In partnership with
Greetings Bitcoiner,
Welcome to Issue #670 of Bitcoin Breakdown, where it’s OPSEC Wednesday special, followed by the latest Quick Bits snippets. But first, today’s Top Stories:
Privacy, custody and consensus collide today. A mixer precedent stretches conspiracy risk toward open-source developers, Strike turns idle dollars into Bitcoin rewards through a bank, and F2Pool co-founder Chun Wang ties BIP 448 signaling to wider consensus. Each story asks who controls the money, the code and the rules.
Built for the unstoppable.
The Dell Pro powered by Intel® Core™ Ultra with Intel vPro® adjusts power usage based on how you work, so your battery life never slows you down.
🔐 Mixer Ruling Widens Conspiracy Exposure Risk
The Rage reports that the Sterlingov ruling treats every mixer deposit as furthering a criminal conspiracy because it enlarges the pool that obscures identities. The SDNY used that precedent in Roman Storm's case even though he wrote open-source, non-custodial Tornado Cash code.
Why it matters: Bitcoin privacy loses when surveillance incentives turn users and open-source developers into conspiracy targets. Sovereignty wins only when law distinguishes custody from code and ordinary use. Read more→
💰 Strike Turns Idle Cash Into Bitcoin Rewards
Strike lets eligible cash balances earn bitcoin with no minimum and no monthly fee. Cross River Bank holds the dollars and pays the interest, while eligible cash has Federal Deposit Insurance Corporation protection up to $250,000.
Why it matters: The product redirects a fiat incentive toward Bitcoin accumulation, but bank custody preserves counterparty risk. Savers win more sats only after moving rewards to self-custody and controlling their keys. Read more→
⛏️ F2Pool's Chun Wang Backs BIP 448, Waits on Consensus
F2Pool co-founder Chun Wang says BIP 448 is "good to go" for him. He adds, "we'd like to signal for it once wider consensus is achieved," so no signaling has begun. The proposal is still a draft for Taproot-native rebindable transactions, with activation left for later.
Why it matters: A possible signal from even a large mining pool is only an initial step toward broader consensus. Bitcoin stays hard money because node operators and users can reject rules they cannot verify. BIP 448 has to win on merit, not on a miner's timeline. Read more→
An attacker sat inside Swiss broker Pocket Bitcoin's support system for about a week, until 16 August. For 291 customers, the stolen files held ID copies, postal addresses and, for some, the bitcoin address they bought into. Trezor's shipping partner leaked 11,742 shipping addresses the same month.
Changing your password does nothing here. The address is on a public ledger forever, and every coin that ever touched it now points at your front door.
So which of your other coins are already tied to that address? Which common habit spreads the damage to coins the leak never touched? And how do you spend a tagged coin without handing out your IP address too?
This week's OPSEC Feature Article shows you how to contain a leaked purchase address before it exposes the rest of your stack.
Get instant access to this special feature by becoming a premium supporter here.
BlackRock says in its 'Machine-Native Economy' report that AI agents may drive Bitcoin and crypto demand, favoring stablecoins for payments and bitcoin for long-term value storage.
Amir Taaki, a British-Iranian cypherpunk who wrote the first CoinJoin and stealth address implementations, says Singapore police questioned him for six hours before deporting him.
Robinhood, the US retail trading platform, adds $25M of bitcoin to its balance sheet to signal commitment to the industry.
Metaplanet, a Tokyo-listed company holding about 44,000 BTC, revises its capital policy to put 10% to 15% of assets in income investments and M&A, keeping bitcoin at 85% to 90%.
CoinShares, an investment firm, surveys 2,230 affluent investors across seven countries and finds most own Bitcoin and crypto, averaging 10% of portfolios, while many say their financial advisers are overly cautious.
Partners Banka, a Czech commercial bank, teams with MiCA-licensed exchange Anycoin to let clients buy bitcoin in its main app from 500 korunas, with a 2% markup and no custody fee.
Bitcoin Group SE, operator of German exchange bitcoin(dot)de with 1.1M users, plans to resume trading through regulated partners after BaFin rejects its bank unit's MiCA license, with trading largely halted since June.
Binance, the largest exchange, records its biggest weekly bitcoin outflow since June 2023 at 23,137 BTC in the fourth week of September, according to analytics platform CryptoQuant.
Coinbase, a major US exchange operator, plans to relaunch its Pro trading platform by year-end after completing its Deribit acquisition integration, creating Coinbase Global Exchange for unified derivatives liquidity.
OKX, a global exchange, raises new funding at a $25B valuation from Circle, Ripple and Standard Chartered's SC Ventures.
US government wallets move about 833.599 BTC worth $71.6M to Coinbase Prime deposit addresses, but no sale is confirmed.
Hong Kong's government, led by Financial Services Secretary Christopher Hui, reaffirms plans to submit a bill by year-end 2026 creating licensing regimes for Bitcoin and crypto trading, custody, advisory and management services.
Bank of Russia, the country's central bank, registers its first four exchange operators and five custodians, including Sberbank, the largest bank, which plans to launch Bitcoin products Dec. 1.
Stablecoin transfers in China surge as unique wallets sending peer-to-peer payments grow 43-fold since early 2024, reaching $104.1B in volume despite strict trading restrictions, according to analytics firm Chainalysis.
Bitcoin and crypto card payment volume hits a record $12.5B, up 140% year-to-date and 247% from October 2025, per paymentscan(dot)xyz, as stablecoin adoption and cheaper cross-border payments drive demand.
Conduit Technology, a cross-border payments firm, sues stablecoin issuer Tether in a New York federal court, alleging that they froze its $2.76M operating wallet for over a year without a court order.
Thank you for reading!
