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Second

@secondhq

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

651 Following3.6K Followers1.9K Posts
  1. Second@secondhq
    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.
    Download
    288830390.3K
  3. Second@secondhq
    Second
    RT @gpvansat: New on satsforbots: bark-mcp by @secondhq 🆕 An MCP server that gives your agent a Bark wallet to pay Lightning invoices and L402 APIs, with spend caps and confirmation guardrails. Note: it runs on Ark, not a Lightning node. @notgrubles
    02025
  4. Second@secondhq
    Second
    RT @gpvansat: New on satsforbots: Bark by @secondhq 🆕 A self-custodial Ark wallet your agents can drive over a local REST API, paying and receiving over Lightning (BOLT11, BOLT12, Lightning addresses). Note: it runs on Ark, not a Lightning node.
    05037
  5. Second@secondhq
    Takes all the pain out of accepting Lightning on your BTCPay store.
    Carlos Marques @2ndpsy
    Accept Lightning on @BtcpayServer without a Lightning node, channels or inbound liquidity to manage. My favorite BTCPay plugin. I might be biased 😁
    04191.3K
  6. Carlos Marques✓@2ndpsy
    Accept Lightning on @BtcpayServer without a Lightning node, channels or inbound liquidity to manage. My favorite BTCPay plugin. I might be biased 😁
    Download
    35292.4K
  7. Second@secondhq
    1/ Bark 0.8.0 is out. Restoring a wallet from its mnemonic is now much faster and more reliable. A restore asks for every VTXO under the wallet's xpub, so a restore works without the key gap limit or a backup. A restore that took 210 seconds will now take 60.
    Download
    19171.3K
  8. Second@secondhq
    Posts @secondhq
    5/ The emergency exit fee estimate is now deterministic. It comes from transaction weight at your chosen feerate with a fixed margin, and it works with any on-chain wallet, not only Bark's own, so the number is the same every time you ask.
    10246
  9. Second@secondhq
    Posts @secondhq
    6/ Lots more in this release, including crash-safe VTXO locks, exits that report when the server swept their VTXO, and breaking changes to read before you upgrade. Full changelog:
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  10. Second@secondhq
    Lots of value here if you’re building a new bitcoin project.
    Carlos Marques @2ndpsy
    Just updated our Labs demos so you can point your agents to the latest examples and get started faster! Check them out: Gitlab:
    0311516
  11. Carlos Marques✓@2ndpsy
    Just updated our Labs demos so you can point your agents to the latest examples and get started faster! Check them out: Gitlab:
    Download
    0391K
  12. Second@secondhq
    Second
    RT @notgrubles: This video is like science fiction from Bladerunner or something. I'm blown away tbh.
    Matthew Vuk 🛳️ @matthewvuk2
    I connected Tessa (初音ミク) to Bark (@secondhq) so that she can make vocal agentic payments for me 🎙️✨ She bought me a @nadanada_me VPN so that we can access geo-blocked Japanese Nostr 🇯🇵 and then she told me the top discussions happening there (@bitcoin_resjp)
    02026
  13. Second@secondhq
    Second
    RT @matthewvuk2: I connected Tessa (初音ミク) to Bark (@secondhq) so that she can make vocal agentic payments for me 🎙️✨ She bought me a @nadanada_me VPN so that we can access geo-blocked Japanese Nostr 🇯🇵 and then she told me the top discussions happening there (@bitcoin_resjp)
    09029
  15. Second@secondhq
    Second
    RT @matthewvuk2: The “Tando”of Thailand is live, powered by Bark! 🇹🇭 Pay any QR code in Thailand. Seller receives local Bhat (฿) Built as a fork of Noah Wallet with @CashuBTC support
    THâRK @Thark_wallet
    Thârk is live 🇹🇭 Pay any Thai PromptPay QR with bitcoin, even at shops that have never heard of it. A local taker pays in baht, you pay in sats. Open source (MIT), Android beta APK ready to try. Want to test it ? Links below 👇
    08031
  16. THâRK@Thark_wallet
    Thârk is live 🇹🇭 Pay any Thai PromptPay QR with bitcoin, even at shops that have never heard of it. A local taker pays in baht, you pay in sats. Open source (MIT), Android beta APK ready to try. Want to test it ? Links below 👇
    Download
    62242.8K
  17. Second@secondhq
    Another great payment app built with Bark. (don’t worry, despite the name it’s not another Ark implementation!)
    THâRK @Thark_wallet
    Thârk is live 🇹🇭 Pay any Thai PromptPay QR with bitcoin, even at shops that have never heard of it. A local taker pays in baht, you pay in sats. Open source (MIT), Android beta APK ready to try. Want to test it ? Links below 👇
    1319663
  18. Second@secondhq
    Posts @secondhq
    From the README: ท่า (thâ), the Thai word for a pier or boat landing, the place where ferries cast off to cross the river. The circumflex in Thârk echoes its falling tone.
    002142
  19. Second@secondhq
    Second
    RT @PiHiker: ArkPool security update ⚡🧅 🛡️ Audit fixes across gateway + firmware ⛏️ Updated 403, 601 & 601a firmware 🟢 StartOS v1.0.0:9 released + checksum verified 🧹 Noise secrets zeroized and excluded from logs 🧅 Safer Tor recovery and tighter privacy defaults 📦 OpenSSL, Node, Angular, Vite & Vitest updates ✅ Green CI
    03030
  20. Second@secondhq
    A: Fast frequent free and fullyselfcustodial
    grubles @notgrubles
    What would Ark payouts for a mining pool look like?
    0211757
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