Native development is amazing these days… 1. Give codex a well defined goal 2. Enable MCP for simulator navigation and screenshots 3. Watch your app simulator hot-refresh while codex builds the new feature

🔈🤖 🧡

Join us for the monthly Cashu dev call today at 16:00 UTC (2h from now)! This is the best way to get into Cashu development and stay up to date with everything thats going on! Also there are demos 🥳 Meeting link: https://meet.fulmo.org/CashuCashuCashuCashuCashuCashuDevCall01?config=startWithVideoMuted=true&config=startWithAudioMuted=true

If you want to get together with brilliant minds and collaborate on freedom tech that will eventually change the future, you should check out @Sovereign Engineering. The application for the upcoming cohort is open, so what are you waiting for:

SEC-08 Application Form

Sovereign Engineering Cohort 08: YOLO++. Build the tools. Ship the future. Apply here. Kicking off on July 20, 2026.

I’m trying to structure my time a bit better, so I’ve decided to dedicate Thursdays to MVPs, greenfield ideas, and exploration projects. Today’s project: electrs-duress. It’s a tiny Bun proxy that sits between your wallet and its Electrum server. The proxy listens for scripthash requests and can send an alert via Telegram or webhook when a specific wallet balance is being checked. The idea is simple: configure the proxy with the xpub of your decoy wallet. If you ever find yourself in a $5 wrench attack situation, you unlock the decoy wallet. Your wallet software will naturally ask the connected Electrum server for balances, which triggers a silent alarm in electrs-duress and sends the notification of your choice. Github:

GitHub

GitHub - Egge21M/electrs-duress: A silent-alarm / duress proxy for electrum servers

A silent-alarm / duress proxy for electrum servers - Egge21M/electrs-duress

We’re back in business and getting together for our weekly Cashu TypeScript dev call today at 11:00 UTC (in about 70 minutes). Today’s call will be a review of the recent releases, as well as a quick planning and brainstorming session for the next versions of cashu-ts and coco. Meeting link: https://meet.fulmo.org/CashuTsDevs These meetings will not be recorded, and the Chatham House Rule applies.

37 weeks ago, I started working on Coco: a TypeScript framework and developer kit for building Cashu wallets and applications. The goal was simple: make Cashu app development in TypeScript as easy, modular, and reliable as possible. Coco provides a storage-agnostic core for wallet logic, proof management, mint sync, quote handling, subscriptions, operation recovery, and typed events, plus maintained adapters for Node, Bun, IndexedDB, and Expo/React Native. It also includes React hooks for building wallet UIs on top of the same core primitives. Today, after roughly 120,000 lines of code written in over 600 commits, and 55 alpha releases, I am very proud to announce that Coco v1 is now stable and available on npm under the @cashu scope. This release marks the first stable foundation for developers who want to build Cashu apps in TypeScript without rebuilding the same wallet infrastructure from scratch. But the work has just begun! Coco already takes care of the typical Cashu operations, but v2 is already being laid out. Custom units, more methods and other amazing improvements are going to land very soon (tm). Github:

GitHub

GitHub - cashubtc/coco

Contribute to cashubtc/coco development by creating an account on GitHub.

I am going to be back on @Nodesignal Podcast 🎙 - Deine Bitcoin-Frequenz today, speaking about one of the best experiences I had since I started to work in Bitcoin 🧡 This is going to be a blast 🥳

Guess when GPT5.5 was released...

Who would have thought that this is what multitasking would look like some day…

Watching Codex alternate between Android emulator screen captures and screen taps to build out and test a new feature is simply amazing

The new eNuts alpha is now available in ZapStore! Beware there be dragons 🐉

Zapstore

eNuts — Zapstore

Warning: This is an alpha-state release! Use at your own risk! eNuts is a mobile Cashu wallet for Bitcoin ecash. Add a mint you trust, receive or r...

Had GPT5.5 redesign the eNuts website. These models don’t stop getting better…

eNuts - Private Bitcoin Wallet

Private, simple Bitcoin payments with an intuitive UX.

Wait... So Codex just nerfs itself if it detects you work on security and are not full KYC'd with OpenAI? Real freedom tech is in so much trouble...

Anon, instead of scrolling nostr you could be reviewing FOSS PRs:

GitHub

Pull requests · cashubtc/coco

Contribute to cashubtc/coco development by creating an account on GitHub.

Just wasted an hour trying to correctly record Bitcoin income in my bookkeeping software… Without success Germany’s bureaucracy really knows how to turn simple things into a full-time job 🤦‍♂️ No wonder entrepreneurs are leaving

Batch minting is coming to the Cashu protocol, and I can not wait to supercharge npub.cash with it!

Batch Minting in Cashu: Solving Rate Limits and Proof Fragmentation

Batch minting is a proposed upgrade to the Cashu protocol that allows multiple paid mint quotes to be redeemed in a single request. By aggregating ...

It has been 4 days since I decided to let my personal AI assistant OpenClaw take control of my fitness. Here is how this is working out for me:

Coached by if-checks - OpenClaw Personal Training Day 4

I’m using OpenClaw as a persistent AI fitness coach. In day two, the big lesson was systems design: memory rules, calendar-aware accountability, ...

After a decade out of shape, I set a goal: lose 10 kg and cut my 5K time from 31:00 to 24:30. Instead of hiring a coach, I built one. Meet Coach Claw: my personal trainer built on OpenClaw. Will it work? I don't know, but i'll keep you posted.

Coached by if-checks - OpenClaw Personal Training Day 1

After a decade out of shape, I set a bold goal: lose 10 kg and cut my 5K time from 31:00 to 24:30 in just three months. Instead of hiring a traditi...

Beeeeep! 🤙 Bitcoin tap-to-pay is live. Numo turns your smartphone into a next-gen Bitcoin POS. Massive congrats to the whole team, this is HUGE 🙏🥳