Simple developer solutions for integrating bitcoin payments into your apps. Fast, low-fee, self-custodial. Supports Lightning, Ark, and on-chain.

Joined June 2024
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Pinned Tweet
SECOND IS NOW ON MAINNET. Bark, our implementation of the Ark protocol, is available for anyone to start making bitcoin payments. Included in the launch are our mainnet Ark server, the Bark SDK, and multiple wallets to try from day one.
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Bitcoin Ark B-Ark Bark ๐Ÿถ
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Bark fixes this. (Inbound liquidity problem in Lightning)
Replying to @coinjoined
Next up, @matthewvuk2 and @luca0x46 of @secondhq are unveiling their Ark integration for @BTCPayServer. Merchants can now accept Lightning payments, automatically receive funds as VTXOs, store them locally, and withdraw on-chain whenever they choose. No channels. No inbound liquidity management. Just a simpler path to accepting Bitcoin payments. Ark solves one of Lightning's biggest usability challenges: inbound liquidity.
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If youโ€™re in Prague, donโ€™t miss @matthewvuk2 and @luca0x46โ€™s demo at @BtcpayServer Day today.
Today is the day we premiere our Bark integration for BTCPayServer. This will allow any merchant to start accepting lightning payments, store them as VTXOs on disk, and withdraw their earnings to onchain. Ark solves the inbound liquidity problem.
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Itโ€™s a long game but step by step, block by block, together we will make bitcoin everyday money. The future is forged by those who will it into existence.
Just got to experience this UX for the first time and it was awesome. I was about to ask the cashier if I could pay in bitcoin but then I noticed the little toggle in the top left corner and switched it to a bitcoin invoice myself. Stealthy bitcoin payments hit different.
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ArkAPI.dev is officially live on Mainnet! ๐Ÿš€ We've migrated the entire pay-per-call API platform, including Telegram bot! Lightning and native Ark payments are fully operational! Thrilled to be part of the journey! Congrats to the dev team at @secondhq!
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Jun 13
Alby Hub represents a "third way" to integrate Bark into your wallet apps and services, alongside the Bark SDK and barkd.
Replying to @getAlby
Read more about our Ark implementation on our blog getalby.com/blog/introducingโ€ฆ
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"Everyone is talking about Bark"
โšก๏ธNEW: Everyone is talking about Bark Protocol but how does it actually work? ๐Ÿ‘€ Get up to speed with our guide including links to all docs and additional resources. ๐Ÿ‘‡ x.com/LightningNewsX/status/โ€ฆ
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Shopping the new @spacebull @madexforever collection at the @BULLBITCOIN_ booth in Prague using Noah wallet. Self-custody lightning. No channels. No sidechains. Love the clothes, great cut on the sleeves.
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Install Bark Wallet on your Umbrel! ๐Ÿถ
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Whoop whoop!! Super hyped for this one! I've been close with the Alby team for quite a while and they have always been example to us when it comes to being true to their values and rejecting non-sense.
Jun 12
1/ Bark is now a Lightning backend option in Alby Hub. @getAlby built the integration on the Bark SDK in record time, just days after our mainnet launch. You can now enable Lightning payments in your hub with no Lightning node, channels, or liquidity to manage.
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one of the coolest things about being on Alby Hub is that thanks to the interoperability of the nostr protocol and the NWC protocol, Second just essentially integrated Bark with a massive ecosystem of nostr enabled applications at once. keep building.
Jun 12
1/ Bark is now a Lightning backend option in Alby Hub. @getAlby built the integration on the Bark SDK in record time, just days after our mainnet launch. You can now enable Lightning payments in your hub with no Lightning node, channels, or liquidity to manage.
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This wasn't planned for our launch week but @rolznz rolled it out so fast it got in comfortably. It's the first time an engineer has told me it'd take two weeks(TM) and delivered in ~3 days.
Jun 12
Itโ€™s been an absolutely amazing experience working with the @secondhq team to get bark into @getAlby hub. They are a super smart team with great focus. Lightning is going to win โšก๏ธ
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Bark Wallet on @umbrel
Replying to @secondhq @umbrel
Seemless so far.
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Jun 12
Your agent can also setup your @getAlby hub with a @secondhq bark backend and create @nwc_dev connections for you! Use your favorite agent, Claude, Codex, etc. Here I used Pi agent with a local LLM.
Replying to @getAlby
You can now run self-hosted Alby Hub with Ark (Bark by @secondhq), and connect it to apps within a vast @nwc_dev ecosystem. See how you can connect to mobile Alby Go in just 20 seconds!
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You can now run the flagship NWC wallet โ€” Alby Hub โ€” with Bark (Ark Layer 2). No need to maintain your channels anymore (If you don't want to!)๐Ÿ
Alby Hub 1.23 release codenamed "Tim Hudson" is out! ๐Ÿถ Ark (Bark by @secondhq) backend - Beta ๐Ÿงช Just-In-Channels ๐Ÿ’ณ Cards page ๐Ÿ’ฑ Fiat and bitcoin units toggles in currency inputs ๐ŸŽฅ "Stories" widget for releases videos & highlighting Hub's features Letโ€™s dive in ๐Ÿงต...
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I might be biased, but it seems incredibly easy to build on bark ๐Ÿคฏ๐Ÿคฏ๐Ÿคฏ
Jun 12
1/ Bark is now a Lightning backend option in Alby Hub. @getAlby built the integration on the Bark SDK in record time, just days after our mainnet launch. You can now enable Lightning payments in your hub with no Lightning node, channels, or liquidity to manage.
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Jun 12
Itโ€™s been an absolutely amazing experience working with the @secondhq team to get bark into @getAlby hub. They are a super smart team with great focus. Lightning is going to win โšก๏ธ
Jun 12
1/ Bark is now a Lightning backend option in Alby Hub. @getAlby built the integration on the Bark SDK in record time, just days after our mainnet launch. You can now enable Lightning payments in your hub with no Lightning node, channels, or liquidity to manage.
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Jun 12
Bark added in the latest @getAlby release. Possibly the simplest way to add self-custodial Lightning to all your NWC-connected apps.
Alby Hub 1.23 release codenamed "Tim Hudson" is out! ๐Ÿถ Ark (Bark by @secondhq) backend - Beta ๐Ÿงช Just-In-Channels ๐Ÿ’ณ Cards page ๐Ÿ’ฑ Fiat and bitcoin units toggles in currency inputs ๐ŸŽฅ "Stories" widget for releases videos & highlighting Hub's features Letโ€™s dive in ๐Ÿงต...
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Jun 12
1/ Bark is now a Lightning backend option in Alby Hub. @getAlby built the integration on the Bark SDK in record time, just days after our mainnet launch. You can now enable Lightning payments in your hub with no Lightning node, channels, or liquidity to manage.
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4/ If you're building a wallet app, @getAlby Hub also opens up a new third way to build on Bark (alongside the Bark SDK and barkd). Any app that already speaks @nwc_dev can now be powered by Bark with zero integration work. github.com/getAlby/builder-sโ€ฆ
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Jun 12
5/ If you're already running Alby Hub, you'll find the Bark option under the "Advanced Setup" settings. If you don't have Alby Hub yet, you can get it on the @umbrel and @start9labs app stores, or host it on your own hardware. More details on the blog: blog.second.tech/bark-powersโ€ฆ
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