Austin Bitdevs Underground is back for another exciting edition! If you're in Austin this Thursday, August 20, come on by the BTC++ house to talk about what's new in Bitcoin!

🗓️ Thursday, 20 August 2026
⏰ 6:00PM - 7:30PM Texas time!
📍 BTC++ House in Austin Sign up!

Here's the current list of topics:

Coldcard Vulnerability

- User reports their coldcard wallet being drained on reddit #1536238

Coldcard communication during and after
- Coldcard Mk3 Security Advisory #1536440
- Technical deep dive into the entropy issue #1536739
- To all Coinkite users and the entire Bitcoin community - NVK
- Adding to the Public Record on Our Ongoing Investigation - Coldcard #1540370
- Coldcard issues "extremely important correction" #1542079

- Coldcard Mk2, Mk3, Mk4, and Q Firmware Security Vulnerability - block #1536720
- Tracing the Attacker's Steps Through 1,082 BTC Coldcard Drain - Praveen Perera #1547780
- Coldcard Entropy Bug: An Investigative History - SimpleStacker
- Coldcard: the technical autopsy of an entropy failure - Kevin Loaec, Wizardsardine #1546011
- When random.bytes runs but doesn't work - tuma, btcpp
- Alex Thorn, Galaxy Digital Research Part 2 Part 3
- mapping the ongoing Coldcard attack with a live dashboard - James O'Beirne
- Coldcard key exposure - orangesurf
- Coldcard and the limits of "don't trust, verify" #1539812
- There is not 1 single compelling evidence that this was a backdoor - Raw_Avocado
- Coldcard users allegedly reporting drains since 2022
- River: Coldcard Exploit Takeaways
- MARA Slipstream "rescues" 9K bitcoin from Coldcard multisigs
- Coinkite suspends customer data blanking

Other Weird Exploits

- Trezor data breach #1547052

BIP 110 Chain Split

- OCEAN Accused of hashrate hijacking over BIP110 #1544724
- Inside OCEAN Mining during the BIP110 chain split - Bob Burnett interview #1548179
- BIP110 debate about new PoW algorithm
- Luke Dashjr announces sabbatical from OCEAN Mining #1545050
- Luke Dashjr removed from BIP maintainer role #1545021
- Lopp post-mortem #1550073
- Mechanic: It's been 15 years, I'm out
- Some advice re Luke-less Knots - Siggy

BIPs

- BIP54: Great Consensus Cleanup - PR to implement without mainnet activation
- BIP95: Testnet 5 #1509169
- BIP352: Silent Payments functions merged into libsek256k1
- BIP452: P2P UTXO Set Sharing
- BIP453: Terminology of Transaction Components
- BIP455-457: SwiftSync Specification
- BIP458: Half-Aggregation of BIP 340 Signatures
- BIP459: DahLIAS fully aggregated signatures for secp256k1
- BIP460: CISA for Taproot Key Path Spends #1546524
- BIP461: Deterministic ECDSA Signatures
- BIP Draft: CHillDKG - Distributed Key Generation for FROST #1544639

Releases

- Payjoin Dev Kit 1.0 #1546544
- Ledger Bitcoin v2.5.0 human readable miniscript policies #1545505
- Proof of Work Signet Faucet - ajtowns #1544596
- Breez releases Glow - The Bitcoin App for Everyone #1541507
- Minerva Mint - Ark-backed Cashu ecash
- Clams v1 - local first accounting for Bitcoin

Research

- Bitcoin post-quantum R&D tldr #1549750
- Dropkick - a minimal commit-reveal rescue protocol - Conduition #1538135
- BIP322 verifier accepts proofs signed by unrelated keys for P2WPKH, P2SH-P2WPKH #1548064
- Call to test Bitcoin Core static binaries - Schmidty #1548607
- The DIY Signing Device Revolution is Just Beginning #1546642
- How to destroy bitcoin (and what happened to the 107 coins burned in May - bennet #1546301
- Anzen: Bitcoin self-custody trilemma - Luke Childs #1542747
- Omega Splice - Dusty Daemon #1533196

Tools

- Bitcoin, Ark, and Nostr decoder #1549709

News

- Bitcoin Red Team #1539905 #1541457
- OpenSats announces priority support for Red Team
- Amboss announces affiliate program #1550187
- odudex steps down as krux maintainer #1540488, JonDoe_le_frog becomes new maintainer #1549765
- nix-bitcoin 0.0.139 is final version #1547023
- RY3T Nova: First product built on Mujina - 256 Foundation #1549902
- Floresta roadmap Q2, Q3 2026
- Wiz seeks support to register top level domain .bitcoin
- NVK steps down from OpenSats board #1538698
- Bitcoin Security Consortium Announced #1530818