp can store. It\u00a0defines the\u00a0allowed properties,\u00a0the\u00a0validation logic, and the\u00a0indexes<span class=\"c3\">\u00a0created on the properties.<\/span><\/p>\n<p class=\"c5\">A Dash Platform data contract\u00a0JSON\u00a0schema must define at least one\u00a0<span class=\"c21\">document type<\/span>. A document type defines a type of\u00a0<span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/en.wikipedia.org\/wiki\/Document-oriented_database%23Documents&amp;sa=D&amp;source=editors&amp;ust=1691606746574220&amp;usg=AOvVaw2xemKXd_qQTGZBD36nu0DU\">document<\/a><\/span>\u00a0that can be submitted to a data contract. They require three fields:\u00a0<code>type<\/code>,\u00a0<code>properties<\/code>, and\u00a0<code>additionalProperties<\/code>, and support two optional fields:\u00a0<code>indices<\/code>\u00a0and\u00a0<code>required<\/code>. A data contract with one document type,\u00a0nft, that employs all five fields, might look like this, for example:<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-ruby\" data-lang=\"JSON\"><code>{\r\n  \"nft\": {\r\n   \"type\": \"object\",\r\n   \"properties\": {\r\n     \"name\": {\r\n       \"type\": \"string\",\r\n       \"description\": \"Name of the NFT token\",\r\n       \"maxLength\": 63\r\n     },\r\n     \"description\": {\r\n       \"type\": \"string\",\r\n       \"description\": \"Description of the NFT token\",\r\n       \"maxLength\": 256\r\n     },\r\n     \"imageUrl\": {\r\n       \"type\": \"string\",\r\n       \"description\": \"URL of the image associated with the NFT token\",\r\n       \"maxLength\": 2048,\r\n       \"format\": \"uri\"\r\n     },\r\n     \"imageHash\": {\r\n       \"type\": \"array\",\r\n       \"description\": \"SHA256 hash of the bytes of the image specified by tokenImageUrl\",\r\n       \"byteArray\": true,\r\n       \"minItems\": 32,\r\n       \"maxItems\": 32\r\n     },\r\n     \"imageFingerprint\": {\r\n       \"type\": \"array\",\r\n       \"description\": \"dHash the image specified by tokenImageUrl\",\r\n       \"byteArray\": true,\r\n       \"minItems\": 8,\r\n       \"maxItems\": 8\r\n     },\r\n     \"price\": {\r\n       \"type\": \"number\",\r\n       \"description\": \"Price of the NFT token in Dash\",\r\n       \"minimum\": 0\r\n     },\r\n     \"quantity\": {\r\n       \"type\": \"integer\",\r\n       \"description\": \"Number of tokens in circulation\",\r\n       \"minimum\": 0\r\n     },\r\n     \"metadata\": {\r\n       \"type\": \"array\",\r\n       \"description\": \"Any additional metadata associated with the NFT token\",\r\n       \"byteArray\": true,\r\n       \"minItems\": 0,\r\n       \"maxItems\": 2048\r\n     }\r\n   },\r\n   \"indices\": [\r\n      {\r\n       \"name\": \"price\",\r\n       \"properties\": [\r\n         {\r\n           \"price\": \"asc\"\r\n         }\r\n       ]\r\n     },\r\n      {\r\n       \"name\": \"quantity\",\r\n       \"properties\": [\r\n         {\r\n           \"quantity\": \"asc\"\r\n         }\r\n       ]\r\n     },\r\n      {\r\n       \"name\": \"priceAndQuantity\",\r\n       \"properties\": [\r\n          {\r\n           \"price\": \"asc\"\r\n         },\r\n         {\r\n           \"quantity\": \"asc\"\r\n         }\r\n       ]\r\n     }\r\n   ],\r\n   \"required\": [\r\n     \"name\",\r\n     \"price\",\r\n     \"quantity\"\r\n   ],\r\n   \"additionalProperties\": false\r\n }\r\n}<\/code><\/pre>\n<\/div>\n<p><em>Figure 1: A Dash Platform data contract with one document type, \u201cnft\u201d.<\/em><\/p>\n<p><span>Document types<\/span><span>\u00a0in Dash Platform are JSON objects, and therefore must specify\u00a0<\/span><code>\"type\":\"object\"<\/code>. They must also specify<span>\u00a0a set of\u00a0<\/span><code>properties<\/code><span>\u00a0containing\u00a0<\/span><span>at least one property<\/span><span>,\u00a0<\/span><span>and\u00a0<\/span><code>\"additionalProperties\":false<\/code><span>. Optionally, they may also include a list of\u00a0<\/span><code>indices<\/code><span>\u00a0and a list of\u00a0<\/span><code>required<\/code><span>\u00a0properties. Here is an example of a valid\u00a0<\/span><code>nft<\/code><span class=\"c3\">\u00a0document (with some truncated fields) that could be submitted to the above data contract:<\/span><\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-json\" data-lang=\"JSON\"><code><span class=\"c8\">{\r\n\u00a0<\/span><span class=\"c0\">\"name\"<\/span><span class=\"c8\">:<span>\u00a0<\/span><\/span><span class=\"c11\">\"Dash Cat 001\"<\/span><span class=\"c8\">,\r\n\u00a0<\/span><span class=\"c0\">\"description\"<\/span><span class=\"c8\">:<span>\u00a0<\/span><\/span><span class=\"c11\">\"The original Dash Cat. Meow.\"<\/span><span class=\"c8\">,\r\n\u00a0<\/span><span class=\"c0\">\"imageUrl\"<\/span><span class=\"c8\">:<span>\u00a0<\/span><\/span><span class=\"c11\">\"https:\/\/ipfs.io\/ipfs\/Qme7ss3ARVgxv6rXqVPiikL\u2026\"<\/span><span class=\"c8\">,\r\n\u00a0<\/span><span class=\"c0\">\"imageHash\"<\/span><span class=\"c8\">:<span>\u00a0<\/span><\/span><span class=\"c11\">[0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, \u2026]<\/span><span class=\"c8\">,\r\n\u00a0<\/span><span class=\"c0\">\"price\"<\/span><span class=\"c8\">:<span>\u00a0<\/span><\/span><span class=\"c0\">50<\/span><span class=\"c8\">,\r\n\u00a0<\/span><span class=\"c0\">\"quantity\"<\/span><span class=\"c8\">:<span>\u00a0<\/span><\/span><span class=\"c0\">1<\/span><span class=\"c8\">\r\n}<\/span><\/code><\/pre>\n<\/div>\n<p><em>Figure 2: A valid document (with some truncated fields) that could be submitted to the data contract in Figure 1.<\/em><\/p>\n<p><span>In this document, all the properties listed in the data contract\u2019s\u00a0<\/span><code>required<\/code><span>\u00a0field are present. There are no\u00a0<\/span><code>additionalProperties<\/code><span>\u00a0(properties that aren\u2019t defined in the contract\u2019s\u00a0<\/span><code>properties<\/code><span>\u00a0set), and each property value conforms to that individual property\u2019s validation rules (for example,\u00a0<\/span><code>imageUrl<\/code><span>\u2018s length is under the set\u00a0<\/span><code>maxLength<\/code><span>\u00a0of 2048, and is of URI\u00a0<\/span><span class=\"c0\">format<\/span><span>). References to this document are automatically stored in the corresponding indexes defined in\u00a0<\/span><code>indices<\/code><span class=\"c3\">, while the document itself is serialized and stored in the contract\u2019s primary index.<\/span><\/p>\n<h3 class=\"c27 c32\" id=\"h.j1zupcxkan1s\"><span>System Properties<\/span><\/h3>\n<p class=\"c5\"><span>In addition to the user-defined properties, like\u00a0<\/span><code>name<\/code><span>\u00a0and\u00a0<\/span><code>price<\/code><span>, there are some additional \u201csystem properties\u201d that data contracts may include in\u00a0<\/span><code>indices<\/code><span>. These are $ownerId, $createdAt, and $updatedAt.\u00a0<\/span><span>$createdAt and $updatedAt<\/span><span>\u00a0may also be included in the list of\u00a0<\/span><code>required<\/code><span>\u00a0properties, as they are optional when submitting a document at the system level, but $ownerId is always required, so it\u2019s not allowed in the user-defined\u00a0<\/span><code>required<\/code><span class=\"c3\">\u00a0list.<\/span><\/p>\n<p class=\"c5\"><span>See the\u00a0<\/span><span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/github.com\/dashpay\/platform\/blob\/v0.25-dev\/packages\/dpns-contract\/schema\/dpns-contract-documents.json&amp;sa=D&amp;source=editors&amp;ust=1691606746583753&amp;usg=AOvVaw1qlgXEGUeuwbNPVPL5WWQK\">DPNS<\/a><\/span><span>\u00a0and\u00a0<\/span><span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/github.com\/dashpay\/platform\/blob\/v0.25-dev\/packages\/dashpay-contract\/schema\/dashpay.schema.json&amp;sa=D&amp;source=editors&amp;ust=1691606746584014&amp;usg=AOvVaw3CuSesVuNNYQNJG_0Ey418\">Dashpay<\/a><\/span><span class=\"c3\">\u00a0data contracts for two real-world examples that utilize more than one document type.<\/span><\/p>\n<p class=\"c5\"><span>Before leaving off with Additional Architecture Details, which might be too involved for some readers, I\u2019ll wrap up now by saying you may also be interested in checking out the data contract\u00a0<\/span><span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/dashplatform.readme.io\/docs\/platform-protocol-reference-data-contract&amp;sa=D&amp;source=editors&amp;ust=1691606746584331&amp;usg=AOvVaw3_7nhS2VH1Noa6QtOniWcE\">documentation<\/a><\/span><span>\u00a0for further information, and as always, the community, including Dash Core Group and myself, is available to field questions and suggestions on the\u00a0<\/span><span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/discord.gg\/juCqsYgvuB&amp;sa=D&amp;source=editors&amp;ust=1691606746584483&amp;usg=AOvVaw13IBapx6ZKeziftBlEJOZf\">Dash Discord<\/a><\/span><span class=\"c3\">.<\/span><\/p>\n<p class=\"c5\"><span>Finally, don\u2019t forget to check out\u00a0<\/span><span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/dashpay.io&amp;sa=D&amp;source=editors&amp;ust=1691606746584720&amp;usg=AOvVaw1v5r9tRTwr3GzY3AelaKya\">dashpay.io<\/a><\/span><span>\u00a0(Github repo\u00a0<\/span><span class=\"c10\"><a class=\"c26\" href=\"https:\/\/www.google.com\/url?q=https:\/\/github.com\/dashpay\/data-contract-creator&amp;sa=D&amp;source=editors&amp;ust=1691606746584867&amp;usg=AOvVaw0yL99MdcXP_QyJuCM2nzFa\">here<\/a><\/span><span class=\"c3\">), where you can use AI to automatically generate a data contract based on a description of your intended dapp, use a dynamic form to tweak it to perfection, and save time and money by validating your data contract before submitting it to Dash Platform.<\/span><\/p>\n<h2 class=\"c23\" id=\"h.yzacagvlb8v\"><span class=\"c24\">Additional Architecture Details<\/span><\/h2>\n<h3 class=\"c27\" id=\"h.pybwevledn9\"><span class=\"c30\">Indices<\/span><\/h3>\n<p class=\"c5\"><span>The data contract in Figure 1 defines three indices:\u00a0<\/span><code>price<\/code>, <code>quantity<\/code><span>, and\u00a0<\/span><code>priceAndQuantity<\/code><span>. When a document is\u00a0<\/span><span>submitted to the data contract<\/span><span>, the full serialized document will go into the\u00a0<\/span><code>primary index<\/code><span>, which is a subtree with key 0 in the \u201cnft\u201d tree, and references to the document will automatically be inserted into the three\u00a0<\/span><code>secondary index<\/code><span class=\"c3\">\u00a0subtrees. This is illustrated in the diagram below, where solid lines are actual parent-child relationships within a tree, and the dashed lines point to the node where the root hash of that tree is stored.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1999\" height=\"1310\" src=\"https:\/\/media.dash.org\/wp-content\/uploads\/image2-6.png\" alt=\"\" class=\"size-full wp-image-107640 aligncenter\" srcset=\"https:\/\/media.dash.org\/wp-content\/uploads\/image2-6.png 1999w, https:\/\/media.dash.org\/wp-content\/uploads\/image2-6-300x197.png 300w, https:\/\/media.dash.org\/wp-content\/uploads\/image2-6-1024x671.png 1024w, https:\/\/media.dash.org\/wp-content\/uploads\/image2-6-768x503.png 768w, https:\/\/media.dash.org\/wp-content\/uploads\/image2-6-1536x1007.png 1536w\" sizes=\"(max-width: 1999px) 100vw, 1999px\" \/><\/p>\n<p><em>Figure 3: The structure of a document type tree in Dash Platform.<\/em><\/p>\n<h3 class=\"c27 c32\" id=\"h.udoyikwj4y2e\"><span class=\"c30\">Contract Documents Tree<\/span><\/h3>\n<p class=\"c5\"><span class=\"c3\">In the GroveDB structure of Dash Platform, all data contracts and their corresponding documents are stored in the Contract Documents tree, which is a subtree of the Root tree. The diagram below shows the path from the Root tree to the \u201cnft\u201d document type tree shown in the diagram above.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1898\" height=\"630\" src=\"https:\/\/media.dash.org\/wp-content\/uploads\/image1-10.png\" alt=\"\" class=\"size-full wp-image-107619 aligncenter\" srcset=\"https:\/\/media.dash.org\/wp-content\/uploads\/image1-10.png 1898w, https:\/\/media.dash.org\/wp-content\/uploads\/image1-10-300x100.png 300w, https:\/\/media.dash.org\/wp-content\/uploads\/image1-10-1024x340.png 1024w, https:\/\/media.dash.org\/wp-content\/uploads\/image1-10-768x255.png 768w, https:\/\/media.dash.org\/wp-content\/uploads\/image1-10-1536x510.png 1536w\" sizes=\"(max-width: 1898px) 100vw, 1898px\" \/><\/p>\n<p><em>Figure 4: The path from the Dash Platform Root Tree to the \u201cnft\u201d document type tree from Figure 3.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"Everyone in Web3 already knows of\u00a0smart contracts,\u00a0the groundbreaking innovation of Ethereum that popularized the concept of a\u00a0dapp. However, few are aware of Dash Platform\u2019s new supplement to smart contracts that will make dapp development more accessible to the masses:\u00a0data contracts. Data contracts are a powerful tool already used widely across the Web2 data services\u00a0landscape due&#8230;","protected":false},"author":70,"featured_media":107591,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[290],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dash Platform Data Contracts - Dash<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dash Platform Data Contracts - Dash\" \/>\n<meta property=\"og:description\" content=\"Everyone in Web3 already knows of\u00a0smart contracts,\u00a0the groundbreaking innovation of Ethereum that popularized the concept of a\u00a0dapp. However, few are aware of Dash Platform\u2019s new supplement to smart contracts that will make dapp development more accessible to the masses:\u00a0data contracts. Data contracts are a powerful tool already used widely across the Web2 data services\u00a0landscape due...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/\" \/>\n<meta property=\"og:site_name\" content=\"Dash\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DashPay\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-09T21:43:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-08-12T03:24:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/media.dash.org\/wp-content\/uploads\/Cover-Data-Contracts.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1990\" \/>\n\t<meta property=\"og:image:height\" content=\"932\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Paul DeLucia\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@dashpay\" \/>\n<meta name=\"twitter:site\" content=\"@dashpay\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Paul DeLucia\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/\"},\"author\":{\"name\":\"Paul DeLucia\",\"@id\":\"https:\/\/www.dash.org\/#\/schema\/person\/4c879ecb85a12c1b2af3532bedcb5c2c\"},\"headline\":\"Dash Platform Data Contracts\",\"datePublished\":\"2023-08-09T21:43:46+00:00\",\"dateModified\":\"2023-08-12T03:24:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/\"},\"wordCount\":1633,\"publisher\":{\"@id\":\"https:\/\/www.dash.org\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/media.dash.org\/wp-content\/uploads\/Cover-Data-Contracts.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/\",\"url\":\"https:\/\/www.dash.org\/blog\/dash-platform-data-contracts\/\",\"name\":\"Dash Platform Data Contracts - 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