Harbor is a new ecash wallet for desktop, designed for privacy from the ground up.
🤖 Rust backend & frontend
🧅 Tor by default
🪙 Supports multiple mints (Fedimint + Cashu)
Devs @Paul and @benthecarman give @BLUESKY the lowdown in BR097.
Bitcoin.Review
_@bitcoin.review
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A Podcast and Newsletter review of Bitcoin Software updates and related topics with NVK and guests.
Dev testing? Choose your chain:
Testnet = chaotic & adversarial
Signet = predictable & controlled
@Rob Hamilton walks through mining behavior, forks, and block timing.
[BR096]
Bitcoiners - it’s time to return to #nostr
@BLUESKY and Odell dissect why many Bitcoiners bailed on nostr after a disappointing first touch, and how UX improvements can win back users. [BR096]
Nostr MLS is here!
A HUGE step forward. 💪
But before you start using #nostr for sensitive Bitcoin actions, take warning from @craigraw - encrypted or not, nostr messages live forever on servers you don’t control.
(Oh, and not to mention future post-quantum threats!)
[BR096]
What happens if a soft fork (such as CTV) were activated by 50% of the hash rate, but rejected by the rest?
@Rob Hamilton explains how this would play out, ultimately resulting in a chain split. [BR096]
The OP_RETURN debate may be distracting from a far more existential threat to #Bitcoin.
The Samourai Wallet case could set precedent on whether node operation is legal in the US. ⚖️
@craigraw urges us to focus on the real fight in BR095.
Ephemeral anchors recently dropped in Bitcoin Core v29! 🚀
No more fee baking in pre-signed txs.
You can now "delegate" fee payment post-signature.
Better for Lightning, covenants and more.
@BLUESKY , @Rijndael & @Rob Hamilton unpack it in BR095.
🔐 COLDCARD just got a HUGE upgrade!
COLDCARD Co-sign lets you do 2-of-3 multisig with yourself - while enforcing spending limits, whitelisted outputs, and time-based constraints, all locked behind a policy key.
@BLUESKY , @Rijndael , and @Rob Hamilton break it down in BR095.
Want to share a seed or SSH key securely across borders?
Meet Key Teleport: a new protocol by @Coinkite to transfer secrets without trusting phones, computers, or comms.
All via QR, NFC, and BBQr.
@BLUESKY & @Rob Hamilton discuss the new protocol and its applications in BR094.
From building Lightning interfaces to coding backend agents, LLMs are evolving fast.
The challenge is no longer compute—it’s control.
@BLUESKY , @Rob Hamilton & @Paul unpack vibe coding, prompting limits, and where AI tools are ready in BR094.
Mining decentralization is gaining momentum. 🧱
With Stratum .work showing live template timing and Stratum V2 adoption on the rise, a shift toward hasher-led block building could arrive within the next few years.
@BLUESKY shares his take in BR094.
@mempool now flags address poisoning attempts.
These attacks spoof wallet addresses to fool users into sending to the wrong address.
@Rob Hamilton outlines the importance of Mempool space’s update in BR094.
🚨 Trezor Safe 3 vulnerability
Ledger Donjon demonstrated they could bypass firmware checks and run malicious code — enabling remote recovery of user funds.
Why? Critical ops still run on the MCU, not the Secure Element.
@BLUESKY & @Rob Hamilton break it down in BR094.
Change verification is a must for wallet security.
If you send 1 BTC from a 100 BTC UTXO, that 99 BTC needs to come back to you. Many wallets ignore this.
@Rob Hamilton & @BLUESKY highlight this critical security oversight in BR093.
🛡️COLDCARD v5.4.1:
✍️ Message signing from secure notes
🛡️ Delta Mode: Hide/wipe seed vault, notes & p'words
👓 Enhanced address display
🔐 Verify BBQr Signed RFC messages
+ more!
@BLUESKY gives a rundown of the latest COLDCARD updates in BR093.
BDK abstracts wallet dev complexity, making it accessible for all.
@BLUESKY : "It'll be the default in a few years."
@Rob Hamilton : "Even a left curve like me can build safely."
With v1.1.0, the future of wallet development is more promising than ever. 🦾
Bitcoin Safe v1.1.0 is here:
✅ Jade wallet support
✅ Deb build
✅ Xpub import
@BLUESKY and @Rob Hamilton discuss the project's progress, whilst also highlighting privacy concerns over using #nostr for multisig coordination. [BR093]
Is ESP32 really safe for securing #Bitcoin?
Undocumented commands in ESP32 Bluetooth chip have recently raised security concerns, adding to existing risks. 🚨
@BLUESKY , @Rob Hamilton , and @Seardsalmon sound the alarm in BR093.