2025-12-10T15:01:36Z https://njump.me second https://njump.me/npub1ake09xg6t9nf6gsssumarwa7ev0kt2fdyjstvnc9k32hegr9y45seapfwt https://blossom.primal.net/430dbc0eebab9d7da92bcde1480820b86458447d104232733fc86616bae44ff4.jpg https://blossom.primal.net/430dbc0eebab9d7da92bcde1480820b86458447d104232733fc86616bae44ff4.jpg https://njump.me/nevent1qqs243grz4fc33xgs38sfwle9dm8eepglk2ptmxywrme5dele37xpxszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjz79unz Two Bark releases in two days...we hope you&#39;ll understand given the emerging security environment in bitcoin. 0.6.0 has some breaking changes you&#39;re going to want to pay attention to: it&#39;s required to continue support for refreshes and Lightning payments, so please get updated asap. We know this may be a disruptive update, so let us know if we can help. And thanks to Philipp Hoenisch of Lendasat for the report behind a fix.<br/><br/>Full changelog: <a href="https://second.tech/docs/changelog">https://second.tech/docs/changelog</a><br/> 2026-08-05T18:06:49Z https://njump.me/nevent1qqsrl2h8dmzt662xvvdfd33gwgvg0waq5kq59cdncz7mgxhxpsu6hegzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjuh84a3 Bark 0.5.0 is out, and it delivers one of our most requested features. A wallet&#39;s full off-chain balance can now be restored from its mnemonic alone, retrieved from the server. Lightning receives can now land on external Ark addresses, unlocking non-custodial Lightning address servers (thanks to Ben Carman for this work), and delegated refreshes can be scheduled ahead of time, when they&#39;re cheaper. Note that boarding now requires bark 0.5.0, so upgrade your clients to keep boarding.<br/><br/>Full changelog: <a href="https://second.tech/docs/changelog">https://second.tech/docs/changelog</a> 2026-08-04T19:03:46Z https://njump.me/nevent1qqszxq4ka40dnmnh7du8knr2m7nzgrc7njyl7lewf60a0wfpd9ttntqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjnfels8 <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1kuc70777tsvj67fl75s2dmy376t97hv05xmyuyshzzy6vhj5q5jstv0eyw" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>GBKS</span> (<span class="italic">npub1kuc…0eyw</span>)</a></span> has put together a walkthrough of how he presents emergency exits to users (&#34;forced move&#34;) in Arké.<br/><br/>He&#39;s a master of user-friendly bitcoin UX, so there are valuable tips for anyone building Bark into their app.<br/><br/><a href="https://www.youtube.com/watch?v=GxW574iolr4">https://www.youtube.com/watch?v=GxW574iolr4</a><br/> 2026-07-23T15:35:58Z https://njump.me/nevent1qqstv526xs7r2rl43lf7s8ylhnmqz0f2886nfsz20h7flf2dnvxm2tczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjcpfd2y We&#39;ve been doing some research on client-side Lightning pathfinding for Bark wallet apps. Instead of the Ark server working out the best payment route on the user&#39;s behalf, the wallet app builds the route and the payment onion itself, so the destination is not shared with the server and potentially eliminating minimum fees on Lightning transactions.<br/><br/>Full findings, link to proof of concept, and areas for further research: <a href="https://blog.second.tech/bark-client-side-pathfinding/">https://blog.second.tech/bark-client-side-pathfinding/</a><br/><br/> <img src="https://assets.second.tech/email/bark-client-side-pathfinding-hero.jpg"> <br/> 2026-07-21T15:52:01Z https://njump.me/nevent1qqsgjxzqq6uzjaeakl32mngycqtc02q7n5dtgunasqetf7eheu7qnzqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkja0ceur Bark 0.4.0 is out, and receiving just got simpler: one BIP 321 payment request covers Ark, Lightning, and on-chain, built in a single barkd call or straight from the SDK. Also in this release: fee quotes for on-chain payments before you send, wallet notifications without a websocket, control over exactly which VTXOs a payment spends, and crash safety across every payment operation.<br/><br/>Full changelog: <a href="https://second.tech/docs/changelog">https://second.tech/docs/changelog</a><br/><br/> <img src="https://assets.second.tech/email/bark-0-4-0-hero.png"> 2026-07-21T11:53:00Z https://njump.me/nevent1qqs8pt3f6q7tzepp97ze8s9e8l2kaln4t8ayg0qgfrkwaxrycr7nyzczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjp3s8gc In reply to <a href='/nevent1qqs005h0uszm9a0pcdhm49zmzrl6zg3pyty08rlwkzr9t8v7r4verrqpp4mhxue69uhkummn9ekx7mqqqdx4l'>nevent1q…dx4l</a><br/>_________________________<br/><br/>Bark is an implementation of the Ark protocol. It’s a new way of scaling bitcoin, where users share VTXOs, transact fast and cheap off-chain, but can always get back on-chain without permission, if they need to. It makes self-custodial Lightning easier too. 2026-06-12T15:06:14Z https://njump.me/nevent1qqsx8xw02hjj8addwpzes7vn5yrqzee7wn2wjukmn6jglqxq5lexqlgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjkmsmnq Bark added in the latest Alby Hub release. Possibly the simplest way to add self-custodial Lightning to all your NWC-connected apps.<blockquote class="border-l-05rem border-l-strongpink border-solid"><div class="-ml-4 bg-gradient-to-r from-gray-100 dark:from-zinc-800 to-transparent mr-0 mt-0 mb-4 pl-4 pr-2 py-2">quoting <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Article"><a itemprop="url" href="/nevent1qqsfqnwvpeudlmgzm979q68qr36z83srhc9h76g0m2tegf2dgkf6fpgulz0t3" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1">nevent1q…z0t3</a></span> </div> Alby Hub 1.23 release codenamed "Tim Hudson" is out!<br/><br/>🐶 Ark (Bark by <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqy28wumn8ghj7un9d3shjtnyv9kh2uewd9hsqg8dktefjxjev6wjyyy8xlgmh0ktraj6jtfy5zmy7pd52472qef9dy5cmhc8" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>second</span> (<span class="italic">nprofile…mhc8</span>)</a></span>) backend - Beta<br/>🧪 Just-In-Time Channels<br/>💳 Cards page<br/>💱 Fiat and bitcoin units toggles in currency inputs<br/>🎥 "Stories" widget <br/><br/>Let’s dive in 🧵...<br/> <video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://blossom.primal.net/bcaea4504e29db58efcdb2e9a690c3843f152a531d2d4fbae5f108f253e316c5.mp4"></video> <br/><br/>---<br/><br/>You can now run self-hosted Alby Hub with Ark (Bark by <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqy28wumn8ghj7un9d3shjtnyv9kh2uewd9hsqg8dktefjxjev6wjyyy8xlgmh0ktraj6jtfy5zmy7pd52472qef9dy5cmhc8" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>second</span> (<span class="italic">nprofile…mhc8</span>)</a></span>) , and connect it to apps within a vast <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqyw8wumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctvqqszm52qe2qdkc4u7dma0klx3532jka2g8geck6fwxncyp90wktq2xs75gs3w" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>NWC</span> (<span class="italic">nprofile…gs3w</span>)</a></span> ecosystem.<br/><br/>See how you can connect to mobile Alby Go in just 20 seconds!<br/> <video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://blossom.primal.net/ac90b7d9c15a5cea32d7ec9d163c7582e563b71dbcf0e062187cecde5ed5f051.mp4"></video> <br/><br/>Read more about our Ark implementation on our blog: <a href="https://getalby.com/blog/introducing-ark-in-alby-hub">https://getalby.com/blog/introducing-ark-in-alby-hub</a><br/><br/>---<br/><br/>🧪 Just-In-Time Channels <br/><br/>No inbound liquidity? No problem.<br/><br/>All LDK-based Alby Hubs now work with JIT channels — a type of channels that open automatically the moment you receive a payment.<br/><br/>Just create an invoice of any amount, even when it's over your receive limit.<br/><br/> <img src="https://blossom.primal.net/6aecbd20f7eb75b51b80336613a7752ba14cb8c46bae74410971784abbca52ac.png"> <br/><br/>---<br/><br/>💳 Cards page<br/><br/>Spending sats with Hub everywhere just got much easier.<br/><br/>Discover, connect and top up debit cards straight from your Hub — powered by <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqyw8wumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctvqqszm52qe2qdkc4u7dma0klx3532jka2g8geck6fwxncyp90wktq2xs75gs3w" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>NWC</span> (<span class="italic">nprofile…gs3w</span>)</a></span> <br/><br/>You'll get a special top-up link for your connected card.<br/> <img src="https://blossom.primal.net/46113614a836ab65b2d819b339fe4778ec5c084b6800ef7df3fc6756d21559b5.png"> <br/><br/>---<br/><br/>💱 Currency input got an upgrade<br/><br/>Click on fiat unit to type in fiat value, or click on your sats unit to switch it to BTC unit.<br/><br/> <img src="https://blossom.primal.net/f89dd06ca634eaaeb5696f97fbf9fa10de46ae7c0239ec53334a3d1b8b2e0e9b.png"> <br/><br/> <img src="https://blossom.primal.net/522646787460923f16c52898413bfcbc93830a2ac76f23d056febb29eff4e7d9.png"> <br/><br/>---<br/><br/>And finally, Stories widget on Home dashboard. You'll see here videos of new releases, highlighted features and tips & tricks of using Alby Hub.<br/><br/> <img src="https://blossom.primal.net/cc98d8e37e3853ae356970b12f2e5ebbcd7ad79a68b11d6f7593b64408125951.png"> <br/><br/>---<br/><br/>This release is dedicated to Tim Hudson — co-creator of SSLeay, the precursor to the widely used OpenSSL library<br/><br/>Alby Hub is open source. View the full release notes on GitHub and join in with a contribution If you like: <a href="https://github.com/getAlby/hub/releases">https://github.com/getAlby/hub/releases</a><br/><br/>---<br/><br/>Get Alby Hub today and use your bitcoin like never before:<br/><a href="https://getalby.com/alby-hub">https://getalby.com/alby-hub</a> </blockquote> 2026-06-12T14:54:37Z https://njump.me/nevent1qqsdzf7n5rwpaaqwn8ntjntm0jln2jzgu6hjdy77t6knymzw2szlxwczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjqt6a33 In reply to <a href='/nevent1qqs2pjjys7t822wjjljw3knrdlzaudga00hj9gj9mjsaswwpq90eukqze3msm'>nevent1q…3msm</a><br/>_________________________<br/><br/>Don’t tell anyone but @MattHill is already helping us get the package ready. 2026-06-12T12:32:35Z https://njump.me/nevent1qqs8urcl33twpq887j7hvt0nrvp4zwxf2ehs4mwcdqnl7algxmfacgczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjnn7a6n Bark Wallet is now on the Umbrel app store. It&#39;s a simple, self-custodial bitcoin wallet covering the complete Bark experience: send and receive over Ark, Lightning, and on-chain, with automated refreshes, an emergency exit, and no channel and liquidity management.<br/><br/>It&#39;s also open source, a great foundation for your next wallet app project!<br/><br/>Learn more about what Bark Wallet can do and how it was built: <a href="https://blog.second.tech/bark-wallet-now-on-umbrel/">https://blog.second.tech/bark-wallet-now-on-umbrel/</a><br/><br/> <img src="https://blossom.primal.net/731305ba168f0a3f36886f2f9a4f1a62c5496fcf6e85027ce28796205f8e49db.png"> 2026-06-11T17:56:49Z https://njump.me/nevent1qqswjyx6m9h8vlgay0el07uml0uqvqa87hjddcfd2mdk7eucqshu4lszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj5zgay8 Bark went live with wallet apps ready to go on day one, built by bitcoiners who&#39;d been working alongside us since long before launch.<br/><br/>Noah, from the team behind Blixt, is the Ark wallet you&#39;d expect from self-custodial wallet veterans, including some fancy Ark-infused Lightning addresses for static, free, offline payments. iOS and Android.<br/><br/>Arké, from Christoph Ono, leverages years of the Bitcoin Design Community&#39;s open-source UX work, and pioneers brand-new UX for Ark. iOS only. <br/><br/>Both apps are open source and available today. Full write-up: <a href="https://blog.second.tech/introducing-noah-and-arke/">https://blog.second.tech/introducing-noah-and-arke/</a><br/> <img src="https://blossom.primal.net/eaa34dbf3499247ea45330539b2cf2be89db8c13e6fd8199b35d0220a8c331df.jpg"> 2026-06-10T22:57:10Z https://njump.me/nevent1qqs2978avdaqw3lp675g6zvw7ckx0z43dmhh8se0zfjhqnp6d9xnargzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj5elgzl SECOND IS NOW ON MAINNET.<br/><br/>Bark, our implementation of the Ark protocol, is available for anyone to start making bitcoin payments.<br/><br/>Included in the launch are our mainnet Ark server, the Bark SDK, and multiple wallets to try from day one.<br/><br/>More details, and our vision for bitcoin payments, from Steven Roose: blog.second.tech/bark-now-on-bitcoin-mainnet/<br/> <img src="https://blossom.primal.net/772340e1ceb996a9bced3f3abf33d2496cf6aa0c374dea3756dac634400d30fb.jpg"> 2026-06-09T13:57:26Z https://njump.me/nevent1qqsqm8ppr834ys0xgc4wu6vmuc6lwraqa9pthsz4xd93t6cppzfvv2qzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjc0z9vc In reply to <a href='/nevent1qqsrmqmwv2veyv092sttjlp8mzc5kdlxk5q5v86lj4wnptkhypayktgcnpr5n'>nevent1q…pr5n</a><br/>_________________________<br/><br/>Bark (our Ark implementation) is currently bitcoin only. 2026-06-04T18:51:17Z https://njump.me/nevent1qqsvzpj2wtwjm8f6tt0400uq6kupukhkyzthz9q4fh0krwnj45s460gzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj0m92xx New page up: a directory of wallets building on Bark. Most are open source, so you can see how teams are handling the Bark SDK and Barkd to deliver bitcoin payments over Lightning, Ark, and on-chain.<br/><br/><a href="https://second.tech/docs/built-with-bark">https://second.tech/docs/built-with-bark</a><br/><br/> <img src="https://blossom.primal.net/b1f9e2b6981972754528a029fd5a1b67cdddd18f17a97ae9ef72d32e15b98d08.png"> <br/><br/> <img src="https://blossom.primal.net/f8c7cfb89fa2013bd600c5a493d9c86dd419dc8bb8e809e8fd37afdab42187e5.png"> 2026-05-20T14:45:17Z https://njump.me/nevent1qqs9jree48h4u76jv6rv027lxyx7pqklsyhtnl4075elurnm48tpcrgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjvz9an9 &#34;This was a genuinely fun build. The Bark integration was way smoother than I expected going in. Being able to accept Lightning payments without running my own node, and having native Ark payments work alongside that, made the whole payment layer surprisingly simple to wire up.&#34; - PiHiker, ArkAPI dev<br/><br/>Cool new project for charging for API calls: <a href="https://community.second.tech/t/arkapi-a-pay-per-call-api-gateway-with-lightning-and-native-ark-payments-built-on-bark-and-live-on-signet/193/1">https://community.second.tech/t/arkapi-a-pay-per-call-api-gateway-with-lightning-and-native-ark-payments-built-on-bark-and-live-on-signet/193/1</a> 2026-03-31T16:14:25Z https://njump.me/nevent1qqsw43ue5vnaym3jrhtv2vchlhlvjhzkqefc5lgyxt5lnsttdz5h43czyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj0zyd9z We caught a capacity overflow bug in Bark before it ever hit a user—thanks to the fuzz testing @luca0x46 has been running around the clock. A malformed VTXO could have requested an arbitrary vec size during deserialization, triggering a panic. Now it&#39;s patched.<br/><br/>Bark&#39;s client-server architecture means the server has to gracefully handle anything thrown at it—malformed VTXOs, malicious client requests, unexpected edge cases. Fuzzing helps make sure the server stays up and keeps serving rounds no matter what comes in.<br/><br/>The vec allocation bug is a good example of something easy to miss in review—stable Rust doesn&#39;t yet support try_with_capacity, so the bounds check has to be done manually. Our first fuzz target was a straightforward deserialize/serialize pass, and it surfaced the issue immediately.<br/><br/>The fuzzer runs 24/7 now, with minimized corpora pushed to our bark-qa repo alongside test vectors used throughout Bark&#39;s development. More targets coming—serialization/deserialization expansions first, then method-level fuzz targets.<br/><br/>Full writeup: <a href="https://blog.second.tech/fuzzing-bark-for-server-reliability/">https://blog.second.tech/fuzzing-bark-for-server-reliability/</a><br/><br/> <img src="https://uploads.postiz.com/c12ae4a04c2c4c45b270a9354ab3efb5.jpg"> 2026-02-28T12:20:00Z https://njump.me/nevent1qqstp2jw88chftph6w74z65gfxxn24yxyu767q3ezc0aphdyeh5y3hczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkju7v8us In reply to <a href='/nevent1qqsvc2pvky86ysjwa2zajepe0xfe6s3v2el67lztlsfr3s2ctvylzhqq8kfxp'>nevent1q…kfxp</a><br/>_________________________<br/><br/>Rust docs: docs.rs/bark-wallet/latest/bark 2026-02-24T05:00:04Z https://njump.me/nevent1qqsv43s6fxqphv24zvk4j6ae6ft96j2cx3rvpy98424sm7tkalryd0czyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjcsdc7m Bark&#39;s Rust API docs are live on docs(dot)rs. `Wallet` is the central entry point—create, sync, inspect VTXOs, pay Lightning invoices, refresh in rounds, exit unilaterally. All from one struct. 2026-02-24T04:59:59Z https://njump.me/nevent1qqsvc2pvky86ysjwa2zajepe0xfe6s3v2el67lztlsfr3s2ctvylzhqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj5704dn In reply to <a href='/nevent1qqsy8whgjnc5dc5q86xs3c89avfndph2mklsjnkz384harrur4t8kwqr3w4dq'>nevent1q…w4dq</a><br/>_________________________<br/><br/>Devs can even open up these settings to users, so that they can customize refresh policy based on their preferences/needs. 2026-02-19T11:00:05Z https://njump.me/nevent1qqsyegcqakudty3rq96lavgrx089ar7tuwpsjw87ejcc9vc69vkhvhszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjrzacsz It&#39;s probably going to be a process of trial and error to find the optimal refresh strategy for users on Ark. Bark lets each wallet dev implement their own VTXO refresh strategy—set when VTXOs should be auto-refreshed based on expiry, size, or exit cost:<br/><br/> <img src="https://uploads.postiz.com/aea203b44cf34c0186e1add114862385.png"> 2026-02-19T10:59:59Z https://njump.me/nevent1qqsy8whgjnc5dc5q86xs3c89avfndph2mklsjnkz384harrur4t8kwqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjdlzd5a One-of-a-kind app onboarding from <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqywhwumn8ghj7mn0wd68yttsw43zuam9d3kx7unyv4ezumn9wsqzpde3ulaauhqe94unlafq5mkfra5ktawclgdkfcfpwyyf5e09gpf9xf2hhn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>GBKS</span> (<span class="italic">nprofile…2hhn</span>)</a></span>. Love it. <video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://blossom.primal.net/eb5db7b105d6617f17b54e0ad7e8ba26b9656769663a717235bd505b8645166a.mov"></video> 2026-02-18T11:37:13Z https://njump.me/nevent1qqs8fdy7uhqdvw8pe8agt8xu2z3kupr74wf4lsjrtuy2ulrxusygr0gzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjpyz42t In reply to <a href='/nevent1qqspxpvg73syg7s77cxmhftrqz6548w7dygrndvjl4xmtwmtn7y9mxgs4j8pd'>nevent1q…j8pd</a><br/>_________________________<br/><br/>Rust docs: <a href="https://docs.rs/bark-wallet/latest/bark/index.html">https://docs.rs/bark-wallet/latest/bark/index.html</a> 2026-02-17T12:10:05Z https://njump.me/nevent1qqsql2mrznx5zlh9kp505p06m0kjkyd56nnge6sr2n9ur903f7ucqzszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjwc989u Bark&#39;s `Wallet` struct is the single entry point for Ark, Lightning, and on-chain payments. Create one with a mnemonic + sqlite + server URL and you&#39;re transacting.<br/><br/> <img src="https://uploads.postiz.com/5ace635d0f264065b3b29eb3b4b90054.png"> 2026-02-17T12:09:59Z https://njump.me/nevent1qqspxpvg73syg7s77cxmhftrqz6548w7dygrndvjl4xmtwmtn7y9mxgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjegqp6d The liquidity fee model in Ark is time-based: refreshing a VTXO costs more the further it is from expiry. This creates natural incentives to refresh closer to deadline rather than early. 2026-02-16T11:54:59Z https://njump.me/nevent1qqsgtwpsm6uvm7uuwtwhdh9f2u3mxgvdargzgnayj0ce6nqpf52qh9gzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjp4jnee On-chain payments on Bark no longer happen in rounds. They&#39;re now instant, kind of like Ark-to-onchain swaps. This makes them more expensive than before, but the upside is that they&#39;re now broadcast immediately (more intuitive UX). 2026-02-15T10:54:59Z https://njump.me/nevent1qqsgqjk7w72z3hpukexas8rrz9v5z0u6td4ulw3ltyhgvy9pv9cnjjczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjvs2cz8 Generating Ark addresses offline is now feasible with persisted server pubkeys. No need to be connected to the Ark server just to produce a receive address. 2026-02-15T07:59:59Z https://njump.me/nevent1qqsvntxajvg8kfw6gjd8g3hsjgc5un9n38798edn0xrc33634pvtzkgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjkkxnkv Payments on Bark currently use a single input. Instead of multi-input txs, large txs bundle independent arkoor txs into a &#34;package&#34; sent to the receiver in one go. Wallet history shows it as a single incoming payment. 2026-02-14T12:05:59Z https://njump.me/nevent1qqs8wc5y7fj94d25ptr2qxrf3twr5npjg4h2dfpp50ghv9znxg7gwrszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj7xdq8h Small Rust API design lesson from Bark development: if your top-level functions are just thin wrappers around methods on a struct, they shouldn&#39;t exist. Put the logic where it belongs. 2026-02-14T03:59:59Z https://njump.me/nevent1qqszlf37kc9dh2857cf9wg74ylvjnn25wpn2zggtk83jls3yr7uyteszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjc7qahg If you&#39;re building on the Bark library, Lightning payments are now `wallet.pay_lnaddr(..)` instead of standalone functions that take a wallet reference. Smaller surface, fewer surprises. 2026-02-13T16:59:59Z https://njump.me/nevent1qqs9avnk3ffth5xu0cca3qqtz6fu4jtlm7r94svnmdhssyvg4er46pgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjtymqum Bark&#39;s unified mailbox gives apps a single notification stream for everything across Ark, LN, and on-chain. Senders post payments using a blinded mailbox ID embedded in each address, so even when multiple addresses share a mailbox, senders can&#39;t link them to the same wallet.<br/><br/> <img src="https://uploads.postiz.com/6a8b46446a944b95a3f9746fda7167ef.png"> 2026-02-13T11:59:59Z https://njump.me/nevent1qqsw2sgfsf7k5zm5qv4fr4gzr4e5mla4tu3nvtnr9f5kuecwks5fn5czyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj2luluz We&#39;re building a shared corpus repository for our fuzz targets. Every time the fuzzer runs, it builds up optimized inputs that make future runs more efficient—it doesn&#39;t start from zero each time. Over time this becomes an automatically growing collection of edge cases that doubles as regression testing. 2026-02-12T01:59:59Z https://njump.me/nevent1qqsdntevsk9pp0wwdh43exts0jgsm9kqwudcj2v8p6xwzz5272g2vlszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj6zwfha In reply to <a href='/nevent1qqszfelufhqe4g47rmvv2gplxytfgyqt9pqgym209g07me50xuan98gu8mzt4'>nevent1q…mzt4</a><br/>_________________________<br/><br/>3/ Small thing, but this is the kind of environment friction that slows down security work if you don&#39;t solve it early. Now any contributor on NixOS can run the fuzzer locally with one command. 2026-02-11T17:00:15Z https://njump.me/nevent1qqsx46egneudxmtpt87gaalzty5l54qugg2yrslskel35afgjfp2srqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj6ly76r In reply to <a href='/nevent1qqs2vywy6d9l7k73cz3m3lv5fk2qrhumew0t35h70y9wxf497at9m9spxehdz'>nevent1q…ehdz</a><br/>_________________________<br/><br/>2/ The fix ended up being straightforward—disable Nix&#39;s fortify source flags at build time:<br/><br/> <img src="https://uploads.postiz.com/1d86ca9f22d24d5fb8c2f57a7ec62bef.png"> 2026-02-11T17:00:08Z https://njump.me/nevent1qqszfelufhqe4g47rmvv2gplxytfgyqt9pqgym209g07me50xuan98gzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjtv6urj 1/ Getting honggfuzz running inside a Nix development shell was its own adventure. Nix&#39;s hardening flags conflict with how honggfuzz instruments binaries, and glibc version mismatches between NixOS and honggfuzz added another layer. 2026-02-11T17:00:01Z https://njump.me/nevent1qqs2vywy6d9l7k73cz3m3lv5fk2qrhumew0t35h70y9wxf497at9m9szyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj8vn8ht Fuzz testing throws massive volumes of random and malformed data at your code to find crashes that normal testing misses. @lucad70&#39;s been adding it to our QA process and it&#39;s already caught arithmetic overflows and unwrap panics that could crash the server. Fuzzing is pretty much a requirement when you&#39;re building protocol-level software. 2026-02-10T16:59:59Z https://njump.me/nevent1qqs0tj053pp6229dhhtvql6cvmqjnds7g9lh5r0ntndlkhspgx4hg0qzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjlvjgmu Bitcoin scaling has two sides: transactions in blocks and UTXOs. Lightning scales transactions. Ark scales both. 2026-02-09T12:00:11Z https://njump.me/nevent1qqs28qssc799s94e8hfml6sj6hrd27r60ynm5cyefssrn0c3ueydkvgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj6pj8ks We&#39;ve redesigned how Bark-based wallets sync with the Ark server. The new unified mailbox replaces per-address polling with a single feed for all wallet notifications (Ark and Lightning payments, refreshes, and more) with support for real-time push subscriptions. One endpoint, checkpoint-based sync, and delegated notification auth for mobile. Available now in Bark.<br/><br/> <img src="https://uploads.postiz.com/5bbd68673a6846acaa71025ed83bbce5.jpg"> <br/><br/> <img src="https://uploads.postiz.com/0a49d32e10ed409c9dc9bfd1a6a36236.png"> 2026-02-09T10:51:12Z https://njump.me/nevent1qqs8tyd5dsrf0md3enmazx2720zq7nhhz7lwncscwgvvcvlxy8gxjpczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjgka77p In reply to <a href='/nevent1qqsvxf97pr7vr6fcdmv7uelddy7jc57g2wsdqzkg3klh0pptqf32r6guffc0q'>nevent1q…fc0q</a><br/>_________________________<br/><br/>More details: <a href="https://docs.second.tech/ark-protocol/forfeits-connectors/">https://docs.second.tech/ark-protocol/forfeits-connectors/</a> 2026-02-08T12:00:07Z https://njump.me/nevent1qqs8r3lcvr0g2t2kcfcckch25q5qmfvg3kkz68agnhp660jsawj2hwszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj4mktud Refreshes on Bark no longer use connectors for atomicity, that&#39;s now handled by good ol&#39; hash-locks. Confusingly, on-chains payments now use connectors instead, which are no longer handled alongside refreshes! 2026-02-08T12:00:02Z https://njump.me/nevent1qqsvxf97pr7vr6fcdmv7uelddy7jc57g2wsdqzkg3klh0pptqf32r6gzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj0js2ee Bark&#39;s new unified mailbox consolidates all wallet notifications into a single feed: Ark payments, Lightning preimages, BOLT-12 offers, and refresh completions. Checkpoint-based sync fetches only what&#39;s changed.<br/><br/> <img src="https://uploads.postiz.com/0d092f88832549d5b10e437ac9d30c6a.png"> 2026-02-07T12:00:02Z https://njump.me/nevent1qqs0t7ty084q5h8he40w385m4fdvx9pzfrtcy7ndt8dy3agr2vjfj9czyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj4c6zm9 Taproot happened because Lightning proved the need for it. The best way to get covenants is for Ark to prove the need for them too. 2026-02-06T12:03:00Z https://njump.me/nevent1qqstt8fr8kf5ka8gxas4cgeypkq8eeg86y26gn6y20ntf5ggfvm5rqgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjdv9tkt We chose honggfuzz over libfuzzer for fuzz testing bark. libfuzzer is simpler to set up, but honggfuzz gives us more flexibility for complex targets down the road. And it&#39;s what rust-bitcoin uses, so we can borrow from their what they&#39;re doing! 2026-02-06T09:20:14Z https://njump.me/nevent1qqswv3vpymysl4endclatsj0p3hp8mu2vh6cpenrk7y83p9tw7rk6fqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjmusa3r The Ark protocol is not constrained by the need to standardize across implementations like Lightning. This means that each implementation is react fast to users&#39; needs. 2026-02-05T12:00:02Z https://njump.me/nevent1qqsq3e22fcga264cg65rjjj2w2p4h28x6gl5g4f4knnfjk8g5gd53mgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjhrd6p5 Ark&#39;s transaction trees feel exotic until you realize they&#39;re just cleverly arranged standard bitcoin transactions. No special opcodes needed. Just signatures, timelocks, and multisigs held off-chain.<br/><br/> <img src="https://uploads.postiz.com/e6c19fdd112444f4917c24cfd8a78914.png"> 2026-02-04T12:38:05Z https://njump.me/nevent1qqsv5lzd3acwj2xkh65zv0cxum2au9s0nnsc3chv4wu853sgevheepczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjtjygkx We&#39;ve released bark-0.1.0-beta.6 featuring hArk (Hash-lock Ark), a major protocol evolution that eliminates synchronous interactivity during rounds. Previously, all round participants had to be online simultaneously to sign intermediate transactions. hArk removes this requirement—the server generates a unique secret for each VTXO, and participants can claim asynchronously after signing a forfeit transaction.<br/><br/>This also enables efficient consolidation of multiple VTXOs into a single output and reduces server costs during malicious exit scenarios.<br/><br/>Note: Wallets created before this release require migration due to security upgrades with hardened key derivations. Create a new wallet and transfer funds before upgrading.<br/><br/>Lots more updates on the changelog: <a href="https://docs.second.tech/changelog/changelog">https://docs.second.tech/changelog/changelog</a><br/> <img src="https://blossom.primal.net/0566eb86f243bc834af335a15c335a5d209eb9c046c83b2bcada7471a3897516.jpg"> 2026-01-25T12:35:29Z https://njump.me/nevent1qqsf3rlcyn3ur7ama697em7q27uujlrgunrjtd5upae2jthv7nkntngzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj68lwq8 The Ark model of Lightning: Users hold &#34;funds at rest&#34; in VTXOs, then swap into Lightning channels via HTLCs to make payments. 2026-01-19T16:13:37Z https://njump.me/nevent1qqsprwaff07cscj3qze0rm4kx9nemzvvj76j505yll5yugq0vm3e7xgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjx3klja <img src="https://blossom.primal.net/88e37003d7e91f4a2bf49e56cde63f714ab98aaac912a66dbfc0e1ee5e49ba18.jpg"> <br/>Latest changelog for bark 0.1.0-beta.3 to beta.5 is out!<br/><br/>The biggest addition is barkd—a wallet daemon with RESTful API for node runners and businesses wanting simple automation. We&#39;ve also made ark-lib WASM-compatible for web environments, replaced the arkoor-depth limitation with checkpoints, and improved Lightning payment reliability.<br/><br/>Full changelog: docs.second.tech/changelog/changelog 2026-01-09T12:51:47Z https://njump.me/nevent1qqsx5af928gcdgnwczns7xkl0evzwyy6f9rnqktzd42vxevp6ch0s5qzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjeettvc Added <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyw8wumn8ghj7mn0wd68yttjv4kxz7fwwak8vuewwdcxzcm9qythwumn8ghj7mn0wd68ytnxd46zuamf0ghxy6t6qqszrxpsgd8lqjlt25xrsahxvjt53cvhqklxujhzwr946ehm3c3x7vgqm5upd" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>psycarlo</span> (<span class="italic">nprofile…5upd</span>)</a></span> to the team for DevRel. He showed up, immediately fixed up our faucet, and is already close to shipping a Bark web wallet. Also runs bitcoin education content in Portuguese and contributed to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy2hwumn8ghj7cnvv9ehgu3wvcmh5tnc09az7qgdwaehxw309a38yc3wd9hj7qpqdhfmwt3jtknnswe8tmh3cesnrwjxvsexu93tcps9yagfkn3n4eps4zyu05" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>satsigner</span> (<span class="italic">nprofile…yu05</span>)</a></span> + <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy48wumn8ghj7ctyveshxenpwdnxzernv3nxzumxv9ekvve3xgengvfjv4mkvctn9eu8j7spr4mhxue69uhkummnw3ezumtfv3jxc6twvuhx67tydeeju6nsqqsrarmeyupnwtmh6svjjnreml5szym79sgwvlucdaeyk8u3zyfwx0stqsjxk" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>medusa_maxfy</span> (<span class="italic">nprofile…sjxk</span>)</a></span>. Welcome Carlos (follow him for updates!) 2026-01-08T09:12:43Z https://njump.me/nevent1qqsqu7l47etc35ffrk7vurrczrdsyfz6lmp0gjx0xyygmdclzr2mstgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj22frh0 Before joining Second, <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqy0hwumn8ghj7mn0wd68yttjv4kxz7fwvf5hgcm0d9hzumnfde4xzqpqgxr0nutz03u7rgquguq2sk24nzygtvq08a5malyu4epjaxhzae8q65hmk7" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>dunxen</span> (<span class="italic">nprofile…hmk7</span>)</a></span> did stellar work with <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcqyzxy3sjmjn0jwp4hq2gpc24mtkq9cgkyff2t0ufpcums0cr378gas5c4mnp" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Btrust</span> (<span class="italic">nprofile…4mnp</span>)</a></span> on Lightning protocol development. Nice profile on his work below.<br/><br/>&#34;Being a grantee at Btrust was, first and foremost, the best grantee experience I had throughout my grant-funded open source development career so far.&#34;<br/><br/><a href="https://blog.btrust.tech/celebrating-duncan-deans-journey-with-btrust/">https://blog.btrust.tech/celebrating-duncan-deans-journey-with-btrust/</a> 2025-12-30T09:48:30Z https://njump.me/nevent1qqsw28azh5fjgyz92pswsj2sfyrw46z0zvgaa392vqumlyf2k77n42gzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjvrzvmx In reply to <a href='/nevent1qqs9d0jnq0x2fuun62nskwtlp0wcwh8fryxcws78vtp7hvpcas4hftqpr9mhxue69uhkuurjdau8jtntwf5hxarpwpekktnvwcckwh3p'>nevent1q…wh3p</a><br/>_________________________<br/><br/>Full three-minute update here: <a href="https://www.youtube.com/watch?v=b-aZlS7a6NM">https://www.youtube.com/watch?v=b-aZlS7a6NM</a> 2025-12-29T12:13:24Z https://njump.me/nevent1qqs9d0jnq0x2fuun62nskwtlp0wcwh8fryxcws78vtp7hvpcas4hftqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjwepdtt Rapid progress being made by <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqywhwumn8ghj7mn0wd68yttsw43zuam9d3kx7unyv4ezumn9wsqzpde3ulaauhqe94unlafq5mkfra5ktawclgdkfcfpwyyf5e09gpf9xf2hhn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>GBKS</span> (<span class="italic">nprofile…2hhn</span>)</a></span> with his Bark-based Arké wallet, which now has an iOS companion under development to complement the macOS app.<br/><br/> <img src="https://blossom.primal.net/495ae75338fd9f47aaefbebcd0f79a795089c2f67927494e652a26d16a07b298.png"> <br/><br/> <img src="https://blossom.primal.net/751d3e42faaec6a33bac97cd05a1ec452e3788fad62f34a3965d376957172d4b.png"> 2025-12-29T12:12:49Z https://njump.me/nevent1qqspm9tpkqdaktc8dk5yglfvxt9v98wdkxmf2u4scf66mjrhrcgkuygzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjzxlw6m Our software is all open source, with one conspicuous exception. We fixed that today (after a bit of spring cleaning!). The code for our signet faucet and test store is now available on GitLab!<br/><br/><a href="https://gitlab.com/ark-bitcoin/faucet">https://gitlab.com/ark-bitcoin/faucet</a><br/><br/> <img src="https://blossom.primal.net/80b481e9020178b52a03938257b748577e94c610644dc8c4a1a00bd905091a9b.png"> <img src="https://blossom.primal.net/18360fb9e7f951507902a7b195b853a9b822acd3729662f5abf14aa79070e23c.png"> 2025-12-29T09:19:32Z https://njump.me/nevent1qqsfge528zctn0dya2ca5xkgn0fmxwq06l26r8ylsntej5e8jx8s30czyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj3ppv75 Merry Christmas! Wishing you a peaceful holiday from everyone at Second (and Byte).<br/><br/> <img src="https://pbs.twimg.com/media/G9BhufyW8AAa3t0.jpg"> 2025-12-25T15:15:05Z https://njump.me/nevent1qqs0fjtkku4ctdwz5cv0znt8800trmfr5hnqc9ffzke2h8zcaj8zzhszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj0w0nmu Ark is how you prepare and we’re making it easy.<br/><br/><a href="https://twitter.com/notgrubles/status/2000341545321632144">https://twitter.com/notgrubles/status/2000341545321632144</a> 2025-12-15T07:14:03Z https://njump.me/nevent1qqswlyq0d0awgrjtctzrcc8f3vlspnv93eculz5ngwtxjef80k920wszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj30y9tf We&#39;ve been wanting nested MuSig for a while now, so we can distribute Ark server keys and improve security. The problem is, it&#39;s specialized cryptographic work that we probably don&#39;t have within the team.<br/><br/>Jesse Posner (Vora founder) approached us with a solution: fund a grant for Beulah Evangelin to build it. Beulah&#39;s already contributing to secp256k1-zkp, just finished Chaincode Labs&#39; secp256k1 workshop, and is perfect for the job.<br/><br/>So we&#39;re funding the grant. Jesse/Vora will provide ongoing mentorship. And Beulah&#39;s nested MuSig implementation will go into libsecp256k1-zkp as open source, so any project can use it. It&#39;s going to be particularly valuable for layer 2s, e.g., Vora needs it for their Lightning implementation too.<br/><br/>Full details: <a href="https://blog.second.tech/nested-musig-grant/">https://blog.second.tech/nested-musig-grant/</a><br/><br/> <img src="https://blossom.primal.net/04bf89134f46a525d5d1ff2c077f160899da76e77cc1f8a95921a7c62a7390d3.jpg"> 2025-12-11T13:58:19Z https://njump.me/nevent1qqsxk4vyx6qukpah2y4u34l3fvjcwngym5v4sf3erzcmxjmq4g5697czyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj8fcyse Attack, attack!<br/><blockquote class="border-l-05rem border-l-strongpink border-solid"><div class="-ml-4 bg-gradient-to-r from-gray-100 dark:from-zinc-800 to-transparent mr-0 mt-0 mb-4 pl-4 pr-2 py-2">quoting <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Article"><a itemprop="url" href="/nevent1qvzqqqqqqypzq3e0gs8jnmued6f2rp4c6vs07xqvs4vs8zpwt82smcdch4txjvq7qqsf3lxnzj43g8n6weysjsaj6w4pjr49t6lvat37xs59n5lq2qwaussh7rdnn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1">nevent1q…rdnn</a></span> </div> A lot of victim mentality from bitcoiners during this chopsolidation phase.<br/><br/>Stop complaining. Attack.<br/><br/>Get your bitcoin off the exchange. Teach others how to self custody. Convince your local Square merchant to turn bitcoin payments on. Move your life to a bitcoin standard. </blockquote> 2025-12-04T11:42:08Z https://njump.me/nevent1qqsp9canjp05alx324qp28farzlfcgtvd0yqjwqrl53xej9k4zzqnzszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj2cclmf We&#39;re hiring.<br/><br/>Like tinkering on bitcoin software? We need someone to help us build app prototypes and POCs on Bark. Non-stop &#34;hackathons&#34;, publishing open-source, and posting your progress publicly.<br/><br/>Normally bitcoin companies need to be cautious with vibe coding. For this role, we want you to go nuts with it.<br/><br/>More details and application link at <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qqsvwegzupdp6c3aehjrkruyv7wf905m54krvq86ynu5u99t36yehdcxqs7a2" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>BitcoinerJobs</span> (<span class="italic">nprofile…s7a2</span>)</a></span>: <a href="https://bitcoinerjobs.com/job/1975320-devrel-engineer-second">https://bitcoinerjobs.com/job/1975320-devrel-engineer-second</a> 2025-12-04T11:03:38Z https://njump.me/nevent1qqsyj8xfa43kqws6u5ra8pswfcyklqwyw77tp4qxx7wn368lthhyv4qzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjnxj2k7 If you&#39;re in Mauritius for @`Btrust`&#39;s Dev Day tomorrow, don&#39;t miss @`dunxen`&#39;s session on how Bark makes adding self-custodial Lightning to your apps simple.<br/> <img src="https://blossom.primal.net/2310b78f4ace92f4f5b8f1ed3d4dde1cba8a4960fdb0ff1a80485fa5b0883c2e.jpg"> 2025-12-01T07:10:44Z https://njump.me/nevent1qqsxacargmnhq2gz8hhx9y3gql9uf7g9ekvqt377wnujktdh4a076eszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjk9txfa Another new project building on Bark. <img src="https://blossom.primal.net/6baa5c041d36d7ed474f71ceca2ed2b2f2611bbeab633a4d9b57085869f3b41b.png"> <br/><br/><a href="https://github.com/HalFinneyIsMyHomeBoy/bark-wallet-frontend">https://github.com/HalFinneyIsMyHomeBoy/bark-wallet-frontend</a> 2025-11-28T08:53:08Z https://njump.me/nevent1qqsf39sxh8py6evgd9v7qnn968nf3ayz4cxklp0npc0k5h6fn93scmczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkju8drpv Some really neat send payment UX going into <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7mn0wvhxcmmvqywhwumn8ghj7mn0wd68yttsw43zuam9d3kx7unyv4ezumn9wsqzpde3ulaauhqe94unlafq5mkfra5ktawclgdkfcfpwyyf5e09gpf9xf2hhn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>GBKS</span> (<span class="italic">nprofile…2hhn</span>)</a></span> Arké wallet, based on some patterns established in <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/nprofile1qyxhwumn8ghj7cnjvghxjme0qyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcqyzxznvep6reuvy6r3qh2f93raprhz6gv6ptxus9epuywt56rx642qa309x5" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Bitcoin Design</span> (<span class="italic">nprofile…09x5</span>)</a></span>. By integrating with Bark, a wide range of payment formats are available immediately across Lightning, Ark, and on-chain.<br/><br/>Video demo of Arké&#39;s send page dynamically reacting to what&#39;s held in the clipboard—fewer clicks and less to think about for the user: <a href="https://www.youtube.com/watch?v=S-c8DuGe9Qk">https://www.youtube.com/watch?v=S-c8DuGe9Qk</a> 2025-11-28T08:49:20Z https://njump.me/nevent1qqs0alueq0gwga0xtkl5f93mha3fyyyv5kla3suxn34yqemdneyvjdczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj5m7cdu Why Rust? Memory safety isn&#39;t optional when you&#39;re handling people&#39;s bitcoin. Type safety catches bugs at compile-time that would be runtime disasters in other languages. Performance matters too when you&#39;re processing hundreds of signatures per round. 2025-11-27T17:05:14Z https://njump.me/nevent1qqstqq6te7syjat4j8ur06q38km4v4uxq4svzha99yuqct7zy3nn9dqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjxe6vxz Self custody is going to get a lot easier.<br/><br/><a href="https://twitter.com/getalby/status/1993340551047827784">https://twitter.com/getalby/status/1993340551047827784</a> 2025-11-25T15:52:26Z https://njump.me/nevent1qqsy5pyk35fvmdq2722rn7epdyahakeaja6wcyk9j37ywynlpygyrwgzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjg5c85x The LSP business model has issues—high capital requirements, unpredictable revenue, complex liquidity management. Ark servers are simpler to operate and more capital efficient for similar use cases. We expect competition between the two models will drive better services for users. 2025-11-19T13:07:01Z https://njump.me/nevent1qqsvwsfrvv5kr9f4cwcze4ekjlutwn6jhazvzju76vauv3dm4c9drgszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjd2yyty Open source means anyone can fork our code and improve. We want that. If someone builds improvements on our Ark implementation, the ecosystem wins. Competition between implementations drives quality up for everyone. 2025-11-17T13:07:02Z https://njump.me/nevent1qqsphley38zgw0nfys0k3fjh0k40wzl9h2vnzcje9py4dz79c5h5wpszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjdeq2n5 New updates from the Bark-based Arké wallet:<br/><br/>- Tight integration with macOS&#39;s Contacts app (handled locally and privately!).<br/>- Improved tagging management UX<br/>- Lots of design refinements across send and receive<br/><blockquote class="border-l-05rem border-l-strongpink border-solid"><div class="-ml-4 bg-gradient-to-r from-gray-100 dark:from-zinc-800 to-transparent mr-0 mt-0 mb-4 pl-4 pr-2 py-2">quoting <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Article"><a itemprop="url" href="/nevent1qvzqqqqqqypzpde3ulaauhqe94unlafq5mkfra5ktawclgdkfcfpwyyf5e09gpf9qy88wumn8ghj7mn0wvhxcmmv9uq3uamnwvaz7tmwdaehgu3dwp6kytnhv4kxcmmjv3jhytnwv46z7qpqh62uw9l4csfpqa9fgf5kz6c45f60hhrtqca80g4t7rnqt8jh0wpssjuksv" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1">nevent1q…uksv</a></span> </div> Arké update 4, about native contacts, contact auto-assignment, a new console, and lots of little layout and convenience things. Still a major construction site, still progress. <a href="https://community.second.tech/t/arke-macos-prototype/156/9">https://community.second.tech/t/arke-macos-prototype/156/9</a><br/><br/>I saw some people comment on the BIP-177 by default thing. Something I plan to get around to at some point and add options to choose from. Just not priority right now. </blockquote> 2025-11-17T08:28:54Z https://njump.me/nevent1qqsflnm0kpdxqkys83xma75ljdwcfutmudcx8f2723pnv4c2euxzvpqzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj6vmk2z Our goal isn&#39;t replacing Lightning. It&#39;s ensuring every bitcoin user can access Lightning without needing to become a node operator. Ark is the gateway—you hold a self-custodial balance, pay Lightning invoices when needed, no channel management required. 2025-11-16T13:07:00Z https://njump.me/nevent1qqsxnymzg2sm4fqxxdj9j4xjk38z05fq5m9ymjpe2877hm37lh8e2tczyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjmn05wp During a round, the Ark server + users construct a tx tree. Each leaf of the tree is controlled by a single user.<br/><br/>The root of the tree is broadcast on-chain (the round tx). Once confirmed, each user has verifiable assurance they can unilaterally retrieve their bitcoin on-chain.<br/><br/> <img src="https://pbs.twimg.com/media/G5zE0vzW4AAz6J5.jpg"> 2025-11-15T13:07:02Z https://njump.me/nevent1qqsvs66d73qsnjvs9df6j4zmqxsn2rekq4dfu2uqkj4qklfp44sz5egzyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkj3d2duy We&#39;ve released bark 0.1.0-beta.2—our second beta release. This update simplifies VTXO state management, enhances UX with immediate VTXO availability, and makes wallet integration easier with non-mutable API methods.<br/><br/>Note: The VTXO state simplification and BlockRef representation changes may require code updates if you&#39;re building on the bark API or CLI.<br/><br/>Highlights: VTXOs are now usable within the same round they&#39;re created (no more waiting!), VTXO states reduced from many to just three (Spendable, Locked, Spent), nearly all Wallet methods are now non-mutable for easier integration, Lightning receives are faster and more secure, and on-chain spends automatically refresh VTXOs by default.<br/><br/>Full changelog: docs.second.tech/changelog/changelog 2025-11-13T16:57:41Z https://njump.me/nevent1qqsq3kjv726qs7r5sdpuc0puv96f6ngye5a2rn2gj70q38zqsk9tktszyrkm9u5erfvkd8fzzzrn05dmhm937edf95j2pdj0qk692l9qv5jkjdhsjhq Kept you waiting, huh? <br/><br/>(We&#39;re finally on Nostr)<br/><br/> <img src="https://blossom.primal.net/18b43db02866a49538757c6abc31e84b293680728507dd0182242323c9b819d8.jpg"> 2025-11-13T11:59:46Z