Second
@2ndbtc
Simple solutions for integrating Ark and Lightning payments into your apps. Painlessly deliver fast, low-cost, self-custodial payments to your users.
1/ Today we're launching our implementation of the Ark protocol on signet! This is our first major step toward bringing Ark to bitcoin mainnet, and we're inviting developers to help us test, explore, and break things (preferably in that order).
Arkoor: short for "Ark out-of-round"—the method used for spending on Ark. Arkoor enables payments to be made at any time (no need to wait for a round). Received payments support unilateral exit, assuming no sender-Ark server collusion. Refresh in later rounds for trustlessness.
When a user triggers a unilateral exit, their wallet app must broadcast a sequence of transactions from their VTXO's transaction tree in the correct order. Each transaction in this sequence must confirm before the next can be broadcast. The process looks something like this: 1.…
Speaker Announcement 🔥 We’re excited to welcome @stevenroose3 to the stage at #BH2025! 🦡 🔥 Steven is a long-time Bitcoin developer, currently building Ark as CEO of Second, and formerly tech lead for Liquid at Blockstream. 🎟️ Grab your tickets now: baltichoneybadger.com
It's been 2 years that i am dreaming about Ark ! Great job @2ndbtc ❤️🍾
What a productive week! We just hit another milestone in testing new backends for Alby Hub! First successful SEND & RECEIVE using Ark on Signet, powered by @2ndbtc 🎉 Big things coming in next week’s release — stay tuned! ⚡️
Post-signet launch lesson: Our super generic encoders could serialize anything, so breaking changes crept between bark and server. So we replaced it with our own custom, version-aware encoder—every schema edit must stay backward-compatible or ship as vNext. No surprises.
If the wallet app you're building is already BDK-based, you're going to find it very, very simple to integrate Ark.
We were surprised at the amount of interest in DLCs at @BTCPrague. The good news is, DLC projects are super easy to build on Ark!
When you're building a payments protocol, reliability matters more than moving fast and breaking things.
We detached the on-chain wallet from the bark library (our Ark wallet client). We realized that this makes things a lot simpler for those building on wallets with existing on-chain functionality. Now bark handles the on-chain<->off-chain through internal APIs.
Been humbled by how far the @getAlby team has gone testing Ark and putting our software through its paces. Already got a lot of great feedback that's going into making our implementation even better.
What a productive week! We just hit another milestone in testing new backends for Alby Hub! First successful SEND & RECEIVE using Ark on Signet, powered by @2ndbtc 🎉 Big things coming in next week’s release — stay tuned! ⚡️
Let me know if we can help you out @2ndbtc
I'm just one data point of course, but since signing the letter I have dedicated a block of time every week to the furthering of the soft fork proposal, currently building a proof of concept Ark wallet using bark.
Sanket Kanjalkar (@sanket1729), Jonas Nick (@n1ckler), Tadge Dryja (@tdryja), Steven Roose (@stevenroose3), and Brandon Black (@reardencode) joined Optech this week to discuss: - A new onion message network - CTV+CSFS and benefits to PTLCs and BitVM - Vault descriptors - The CTV…