{"id":49060,"date":"2025-08-26T18:42:28","date_gmt":"2025-08-26T15:42:28","guid":{"rendered":"https:\/\/coinengineer.net\/blog\/?p=49060"},"modified":"2025-08-26T18:42:15","modified_gmt":"2025-08-26T15:42:15","slug":"what-is-bnb-attestation-service-bas","status":"publish","type":"post","link":"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/","title":{"rendered":"What is BNB Attestation Service (BAS)?"},"content":{"rendered":"<p>In the blockchain world, trust, identity, and data ownership are becoming increasingly important. Especially in DeFi, RWA (real-world assets), and AI-based applications, the verifiability of users\u2019 identity information is a critical need. This is where <strong data-start=\"253\" data-end=\"286\">BAS (BNB Attestation Service)<\/strong> stands out as a universal identity and reputation layer within the BNB Chain ecosystem.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-49061 aligncenter\" src=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-43-54-300x99.jpg\" alt=\"\" width=\"1061\" height=\"350\" srcset=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-43-54-300x99.jpg 300w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-43-54-1024x338.jpg 1024w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-43-54-768x253.jpg 768w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-43-54.jpg 1280w\" sizes=\"auto, (max-width: 1061px) 100vw, 1061px\" \/><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Positioning_of_BAS\" title=\"Positioning of BAS\">Positioning of BAS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Technology_and_Architecture\" title=\"Technology and Architecture\">Technology and Architecture<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Relationship_with_Greenfield\" title=\"Relationship with Greenfield\">Relationship with Greenfield<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Ecosystem_Role_and_Scale\" title=\"Ecosystem Role and Scale\">Ecosystem Role and Scale<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Token_Economics\" title=\"Token Economics\">Token Economics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Ecosystem_Partnerships\" title=\"Ecosystem Partnerships\">Ecosystem Partnerships<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Roadmap_and_Future_Plans\" title=\"Roadmap and Future Plans\">Roadmap and Future Plans<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Key_Takeaways\" title=\"Key Takeaways\">Key Takeaways<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Where_to_Buy_BNB_Attestation_Service_BAS\" title=\"Where to Buy BNB Attestation Service (BAS)?\">Where to Buy BNB Attestation Service (BAS)?<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#KuCoin\" title=\"KuCoin\">KuCoin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Bitget\" title=\"Bitget\">Bitget<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/coinengineer.net\/blog\/what-is-bnb-attestation-service-bas\/#Binance_Futures\" title=\"Binance Futures\">Binance Futures<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Positioning_of_BAS\"><\/span>Positioning of BAS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>BAS operates with both on-chain and off-chain attestation mechanisms.<\/p>\n<ul>\n<li>On-chain mode: Transparent verification records visible to everyone.<\/li>\n<li>Off-chain mode: Access-controlled, user-specific data management via Greenfield integration.<\/li>\n<\/ul>\n<p>This structure allows BAS to provide a reliable data verification infrastructure not only for Web3 but also for diverse use cases such as RWA, regulation-compliant DeFi, and AI agents.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-49062 aligncenter\" src=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-45-17-300x239.jpg\" alt=\"\" width=\"838\" height=\"668\" srcset=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-45-17-300x239.jpg 300w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-45-17.jpg 767w\" sizes=\"auto, (max-width: 838px) 100vw, 838px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Technology_and_Architecture\"><\/span>Technology and Architecture<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Key concepts offered by BAS include:<\/p>\n<ul>\n<li>Schema: Defines how data will be structured and processed.<\/li>\n<li>Resolver: Implements more complex verification logic.<\/li>\n<li>Access Control: Determines who owns which data and who can read it.<\/li>\n<\/ul>\n<p>Additionally, BAS provides SDK and GraphQL API support for developers, making dApp integration easier and ensuring that data flow is secure and modular.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-49063 aligncenter\" src=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-46-39-300x178.jpg\" alt=\"\" width=\"987\" height=\"586\" srcset=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-46-39-300x178.jpg 300w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-46-39-768x457.jpg 768w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-46-39.jpg 817w\" sizes=\"auto, (max-width: 987px) 100vw, 987px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Relationship_with_Greenfield\"><\/span>Relationship with Greenfield<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>BAS leverages BNB Greenfield for off-chain verification and storage, allowing:<\/p>\n<ul>\n<li>Users to retain ownership of their data,<\/li>\n<li>Selective verification when needed,<\/li>\n<li>Data to remain private and not unnecessarily public.<\/li>\n<\/ul>\n<p>This approach bridges Web2 and Web3, advancing the concept of user-owned data.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ecosystem_Role_and_Scale\"><\/span>Ecosystem Role and Scale<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>According to official data, BAS currently supports:<\/p>\n<ul>\n<li>40M+ attestations,<\/li>\n<li>2.5M+ addresses,<\/li>\n<li>100+ ecosystem partners.<\/li>\n<\/ul>\n<p>These figures demonstrate that BAS is not just a technical infrastructure but has become a core verification and reputation layer for BNB Chain. With tools like BNB Passport and Explorer, users can reuse their identity and reputation across multiple applications.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-49064 aligncenter\" src=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-48-12-300x146.jpg\" alt=\"\" width=\"1031\" height=\"502\" srcset=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-48-12-300x146.jpg 300w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-48-12-1024x498.jpg 1024w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-48-12-768x373.jpg 768w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-48-12.jpg 1240w\" sizes=\"auto, (max-width: 1031px) 100vw, 1031px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Token_Economics\"><\/span>Token Economics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>According to CoinMarketCap, the BAS token has:<\/p>\n<ul>\n<li>Maximum Supply: 10 billion<\/li>\n<li>TGE and Distribution Details: Partial information available as of July 2025<\/li>\n<\/ul>\n<p>Important Note: Official disclosures are limited. Investment or usage decisions should always rely on official announcements, contract addresses, and technical documentation.<\/p>\n<p>Potential Ways the Token Could Capture Value:<\/p>\n<ul>\n<li>Usage-driven demand: More integrations and attestation calls.<\/li>\n<li>Ecosystem engagement: Through BNB Passport, task systems, and multi-dApp usage.<\/li>\n<li>Compliance and privacy needs: For RWA and institutional DeFi solutions.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-49065 aligncenter\" src=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-49-48-300x170.jpg\" alt=\"\" width=\"958\" height=\"543\" srcset=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-49-48-300x170.jpg 300w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-49-48.jpg 680w\" sizes=\"auto, (max-width: 958px) 100vw, 958px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ecosystem_Partnerships\"><\/span>Ecosystem Partnerships<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>BAS has received BNB Grants and participated in the MVB incubation program. It is also connected with the DataFi\/RIDO team.<\/p>\n<p>These collaborations enable:<\/p>\n<ul>\n<li>Establishing Web2 \u2194 Web3 data standards,<\/li>\n<li>Implementing task \u2192 reputation \u2192 identity flows,<\/li>\n<li>Developing enterprise-level data verification services.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-49067 aligncenter\" src=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-51-19-300x136.jpg\" alt=\"\" width=\"1004\" height=\"455\" srcset=\"https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-51-19-300x136.jpg 300w, https:\/\/coinengineer.net\/blog\/wp-content\/uploads\/2025\/08\/photo_2025-08-26_18-51-19.jpg 559w\" sizes=\"auto, (max-width: 1004px) 100vw, 1004px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Roadmap_and_Future_Plans\"><\/span>Roadmap and Future Plans<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>BAS\u2019s development progresses along three main tracks:<\/p>\n<ul>\n<li>Standards: Schema\/resolver enhancements and revocation mechanisms.<\/li>\n<li>Productization: Development of BNB Passport, Explorer, and task entry points.<\/li>\n<li>Ecosystem: Ready-made template integrations for DeFi, RWA, and AI applications.<\/li>\n<\/ul>\n<p>Additionally, the SDK and GraphQL documentation for developers are planned to be expanded.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span>Key Takeaways<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>BAS serves as the universal identity and verification infrastructure for BNB Chain.<\/li>\n<li>Its dual-mode structure (on-chain + off-chain) ensures both transparency and privacy.<\/li>\n<li>Integration with Greenfield gives users full control over their data.<\/li>\n<li>As the token economy is still developing, official announcements are critical for investment or usage decisions.<\/li>\n<li>The ecosystem size, partnerships, and incubation programs highlight BAS\u2019s strategic importance in the Web3 space.<\/li>\n<\/ul>\n<p>Official Links:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.bnbattest.io\/\">Websitesi<\/a><\/li>\n<li><a href=\"https:\/\/x.com\/BASCAN_io\">X (Twitter)<\/a><\/li>\n<li><a href=\"https:\/\/doc.bascan.io\/\">Whitepaper<\/a><\/li>\n<\/ul>\n<h2 data-start=\"0\" data-end=\"49\"><span class=\"ez-toc-section\" id=\"Where_to_Buy_BNB_Attestation_Service_BAS\"><\/span>Where to Buy BNB Attestation Service (BAS)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4 data-start=\"223\" data-end=\"241\"><span class=\"ez-toc-section\" id=\"KuCoin\"><\/span><a href=\"https:\/\/www.kucoin.com\/ucenter\/signup?rcode=24egb\">KuCoin<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h4 data-start=\"223\" data-end=\"241\"><span class=\"ez-toc-section\" id=\"Bitget\"><\/span><a href=\"https:\/\/partner.bitget.com\/bg\/JVJzUr\">Bitget<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h4 data-start=\"223\" data-end=\"241\"><span class=\"ez-toc-section\" id=\"Binance_Futures\"><\/span><a href=\"https:\/\/www.binance.com\/futures\/ref\/coinmuhendisi\">Binance Futures<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<div>\n<div>\n<p>Also, in the comment section, you can freely share your comments and opinions about the topic. Additionally, don\u2019t forget to follow us on <a href=\"https:\/\/t.me\/coinengineernews\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Telegram<\/strong><\/a>,\u00a0<a href=\"https:\/\/www.youtube.com\/@CoinEngineer\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>YouTube<\/strong><\/a>\u00a0and\u00a0<a href=\"https:\/\/twitter.com\/coinengineers\"><strong>Twitter<\/strong><\/a>\u00a0for the latest news and updates.<\/p>\n<\/div>\n<\/div>\n<div class=\"blog-share text-center\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In the blockchain world, trust, identity, and data ownership are becoming increasingly important. Especially in DeFi, RWA (real-world assets), and AI-based applications, the verifiability of users\u2019 identity information is a critical need. This is where BAS (BNB Attestation Service) stands out as a universal identity and reputation layer within the BNB Chain ecosystem. Positioning of<\/p>\n","protected":false},"author":37,"featured_media":49069,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,657,2],"tags":[236,563,192,393,2883,5384,840,847,336,5760],"class_list":["post-49060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-crypto-news","category-en","category-news","tag-altcoin","tag-altcoins","tag-blockchain","tag-crypto","tag-crypto-analysis","tag-crypto-investment","tag-crypto-market","tag-crypto-news","tag-cryptocurrencies","tag-digital-assets"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is BNB Attestation Service (BAS)?<\/title>\n<meta name=\"description\" content=\"In the blockchain world, trust, identity, and data ownership are becoming increasingly important. 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