{"id":46325,"date":"2026-06-09T12:59:24","date_gmt":"2026-06-09T12:59:24","guid":{"rendered":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/"},"modified":"2026-06-09T12:59:24","modified_gmt":"2026-06-09T12:59:24","slug":"second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap","status":"publish","type":"post","link":"https:\/\/cryptd.in\/id\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/","title":{"rendered":"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap"},"content":{"rendered":"

Bitcoin Magazine<\/a>
\n
\nSecond Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap<\/a><\/p>\n

<\/div>\n

Second<\/a>, a Bitcoin development lab, has officially launched Bark \u2014 its implementation of the Ark protocol \u2014 on the Bitcoin mainnet, opening up self-custodial bitcoin payments to developers and everyday users alike without the complexity traditionally associated with Lightning Network<\/a> or on-chain transactions.<\/p>\n

Bark is built on the Ark protocol<\/a>, a layer-2 solution that allows large numbers of users to share on-chain UTXOs via trees of pre-signed, off-chain transactions, spreading fee costs across participants while preserving individual self-custody.\u00a0<\/p>\n

Unlike Lightning, Ark requires no channel management or liquidity pre-allocation, addressing pain points that have long kept mainstream users tethered to custodial alternatives.<\/p>\n

\u201cWe wanted to make it ridiculously easy for users to get started with self-custodial bitcoin, hold it, and spend it, without surprise fees, and without having to manage channels or liquidity,\u201d wrote CEO Steven Roose in a blog post.<\/p>\n

As of today, Second\u2019s Ark server is publicly accessible for payments. The launch includes a full developer toolkit \u2014 the Bark SDK \u2014 written in Rust with language bindings for Kotlin, Swift, React Native, Flutter, Go, Python, and WebAssembly. For server environments, Second also ships Barkd, a standalone wallet daemon exposing a REST interface with an OpenAPI spec.<\/p>\n

Several applications are already mainnet-enabled at launch.\u00a0<\/p>\n

Noah is a full-stack mobile Ark wallet pairing a React Native frontend with a Rust backend. Arke is a design-led native iOS wallet built around open-source UX principles from bitcoin.design. Satsigner brings Sparrow-style UTXO management and multisig workflows to mobile users.\u00a0 Bark Wallet is an Umbrel app supporting Ark, Lightning, and on-chain payments.<\/p>\n

A BTCPay Server plugin \u2014 also built by Second \u2014 lets merchants process self-custodial Lightning payments without opening channels or managing liquidity.<\/p>\n

Second has raised<\/a> $5.1 million from a private investor and operates with a team of 11. The company has drawn notable industry talent, including former Blockstream engineers.<\/p>\n

The launch comes at a moment of heightened competition in the Bitcoin layer-2 space, with multiple protocols \u2014 including Ark Labs\u2019 Arkade and statechain-based solutions \u2014 vying to close the gap between self-custody and user experience.<\/p>\n

Second will also host a live AMA on Stacker News<\/a> on June 9 at 10:00 AM EST.<\/p>\n

This post Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap<\/a> first appeared on Bitcoin Magazine<\/a> and is written by Micah Zimmerman<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

Bitcoin Magazine Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap Second, a Bitcoin development lab, has officially launched Bark \u2014 its implementation of the Ark protocol \u2014 on the Bitcoin mainnet, opening up self-custodial bitcoin payments to developers and everyday users alike without the complexity traditionally associated with Lightning Network or on-chain transactions. […]<\/p>\n","protected":false},"author":1,"featured_media":46327,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-46325","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-feeds"],"yoast_head":"\nSecond Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap - cryptd.in<\/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:\/\/cryptd.in\/id\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap - cryptd.in\" \/>\n<meta property=\"og:description\" content=\"Bitcoin Magazine Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap Second, a Bitcoin development lab, has officially launched Bark \u2014 its implementation of the Ark protocol \u2014 on the Bitcoin mainnet, opening up self-custodial bitcoin payments to developers and everyday users alike without the complexity traditionally associated with Lightning Network or on-chain transactions. […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cryptd.in\/id\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/\" \/>\n<meta property=\"og:site_name\" content=\"cryptd.in\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-09T12:59:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bitcoinmagazine.com\/wp-content\/uploads\/2026\/06\/Pics-49.jpg\" \/>\n<meta name=\"author\" content=\"cryptd.in\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"cryptd.in\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/\"},\"author\":{\"name\":\"cryptd.in\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/#\\\/schema\\\/person\\\/7973e8183bc6723b86adfe84d5af0ce4\"},\"headline\":\"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap\",\"datePublished\":\"2026-06-09T12:59:24+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/\"},\"wordCount\":395,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/Pics-49-4He3Sc.jpg\",\"articleSection\":[\"Feeds\"],\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/\",\"url\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/\",\"name\":\"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap - cryptd.in\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/Pics-49-4He3Sc.jpg\",\"datePublished\":\"2026-06-09T12:59:24+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#primaryimage\",\"url\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/Pics-49-4He3Sc.jpg\",\"contentUrl\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/Pics-49-4He3Sc.jpg\",\"width\":1440,\"height\":810},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/cryptd.in\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/#website\",\"url\":\"https:\\\/\\\/cryptd.in\\\/\",\"name\":\"cryptd.in\",\"description\":\"Alternative LinkedIn for Crypto-friendly Talents\",\"publisher\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/cryptd.in\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"id\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/#organization\",\"name\":\"cryptd.in\",\"url\":\"https:\\\/\\\/cryptd.in\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/cryptdin_logo.jpg\",\"contentUrl\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/cryptdin_logo.jpg\",\"width\":900,\"height\":900,\"caption\":\"cryptd.in\"},\"image\":{\"@id\":\"https:\\\/\\\/cryptd.in\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/#\\\/schema\\\/person\\\/7973e8183bc6723b86adfe84d5af0ce4\",\"name\":\"cryptd.in\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/litespeed\\\/avatar\\\/0b38230b9c4987de71d8ea131b2d0c60.jpg?ver=1780422885\",\"url\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/litespeed\\\/avatar\\\/0b38230b9c4987de71d8ea131b2d0c60.jpg?ver=1780422885\",\"contentUrl\":\"https:\\\/\\\/cryptd.in\\\/wp-content\\\/litespeed\\\/avatar\\\/0b38230b9c4987de71d8ea131b2d0c60.jpg?ver=1780422885\",\"caption\":\"cryptd.in\"},\"sameAs\":[\"http:\\\/\\\/cryptd.in\"],\"url\":\"https:\\\/\\\/cryptd.in\\\/id\\\/author\\\/cryptd-in\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap - cryptd.in","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cryptd.in\/id\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/","og_locale":"id_ID","og_type":"article","og_title":"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap - cryptd.in","og_description":"Bitcoin Magazine Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap Second, a Bitcoin development lab, has officially launched Bark \u2014 its implementation of the Ark protocol \u2014 on the Bitcoin mainnet, opening up self-custodial bitcoin payments to developers and everyday users alike without the complexity traditionally associated with Lightning Network or on-chain transactions. […]","og_url":"https:\/\/cryptd.in\/id\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/","og_site_name":"cryptd.in","article_published_time":"2026-06-09T12:59:24+00:00","og_image":[{"url":"https:\/\/bitcoinmagazine.com\/wp-content\/uploads\/2026\/06\/Pics-49.jpg","type":"","width":"","height":""}],"author":"cryptd.in","twitter_card":"summary_large_image","twitter_misc":{"Ditulis oleh":"cryptd.in","Estimasi waktu membaca":"2 menit"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#article","isPartOf":{"@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/"},"author":{"name":"cryptd.in","@id":"https:\/\/cryptd.in\/#\/schema\/person\/7973e8183bc6723b86adfe84d5af0ce4"},"headline":"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap","datePublished":"2026-06-09T12:59:24+00:00","mainEntityOfPage":{"@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/"},"wordCount":395,"commentCount":0,"publisher":{"@id":"https:\/\/cryptd.in\/#organization"},"image":{"@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#primaryimage"},"thumbnailUrl":"https:\/\/cryptd.in\/wp-content\/uploads\/2026\/06\/Pics-49-4He3Sc.jpg","articleSection":["Feeds"],"inLanguage":"id","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/","url":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/","name":"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap - cryptd.in","isPartOf":{"@id":"https:\/\/cryptd.in\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#primaryimage"},"image":{"@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#primaryimage"},"thumbnailUrl":"https:\/\/cryptd.in\/wp-content\/uploads\/2026\/06\/Pics-49-4He3Sc.jpg","datePublished":"2026-06-09T12:59:24+00:00","breadcrumb":{"@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#breadcrumb"},"inLanguage":"id","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/"]}]},{"@type":"ImageObject","inLanguage":"id","@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#primaryimage","url":"https:\/\/cryptd.in\/wp-content\/uploads\/2026\/06\/Pics-49-4He3Sc.jpg","contentUrl":"https:\/\/cryptd.in\/wp-content\/uploads\/2026\/06\/Pics-49-4He3Sc.jpg","width":1440,"height":810},{"@type":"BreadcrumbList","@id":"https:\/\/cryptd.in\/second-launches-bark-on-bitcoin-mainnet-targeting-self-custody-ux-gap\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/cryptd.in\/"},{"@type":"ListItem","position":2,"name":"Second Launches Bark on Bitcoin Mainnet, Targeting Self-Custody UX Gap"}]},{"@type":"WebSite","@id":"https:\/\/cryptd.in\/#website","url":"https:\/\/cryptd.in\/","name":"cryptd.in","description":"LinkedIn Alternatif untuk Talenta yang Ramah Kripto","publisher":{"@id":"https:\/\/cryptd.in\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cryptd.in\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"id"},{"@type":"Organization","@id":"https:\/\/cryptd.in\/#organization","name":"cryptd.in","url":"https:\/\/cryptd.in\/","logo":{"@type":"ImageObject","inLanguage":"id","@id":"https:\/\/cryptd.in\/#\/schema\/logo\/image\/","url":"https:\/\/cryptd.in\/wp-content\/uploads\/2024\/05\/cryptdin_logo.jpg","contentUrl":"https:\/\/cryptd.in\/wp-content\/uploads\/2024\/05\/cryptdin_logo.jpg","width":900,"height":900,"caption":"cryptd.in"},"image":{"@id":"https:\/\/cryptd.in\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/cryptd.in\/#\/schema\/person\/7973e8183bc6723b86adfe84d5af0ce4","name":"cryptd.in","image":{"@type":"ImageObject","inLanguage":"id","@id":"https:\/\/cryptd.in\/wp-content\/litespeed\/avatar\/0b38230b9c4987de71d8ea131b2d0c60.jpg?ver=1780422885","url":"https:\/\/cryptd.in\/wp-content\/litespeed\/avatar\/0b38230b9c4987de71d8ea131b2d0c60.jpg?ver=1780422885","contentUrl":"https:\/\/cryptd.in\/wp-content\/litespeed\/avatar\/0b38230b9c4987de71d8ea131b2d0c60.jpg?ver=1780422885","caption":"cryptd.in"},"sameAs":["http:\/\/cryptd.in"],"url":"https:\/\/cryptd.in\/id\/author\/cryptd-in\/"}]}},"_links":{"self":[{"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/posts\/46325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/comments?post=46325"}],"version-history":[{"count":0,"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/posts\/46325\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/media\/46327"}],"wp:attachment":[{"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/media?parent=46325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/categories?post=46325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryptd.in\/id\/wp-json\/wp\/v2\/tags?post=46325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}