{"id":596004,"date":"2026-05-08T02:04:04","date_gmt":"2026-05-08T02:04:04","guid":{"rendered":"https:\/\/Blockchain.News\/wiki\/bitcoin-layer-overview-of-stacksmerlin-chain"},"modified":"2026-05-08T02:04:04","modified_gmt":"2026-05-08T02:04:04","slug":"bitcoin-layer-2-an-overview-of-stacks-merlin-chain-and-more","status":"publish","type":"post","link":"https:\/\/e-bitco.in\/index.php\/2026\/05\/08\/bitcoin-layer-2-an-overview-of-stacks-merlin-chain-and-more\/","title":{"rendered":"Bitcoin Layer 2: An Overview of Stacks, Merlin Chain, and More"},"content":{"rendered":"<p>Bitcoin Layer 2 (L2) solutions are secondary networks built on top of the Bitcoin mainnet to enable fast, low-cost transactions and complex smart contracts. <\/p>\n<div>\n<p>By processing data off-chain and anchoring the final results to the Bitcoin blockchain, these protocols unlock &#8220;BTCFi&#8221;\u2014a new ecosystem of decentralized finance, lending, and yield-bearing products for Bitcoin holders.<\/p>\n<h3 data-path-to-node=\"4\">Why Does Bitcoin Need Layer 2?<\/h3>\n<p id=\"p-rc_cd0fc81046df6ec6-50\" data-path-to-node=\"5\"><span class=\"citation-70 citation-end-70\">While Bitcoin is the most secure and decentralized network in the world, its base layer is intentionally simple and slow.<\/span> <span class=\"citation-69 citation-end-69\">To keep the network stable, it can only process a handful of transactions per second.<\/span> <span class=\"citation-68 citation-end-68\">Layer 2s solve this by acting as a &#8220;high-speed lane&#8221; for Bitcoin.<\/span> They allow for the speed and flexibility of modern blockchains like Ethereum while still relying on Bitcoin for ultimate security and finality.<\/p>\n<h3 data-path-to-node=\"6\">Key Players in the 2026 Ecosystem<\/h3>\n<p data-path-to-node=\"7\">The Bitcoin L2 landscape has matured into several distinct technical approaches:<\/p>\n<ul data-path-to-node=\"8\">\n<li>\n<p id=\"p-rc_cd0fc81046df6ec6-51\" data-path-to-node=\"8,0,0\"><strong data-path-to-node=\"8,0,0\" data-index-in-node=\"0\">Stacks (STX):<\/strong><span class=\"citation-67 citation-end-67\"> Stacks is a leading L2 that uses a unique &#8220;Proof-of-Transfer&#8221; (PoX) consensus.<\/span> <span class=\"citation-66\">In early 2026, the <\/span><strong data-path-to-node=\"8,0,0\" data-index-in-node=\"112\">Nakamoto Upgrade<\/strong><span class=\"citation-66\"> and the full rollout of <\/span><strong data-path-to-node=\"8,0,0\" data-index-in-node=\"153\">sBTC<\/strong><span class=\"citation-66 citation-end-66\"> have enabled 100x faster throughput.<\/span> <span class=\"citation-65 citation-end-65\">This allows users to earn BTC rewards directly by &#8220;stacking&#8221; STX tokens and use sBTC (a decentralized 1:1 Bitcoin-backed asset) in various DeFi apps.<\/span><\/p>\n<\/li>\n<li><span class=\"citation-65 citation-end-65\"><strong data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"><span class=\"citation-64\">Merlin Chain:<\/span><\/strong><span class=\"citation-64 citation-end-64\"> A prominent Zero-Knowledge (ZK) Rollup that has gained massive traction in 2026.<\/span> <span class=\"citation-63 citation-end-63\">Merlin bundles thousands of transactions together and generates a cryptographic proof that is verified on the Bitcoin mainnet.<\/span> It is a major hub for &#8220;Bitcoin-native&#8221; DeFi, supporting Ordinals, Runes, and a wide array of gaming applications.<\/span><\/li>\n<li><span class=\"citation-65 citation-end-65\"><strong data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"><span class=\"citation-62\">Rootstock (RSK):<\/span><\/strong><span class=\"citation-62 citation-end-62\"> The oldest Bitcoin sidechain, which is EVM-compatible.<\/span> This means developers can easily port Ethereum-based applications over to the Bitcoin ecosystem.<\/span><\/li>\n<li><span class=\"citation-65 citation-end-65\"><strong data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"><span class=\"citation-61\">Lightning Network:<\/span><\/strong><span class=\"citation-61 citation-end-61\"> While primarily used for instant micro-payments, the Lightning Network remains a core pillar of the L2 ecosystem, increasingly being used for institutional settlement and merchant payments worldwide.<\/span><\/span><\/li>\n<\/ul>\n<h3 data-path-to-node=\"9\">The Rise of Bitcoin-Native Yield<\/h3>\n<p id=\"p-rc_cd0fc81046df6ec6-55\" data-path-to-node=\"10\">By mid-2026, the primary driver for Bitcoin Layer 2 adoption is <strong data-path-to-node=\"10\" data-index-in-node=\"64\">Self-Custodial Staking<\/strong>. <span class=\"citation-60 citation-end-60\">Projects are now allowing Bitcoin holders to earn a &#8220;native yield&#8221; (often 5\u201310% APY) on their idle BTC by participating in L2 security or liquidity pools.<\/span> This shift has transformed Bitcoin from a passive &#8220;store of value&#8221; into an active, productive financial asset.<\/p>\n<h3 data-path-to-node=\"9\">The Rise of Bitcoin-Native Yield<\/h3>\n<p id=\"p-rc_cd0fc81046df6ec6-55\" data-path-to-node=\"10\">By mid-2026, the primary driver for Bitcoin Layer 2 adoption is <strong data-path-to-node=\"10\" data-index-in-node=\"64\">Self-Custodial Staking<\/strong>. <span class=\"citation-60 citation-end-60\">Projects are now allowing Bitcoin holders to earn a &#8220;native yield&#8221; (often 5\u201310% APY) on their idle BTC by participating in L2 security or liquidity pools.<\/span> This shift has transformed Bitcoin from a passive &#8220;store of value&#8221; into an active, productive financial asset.<\/p>\n<p data-path-to-node=\"10\">&nbsp;<\/p>\n<h3 data-path-to-node=\"12\">FAQ<\/h3>\n<p id=\"p-rc_cd0fc81046df6ec6-56\" data-path-to-node=\"13\"><strong data-path-to-node=\"13\" data-index-in-node=\"0\">1. Is my Bitcoin safe on a Layer 2 network?<\/strong><\/p>\n<p id=\"p-rc_cd0fc81046df6ec6-56\" data-path-to-node=\"13\">Security depends on the specific L2. <span class=\"citation-59 citation-end-59\">&#8220;Rollups&#8221; like Merlin Chain inherit more security from the Bitcoin mainnet through cryptographic proofs.<\/span> <span class=\"citation-58 citation-end-58\">&#8220;Sidechains&#8221; like Stacks or Rootstock have their own validator sets but are tightly anchored to Bitcoin.<\/span> Always check the &#8220;bridge&#8221; security and decentralization level of an L2 before moving significant funds. <button class=\"button multiple-button ng-star-inserted\" aria-label=\"\u67e5\u770b\u6765\u81ea\u201cMEXC Exchange\u548cBingX\u201d\u7684\u5f15\u7528\u5185\u5bb9\u7684\u6765\u6e90\u8be6\u60c5\u3002\u6253\u5f00\u4fa7\u8fb9\u680f\u3002\"><\/button><\/p>\n<p id=\"p-rc_cd0fc81046df6ec6-57\" data-path-to-node=\"14\"><strong data-path-to-node=\"14\" data-index-in-node=\"0\">2. What is sBTC on the Stacks network?<\/strong><\/p>\n<p id=\"p-rc_cd0fc81046df6ec6-57\" data-path-to-node=\"14\"><span class=\"citation-57 citation-end-57\">sBTC is a decentralized, programmable version of Bitcoin on the Stacks layer.<\/span> It allows you to move your BTC into the Stacks ecosystem to use in smart contracts\u2014such as lending it out to earn interest\u2014and then move it back to the Bitcoin mainnet whenever you choose, all without relying on a centralized custodian. <button class=\"button ng-star-inserted\" aria-label=\"\u67e5\u770b\u6765\u81ea\u201cBitcoin Foundation\u201d\u7684\u5f15\u7528\u5185\u5bb9\u7684\u6765\u6e90\u8be6\u60c5\u3002\u6253\u5f00\u4fa7\u8fb9\u680f\u3002\" data-hveid=\"0\" data-ved=\"0CAAQvoAQahgKEwiflqySrKmUAxUAAAAAHQAAAAAQhAE\"><\/button><\/p>\n<p id=\"p-rc_cd0fc81046df6ec6-58\" data-path-to-node=\"15\"><strong data-path-to-node=\"15\" data-index-in-node=\"0\">3. Do I need a new wallet to use Bitcoin Layer 2s?<\/strong><\/p>\n<p data-path-to-node=\"10\">&nbsp;<\/p>\n<p id=\"p-rc_cd0fc81046df6ec6-58\" data-path-to-node=\"15\"><span class=\"citation-56 citation-end-56\">Many modern wallets (like Leather, Xverse, or OKX Wallet) are designed to handle both Bitcoin L1 and various L2s simultaneously.<\/span> However, because different L2s use different technical standards (EVM vs. Clarity vs. ZK), you should ensure your wallet is compatible with the specific network you intend to use.<\/p>\n<p><span><i>Image source: Shutterstock<\/i><\/span> <\/div>\n<p><a href=\"https:\/\/blockchain.news\/\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bitcoin Layer 2 (L2) solutions are secondary networks built on top of the Bitcoin mainnet to enable fast, low-cost transactions and complex smart contracts. By processing data off-chain and anchoring the final results to the Bitcoin blockchain, these protocols unlock &#8220;BTCFi&#8221;\u2014a new ecosystem of decentralized finance, lending, and yield-bearing products for Bitcoin holders. Why Does [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":596005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[17290,20322,172,25054,141],"class_list":{"0":"post-596004","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-blockchain","8":"tag-bitcoin-layer-2","9":"tag-btcfi","10":"tag-crypto","11":"tag-stacks-sbtc","12":"tag-wiki"},"_links":{"self":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/posts\/596004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/comments?post=596004"}],"version-history":[{"count":0,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/posts\/596004\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/media\/596005"}],"wp:attachment":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/media?parent=596004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/categories?post=596004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/tags?post=596004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}