@secondhq

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

second.tech
Joined June 2024
  • Tweets1.9K
  • Following649
  • Followers3.6K
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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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Carlos Marques
@2ndpsy11h
Would you use this Bark browser extension?
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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_walletOct 22
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 👇
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Another great payment app built with Bark. (don’t worry, despite the name it’s not another Ark implementation!)
THâRK@Thark_walletOct 22
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 👇
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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.
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PiHiker⚡
@PiHikerOct 23
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 gitlab.com/arkpool

ArkPool · GitLab

GitLab.com

gitlab.com
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A: Fast frequent free and fullyselfcustodial
grubles
@notgrublesOct 22
What would Ark payouts for a mining pool look like?
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grubles
@notgrublesOct 22
What would Ark payouts for a mining pool look like?
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Here's how arkoor payments make a VTXO's exit path longer, and how a refresh shortens it again 👇
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Our diagrams are evolving…
Carlos Marques
@2ndpsyOct 19
VTXO tree and Unilateral exit, visualized.
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grubles
@notgrublesOct 20
Watch an Ark exit watchtower publish presigned unilateral exit transactions for a user while they've been offline too long to refresh their VTXOs. Demo is on regtest. Signet deployment soon.
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Building the Bark plugin for @BtcpayServer, I keep spotting things to improve. I don't ignore them, I open a PR. 4 PRs merged upstream so far. It ain't much, but it's honest work 🧑‍🌾
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grubles
@notgrublesOct 19
New UI is up! labs.second.tech/swaptopia
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grubles
@notgrublesOct 19
Hoping to have a public signet Ark exit watchtower up and running this week so folks can test offline exiting for themselves.
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Zappin is a new social app from Japan 🇯🇵 >"In addition, it is equipped with a Bitcoin Ark wallet, which can be used to send bitcoins to posts and to make payments in stores."
むらぴぃ@⚡₿⚡🇯🇵⛵️
@mura0306Oct 19
募集してるってよ！ Zappin ベータテスター募集 📱 by Yuya @ogw_yuya spotlight.soy/detail?article…

Zappin ベータテスター募集 📱

Zappinは、地図を見ながらローカルスポットや情報を投稿・共有できるSNSアプリです。さらに、ビッ

spotlight.soy
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Silent Pool by @avg_gary build on his Delving post from August 2026 ⛏️ MINING PROJECT Silent payments is being used to derive an Ark mining-payout address. delvingbitcoin.org/t/silent-… delvingbitcoin.org/t/silent-…
avg_gary
@avg_garyOct 13
github.com/average-gary/sile…

GitHub - average-gary/silent-pool: SPc + Ark one-identity mining payouts: BIP352 silent-payment...

SPc + Ark one-identity mining payouts: BIP352 silent-payment coinbase outputs above dust, Ark (bark) arkoor below, derived from one per-block ECDH. Regtest-validated against a stock bark server. - ...

github.com
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Bark plugin is live in the @BtcpayServer directory plugin-builder.btcpayserver.…
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What if your bitcoin wallet had no buttons at all? Just your balance. Hold, say what you want, done.
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PiHiker⚡
@PiHikerOct 16
ArkPool Gateway v1.0.0:8 for StartOS is live ⚡ 🧅 Redundant Tor-only mining paths ⛏️ Private gateway for Bitaxe and Stratum V1 miners 🔄 Safer in-place service upgrades 🔐 Preserves settings, Tor/TLS identities, share history and dashboard credentials 🧰 Updated to StartOS SDK 3.0.6 ✅ Tested on StartOS 0.4.0.2 Download: gitlab.com/arkpool/arkpool-g… 🌐 arkpool.org

ArkPool Gateway for StartOS 1.0.0_8 · ArkPool / Arkpool-gateway-startos · GitLab

ArkPool Gateway for StartOS 1.0.0:8 Released 2026-10-16. This...

gitlab.com
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I love this project. Easy pay-outs for plebminers
PiHiker⚡
@PiHikerOct 16
ArkPool Gateway v1.0.0:8 for StartOS is live ⚡ 🧅 Redundant Tor-only mining paths ⛏️ Private gateway for Bitaxe and Stratum V1 miners 🔄 Safer in-place service upgrades 🔐 Preserves settings, Tor/TLS identities, share history and dashboard credentials 🧰 Updated to StartOS SDK 3.0.6 ✅ Tested on StartOS 0.4.0.2 Download: gitlab.com/arkpool/arkpool-g… 🌐 arkpool.org

ArkPool Gateway for StartOS 1.0.0_8 · ArkPool / Arkpool-gateway-startos · GitLab

ArkPool Gateway for StartOS 1.0.0:8 Released 2026-10-16. This...

gitlab.com
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People say @arkade_os and @secondhq aren't compatible, but my agents used Bark to fund an escrow at Agent Escrow creating a 2-of-3 escrow contract on Arkade, and then the contract settled back to their Bark wallets. Good thing swap services like @satora_io exist!
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