{"id":48766,"date":"2025-04-18T05:04:16","date_gmt":"2025-04-18T05:04:16","guid":{"rendered":"https:\/\/www.antiersolutions.com\/blogs\/?p=48766"},"modified":"2025-04-23T10:18:57","modified_gmt":"2025-04-23T10:18:57","slug":"based-rollups-explained-how-they-work-and-why-they-matter","status":"publish","type":"post","link":"https:\/\/www.antiersolutions.com\/blogs\/based-rollups-explained-how-they-work-and-why-they-matter\/","title":{"rendered":"Based Rollups Explained: How They Work and Why They Matter","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Blockchain scalability has remained a pressing concern in the crypto space ever since the technology&#8217;s inception. Several rollups were introduced, including ZK-Rollups, Optimistic Rollups, and now, <\/span>Based Rollups, to address this challenge. While Zero-Knowledge (ZK) Rollups and Optimistic Rollups have dominated the Layer 2 conversation, a new paradigm, Based Rollups<span style=\"font-weight: 400;\">, is gaining traction among crypto enthusiasts, investors, and other stakeholders. It\u2019s another scaling solution that has transformed the way rollups are designed, sequenced, and integrated into Ethereum\u2019s evolving architecture.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In this guide, we\u2019ll unpack the what, how, and why of<\/span> Based Rollups, from their architecture to their key benefits, in a deep enough way to keep blockchain enthusiasts intrigued. We\u2019ll also compare Based Rollups with existing L2 blockchain rollups and uncover the unique value they bring to Ethereum\u2019s roadmap.<\/p>\n<h2><strong>Introduction to Based Rollups<\/strong><\/h2>\n<p>Based Rollups, also known as L1-sequenced rollups, are a type of Layer 2 scaling solution for Ethereum that leverages the base layer (Layer 1) for transaction sequencing. Unlike traditional rollups, which employ their own sequencers, Based Rollups delegate the task of ordering transactions to the existing Ethereum validator network.<\/p>\n<p>The concept of Based Rollups has gone through several updates since it was first introduced by Vitalik Buterin in 2021 under the name \u2018Total Anarchy\u2019. This idea meant that anyone could submit a batch of transactions at any time. The actual term \u2018Based Rollup\u2019 and its proper definition were later introduced by Justin Drake, a researcher at the Ethereum Foundation, in 2023. His main goal was to make Layer 2 rollups more closely connected to Ethereum itself, so they could benefit from Ethereum\u2019s security, decentralization, and independence.<\/p>\n<h2><strong>Why Do We Need Based Rollups?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Ethereum has been a pioneer in decentralized computation, but it wasn\u2019t designed to handle the massive throughput required by modern DeFi, gaming, and social dApps on its own. Existing rollups, such as Optimistic Rollups and ZK-Rollups, attempt to bridge this scalability gap, but they come with their own set of trade-offs:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Optimistic Rollups rely on fraud proofs and long withdrawal delays.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ZK-Rollups offer faster finality but are computationally intensive and complex to implement.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Both types typically rely on separate sequencers or validator sets, introducing some level of centralization and MEV (Miner Extractable Value) misalignment with Ethereum.<\/span><\/li>\n<\/ul>\n<p>This is where Layer 2 Based Rollups step in, with a solution that promises to deliver the performance benefits of L2s while maintaining deep integration and alignment with Ethereum\u2019s core consensus and incentive model.<\/p>\n<p><span style=\"font-weight: 400;\">We need Based Rollups because they:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Eliminate the centralizing pressure of sequencers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Align rollup operation incentives with Ethereum validators.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Minimize MEV extraction inefficiencies across layers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduce trust assumptions and censorship risks.<\/span><\/li>\n<\/ul>\n<p>Layer 2 Based Rollups aim to simplify the L2 architecture while enhancing Ethereum&#8217;s security and neutrality.<\/p>\n<h2><strong>The Architecture of Based Rollup\u00a0<\/strong><\/h2>\n<p>To better understand Ethereum\u2019s new rollup model, it\u2019s important to first look at its architecture. Rollups are made up of four main layers: the settlement layer, data availability layer, consensus layer, and execution layer. These same layers also exist in Based Rollups. While the overall architecture remains the same, the approach used in based rollups is quite different, and this is what sets them apart from other rollups.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-48768\" src=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2.jpg\" alt=\"\" width=\"931\" height=\"794\" srcset=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2.jpg 931w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2-300x256.jpg 300w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2-768x655.jpg 768w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2-88x75.jpg 88w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2-704x600.jpg 704w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-2-480x409.jpg 480w\" sizes=\"auto, (max-width:767px) 480px, (max-width:931px) 100vw, 931px\" \/><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Settlement Layer<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This is where the rollup \u201csettles\u201d or finalizes its results. In Based Rollups, the results (proofs of what happened on Layer 2) are posted to Ethereum.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If something goes wrong on Layer 2, one can still trust Ethereum to have a verified record.\u00a0<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Data Availability Layer<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This layer ensures that all the data needed to rebuild or verify the rollup\u2019s transactions is available to everyone. All this data in the Based Rollups is also stored on Ethereum.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Anyone can read the block hashes posted to Ethereum and then access the full details of the transactions that happened in that block. So, the data is transparent and can be trusted.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Consensus Layer<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Blockchains have a separate system to agree on the order of transactions (called consensus). In Based Rollups, there is no separate consensus system. Instead, based rollups rely directly on Ethereum\u2019s consensus.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The order of transactions is decided by Ethereum\u2019s validators, so the rollup just follows Ethereum\u2019s lead.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Execution Layer<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This is the layer where the actual transaction processing happens. Based rollups run this part off-chain, on their own systems.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">While Ethereum helps with security and data, the rollup handles running the apps and calculating results itself.<\/span><\/p>\n<h2><strong>How do Based Rollups Work?<\/strong><\/h2>\n<p>Based rollups leverage Ethereum\u2019s native sequencer and validator set to integrate transactions directly into Layer 1 blocks. Here&#8217;s a high-level technical overview of how Based Rollups operate:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-48769\" src=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1.jpg\" alt=\"\" width=\"931\" height=\"796\" srcset=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1.jpg 931w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1-300x256.jpg 300w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1-768x657.jpg 768w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1-88x75.jpg 88w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1-702x600.jpg 702w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-1-480x410.jpg 480w\" sizes=\"auto, (max-width:767px) 480px, (max-width:931px) 100vw, 931px\" \/><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Transaction Bundling by L1 Searchers \/ L2 Builders<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">On Ethereum (L1), there are specialized agents known as block searchers or block builders. These agents scan the mempool (a waiting area where unconfirmed transactions live) for valid Layer 2 transactions. They organize these transactions into &#8220;bundles,\u201d basically, tightly packed groups of transactions that will later be inserted into Ethereum blocks.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Block Proposer Adds L2 Blocks into Bundles<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The Ethereum block proposer is the validator selected to propose the next block. The proposer includes multiple Layer 2 blocks in these bundles. These bundles now contain both Ethereum (L1) and rollup (L2) transactions in a packaged form.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>L1 Block Builder Constructs the Ethereum Block<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The block builder (a system that builds candidate blocks) takes regular Ethereum transactions and bundled layer 2 blocks (from step 2) and inserts them into a single Ethereum block.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Block Builder Sends the L1 Block to the Proposer<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The constructed L1 block (now with both L1 and L2 data) is sent back to the Ethereum proposer for final submission.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>The Proposer Submits the Block into Ethereum<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Finally, the proposer broadcasts the block to the Ethereum network. Once it\u2019s accepted, the L2 transaction data becomes part of Ethereum\u2019s canonical history. This means rollup activity is fully verifiable and finalized on Ethereum without a separate sequencer.<\/span><\/p>\n<h2><strong>The Core Benefits of Based Rollups\u00a0<\/strong><\/h2>\n<p>Based Rollups bring real, tangible benefits to Ethereum scaling. Let\u2019s explore the key advantages:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48770 size-full\" src=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-e1744952291593.jpg\" alt=\"\" width=\"931\" height=\"447\" srcset=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-e1744952291593.jpg 931w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-e1744952291593-300x144.jpg 300w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-e1744952291593-768x369.jpg 768w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-e1744952291593-150x72.jpg 150w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/based-rollups-image-e1744952291593-480x230.jpg 480w\" sizes=\"auto, (max-width:767px) 480px, (max-width:931px) 100vw, 931px\" \/><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Proposer-Based Sequencing<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Based Rollups outsource the role of sequencing to Ethereum proposers, which reduces infrastructure complexity. It removes the need for operating and securing a separate sequencer network or handling sequencer failures and misbehavior.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Maximum Ethereum Alignment<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">MEV captured at the rollup level can be routed directly to Ethereum validators, incentivizing honest behavior and reinforcing Ethereum\u2019s economic security. It makes Ethereum more resilient and helps avoid value leakage to off-chain actors.<\/span><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Increased Censorship Resistance<\/b><\/h4>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">With sequencing performed by Ethereum validators, who rotate regularly, no single party can censor transactions for long. Compare this to traditional rollups with centralized sequencers who can arbitrarily censor users or reorder transactions.<\/span><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Fairer MEV Distribution<\/b><\/h4>\n<\/li>\n<\/ul>\n<p>The MEV supply chain gets compressed. Rather than MEV being extracted by centralized L2 sequencers or external builders, it becomes part of the Ethereum proposer\u2019s block reward, which makes the entire system more transparent and equitable.<b><\/b><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Lower Latency &amp; Faster Inclusion<\/b><\/h4>\n<\/li>\n<\/ul>\n<p>Since Based Rollups leverage Ethereum\u2019s native block production, they eliminate the need to wait for Layer 2 sequencer consensus. It significantly enhances time-to-finality and delivers a smoother user experience, especially for latency-sensitive use cases like gaming, real-time finance, or high-frequency trading.<b><\/b><\/p>\n<ul>\n<li aria-level=\"1\">\n<h4><b>Modular Compatibility with Rollup Frameworks<\/b><\/h4>\n<\/li>\n<\/ul>\n<p>Based Rollups are implementation-agnostic. Whether you&#8217;re building a ZK-rollup, Optimistic Rollup, or even a Validium-style solution, the sequencing model can be integrated into existing frameworks like OP Stack or ZK Stack with some modifications.<\/p>\n<div class=\"btn-img-sec\">\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-43773 aligncenter blogimageCenter\" src=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/Based-rollups-CTA.jpg\" alt=\"CTA\" width=\"923\" height=\"185\" \/><\/p>\n<div class=\"btn-hire talkexpertt blue-button\" style=\"bottom: 45px; left: 470px;\">\r\n\t<a class=\"paoc-popup-click paoc-popup-cust-42906 paoc-popup-simple_link paoc-popup-link\" href=\"javascript:void(0);\">Schedule Free Demo<\/a>\r\n\r\n<\/div>\n<\/div>\n<h2><strong>Based Rollups vs. ZK-Rollups vs. Optimistic Rollups: A Comparison<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Let\u2019s dive deeper into how based rollups compare to traditional rollup types.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48773 size-full\" src=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684.jpg\" alt=\"\" width=\"1184\" height=\"1508\" srcset=\"https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684.jpg 1184w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-236x300.jpg 236w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-804x1024.jpg 804w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-768x978.jpg 768w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-59x75.jpg 59w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-960x1223.jpg 960w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-471x600.jpg 471w, https:\/\/www.antiersolutions.com\/blogs\/wp-content\/uploads\/2025\/04\/infographic-29-1-e1744952528684-480x611.jpg 480w\" sizes=\"auto, (max-width:767px) 480px, (max-width:1184px) 100vw, 1184px\" \/><\/p>\n<h2><strong>Conclusion<\/strong><\/h2>\n<p>Ethereum\u2019s rollup-centric roadmap faces numerous innovations, and Based Rollups is one of them that is shaping a future where scalability does not compromise decentralization or security. With the ease of integrating directly with Ethereum\u2019s base layer for transaction sequencing, based rollups eliminate a key bottleneck in Layer 2 design: the centralized sequencer. This one such approach positions Based Rollups as a next-gen solution for Ethereum-native applications. Whether deployed in finance, gaming, identity, or cross-chain communication, Based Rollups offer a solid architectural foundation for trustless scalability.<\/p>\n<p>While still early in adoption, the concept is gaining traction among researchers, developers, and infrastructure providers alike. Protocols like Espresso, OP Stack integrations, and modular rollup-as-a-service<span style=\"font-weight: 400;\"> providers are already experimenting with variants of Based Rollups. No doubt, it\u2019s high time to bet on Based Rollups in 2025. Partner with a reliable <\/span><a href=\"https:\/\/www.antiersolutions.com\/blockchain-development-services\/\" target=\"_blank\" rel=\"noopener\"><b>blockchain development company<\/b><\/a><span style=\"font-weight: 400;\">, Antier, to leverage <\/span>Base L2 sequencer<span style=\"font-weight: 400;\"> and rollup architecture for enhanced scalability, security, and decentralization.<\/span><\/p>\n<p><b><i>Connect with us today for expert blockchain assistance!\u00a0<\/i><\/b><\/p>\n<p>&nbsp;<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Blockchain scalability has remained a pressing concern in the crypto space ever<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":48767,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[5232,5231,5233,400,4343],"class_list":["post-48766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blockchain","tag-base-l2-sequencer","tag-based-rollups","tag-layer-2-based-rollups","tag-layer-2-scaling-solutions","tag-rollup-as-a-service"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Based Rollups and Their Role in Blockchain Scalability<\/title>\n<meta name=\"description\" content=\"Get a complete overview of Based Rollups in our latest blog. 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