App auth went down this week. The Bitcoin in our Vaults didn't notice. Two layers. The Bitcoin layer holds your collateral by script. The app layer is where we work. The first doesn't depend on us. The second is what we fix. This week's tech tuesday: the repayment leaf. How cooperative spends actually run, why the dcn isn't a custodian, and why your one key signs both the BTC and the USDC. 👇

🚨 App authentication is temporarily down. Your Bitcoin is not. 🚨 We've run into an issue with our app authentication service, the layer that handles email OTP verification and keeps you signed in. We're fixing it now and adding a fallback to make it more resilient. 👉 No funds or protocol functions are affected; this is a front-end issue only. 🟡 What this means: existing users may get signed out, and new sign-ups are paused until this is resolved. The protocol itself is untouched, your BTC is in its Taproot vault exactly where it was, unilateral exit path unchanged. 🟧 Verify it yourself: the earn dashboard at earn.surge.credit is live and running, independent of the app. App fixes have to go through app store review, which is why this takes a little longer to resolve on the front end. 🟢 Your options, no rush: 1️⃣ Use a TestFlight (iOS) / open testing (Android) build, links coming soon 2️⃣ Or wait for the production fix, currently in the normal app store review queue (can take a few days) We'll post here the moment the production update is live. ⚠️One thing to watch: no need to panic. Refer only to our in-app messages and official social handles. Stay away from any scams. Don't trust. Verify 🟧

Partial Withdrawals are live on Surge 🎉 Until now, pulling Bitcoin collateral meant fully repaying your credit line first, even if your taproot vault held far more than your debt required. that's done. When your credit line is below 50%, you can now withdraw excess collateral straight to your self-custodial wallet. The vault stays intact: every tapscript spending path and your unilateral exit, untouched. draw, repay, and now withdraw, on your terms. Full flexibility for Bitcoiners, as far as it gets. Full walkthrough 👇 https://youtu.be/qA_1x0OVSVc

Some of the best surge coverage yet, from the PBJ podcast, Steve lee, DK, and Max, Bay area bitcoiners. They unwound the inner workings, not just the surface: 1️⃣ Bitcoin-native : btc stays on bitcoin. no wrapping, no bridging, no leaving the chain. 2️⃣ A revolving credit line, not a loan and no kyc. borrow against your BTC without handing over your identity. 3️⃣ Taproot used the way it was designed, not chain spam. the NUMS key (SHA256("SURGE-NUMS")) closes the backdoor taproot otherwise leaves open, provably unspendable internal key, so the only paths are the tapscript ones. 4️⃣ Unilateral exit, the CSV timelock matches the credit line's term, so you can always sweep your own UTXO back without anyone's cooperation. 5️⃣ No riding morpho or existing defi markets. Surge bootstraps its own liquidity. one of its kind, and bitcoin-native to the core. and they pressed where it matters, DCN trust assumptions, oracles. The open questions. exactly the ones to ask. Surge starts ~9 min in 👉 https://www.youtube.com/watch?v=we7gHhi9xiY