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Greetings Bitcoiner,
Welcome to Issue #620 of the Bitcoin Breakdown daily newsletter, where we’re rounding up the most talked-about developments in the Bitcoin-only space from the past weekend with our Quick Bits and Quick Media sections. But first, today’s Top Stories:
Bitcoin’s main chain is outrunning a stalled enforcing branch, BTCPay operators are closing an exploited LND credential leak, and Anzen is testing vault style custody with scripts already available today. Across all three, the useful signal comes from mining, verification, and custody mechanisms rather than louder governance claims.
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🧱 BIP-110 Branch Stalls While Bitcoin Moves On
The BIP-110 enforcing branch mined two blocks at full Bitcoin difficulty, then stopped at height 961,633. By 12:25 UTC on August 10, Bitcoin’s main chain had reached 961,875, leaving the minority branch 242 blocks behind. Developers have prepared separate proof of work fallback code, but it has not been activated.
Why it matters: Bitcoin node rules can reject blocks, but they cannot summon miners or economic consensus. The stalled branch shows why measurable chain work matters more than declarations of victory. Read more→
The next story turns stalled code into stolen access...
🚨 BTCPay Patch Closes a Lightning Macaroon Leak
BTCPay Server says attackers exploited a Lightning Network Daemon macaroon exposure before version 2.4.2 landed. A standard upgrade now moves the node to version 0.21.1 and regenerates macaroons automatically, while operators using custom reverse proxies, Tor routes, or forwarded ports must close exposed paths and rotate credentials themselves.
Why it matters: The Bitcoin Red Team’s early disclosure gave operators a head start measured in hours, not weeks. Security work matters most when remediation distinguishes standard installations from custom exposure instead of issuing one blanket instruction. Read more→
From emergency patching, custody moves back into scripts...
🔐 Anzen Builds a Vault With Bitcoin’s Own Rules
Anzen by Luke Childs, Cofounder & CTO Umbrel, combines a phone and hardware wallet with timelocks and presigned transactions to create vault style custody under Bitcoin’s existing rules. Childs says the mainnet prototype needs hardware integration, peer review, and a usable app before it is ready for production.
Why it matters: Bitcoin’s scripting tools can improve custody without waiting for another governance battle. Standard protective patterns could move faster than a soft fork, provided developers test them rigorously before ordinary users trust them with funds. Read more→
Murch, a Bitcoin Improvement Proposal editor, recommends removing longtime developer Luke Dashjr from the editor group following the controversial chain split caused by Dashjr's failed proposal.
Russian retail giants M(dot)Video and Wildberries report that hardware wallet sales have more than doubled in early 2026 as Russian investors prepare for strict new Bitcoin and crypto regulations starting September 1.
Bitcoin user loses life savings to a fraudulent Google search advertisement redirecting to a phishing site mimicking hardware wallet maker Trezor.
OCEAN mining pool reverts its default connection to the non-BIP110 chain, letting miners choose their path after a recent Bitcoin Improvement Proposal 110 split.
Rob Hamilton, one of the developers spearheading the Bitcoin Red Team effort, says American AI startup OpenAI is blocking his cybersecurity research, forcing them to use Chinese open source models to protect Bitcoin infrastructure.
Coinkite suspends automated data deletion to comply with legal preservation requirements after the security incident, while letting users opt out.
Glassnode, an on-chain analytics firm, reports that 210,000 BTC have moved from long-term holder wallets following the exploit on Coinkite's Coldcard hardware wallets.
Galaxy Research reports that victims of the $111M Coinkite Coldcard wallet hack suffered a median loss of over 1 BTC from dormant wallets.
US spot bitcoin ETFs record $1B in weekly inflows, their strongest showing since April and third-best week since last October.
Russia's Federal Security Service (FSB), the country's main security agency, arrests over 20 people in Moscow for operating unlicensed bitcoin exchanges that were allegedly funnelling stolen scam funds to Ukraine.
Brazil’s central bank is set to require platforms to hold bitcoin transfers exceeding $10,000 to foreign wallets for 24 hours to prevent fraud, effective Jan 1st, 2027.
US Treasury Department sanctions Iranian exchanges Shelbit and Aban Tether for facilitating over $3M in transactions to evade international sanctions.
Clarity Act delayed until September due to unresolved political and ethics disputes.
Matthew Kratter, a BIP-110 proponent, argues that the fork fight is not over as rising transaction fees tempt major mining pools to defect, exposing the legacy Bitcoin network to extreme wipeout risks (Aug 9 | 3:18 min watch).
Samson Mow of JAN3, in an interview with Rustin of Simply Bitcoin, explains why the controversial BIP-110 soft fork proposal is a 'nothing burger' that will not successfully split the Bitcoin network or compromise its decentralized, permissionless nature (Aug 9 | 21:55 min watch).
Jameson Lopp & Nick Neuman of Casa, in an appearance on Bitcoin News' channel, warn that verifying wallet entropy is vital for securing BTC but caution that advanced features like passphrases often become 'foot guns' for users (Aug 8 | 10:45 min watch).
Rob Hamilton & James O'Beirne, members of 'Bitcoin Red Team', join Zack Cohen and Ken Egan of Bitcoin Policy Institute to discuss how unconstrained open-source AI is rewriting cybersecurity and why US open-weight model regulation is counterproductive (Aug 7 | 30:46 min watch).
BTC Sessions podcast panel discusses a critical, actively exploited vulnerability in BTCPay Server, urging node operators to update or shut down systems to secure their bitcoin (Aug 10 | 29:47 min watch).
Fred King, Founder of CryptoSnake, speaking at BTC Prague 2026, evaluates the quantum computing threat to 6.9M exposed BTC and details how the Bitcoin network can successfully transition to post-quantum security through proposals like BIP-360 (Aug 8 | 18:41 min watch).
