Bitcoin
Every Bitcoin read CryptoBloggers has picked: 365 so far, 315 in the last 30 days, strongest first under “Start here” and newest first below.
Start here
- 1
Inside the largest crypto hack on record: How attackers breached Binance for $6.3 billion
Investigators tie the $6B Binance hack to North Korea and detail how hot-wallet signing infrastructure was compromised and where funds went.
- 2
Bitcoin’s 21 Million Limit Doesn’t Enforce Itself. A Bitcoin model matched Core across 100,000 test executions. The gap that remains reveals what it really takes to protect Bitcoin’s most important promise.
A Bitcoin model matched Bitcoin Core across 100,000 test executions and examines what still must be done to enforce the 21 million cap through independent node validation.
- 3
In 2014 a Bitcoin educator sent 30 cents to the brain wallet "Satoshi Nakamoto" on video, it was spent in the same block, a day before the video was published.
Onchain check of a 2014 brain-wallet stunt shows the 30 cents went to the wallet and was spent within the same block, before the video was published.
- 4
Bitcoin Core reveals bug that made thousands of nodes trust any stranger on Tor
Bitcoin Core disclosed a fixed October 2025 bug that let thousands of Tor-connected nodes trust any peer, plus a separate bug that could halt block production until a restart.
- 5
How fake randomness stole $130m in Bitcoin
A clear layman explainer of how weak randomness in the Coldcard seed generation enabled a roughly $130m Bitcoin theft, with lessons for self-custody.
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Bitcoin picks in the 6:30 email
The day’s five best crypto reads, plus AI agents doing real things on-chain. Free, every morning at 6:30 a.m. Central.
Every Bitcoin card
newest first · page 1 of 13- 1
Adam Back makes case for simpler security as Blockstream launches Bitcoin custody system
Blockstream launches a custody system built with Thales using dedicated hardware for transaction signing, with Adam Back arguing for simpler offline security.
- 2
Dormant Bitcoin Wallets Wake Up After 16 Years, Moving $6.9 Million
Two 2010 Bitcoin mining rewards moved after 16 years, carrying about $6.9M; on-chain movement with no clear cause.
- 3
Metaplanet swings to $170M loss as Bitcoin sale hits earnings
Metaplanet posted a $170M loss as Bitcoin sales and valuation losses hit its earnings despite higher revenue.
- 4
Twenty One Capital CEO Says $1.09 Billion Quarterly Profit Came From Bitcoin, Not Business
Twenty One Capital's Q3 $1.09B profit was a fair-value gain on its 43,514 BTC, while its 10-Q shows a nine-month loss and no binding Elektron deal.
- 5
Tether-backed Twenty One Capital reports $1.09 billion Q3 net income on bitcoin gains
Tether-backed Twenty One Capital reported $1.09B Q3 net income, almost entirely from bitcoin price gains against a small operating loss.
- 6
Difficulty is set to drop about 8% tonight. That would be the biggest cut since June. Blocks have averaged 10.9 minutes this window as hash rate falls.
Bitcoin difficulty is set to drop about 8%, the largest cut since June, as hash rate falls and blocks slow.
- 7
Nakamoto Options Loss Turns Q3 Operating Revenue Negative
Nakamoto's Q3 operating revenue turned negative from an options loss, while Bitcoin gains drove $85.5M net profit; part of the options program hedges Kraken loan collateral.
- 8
Jane Street boosts Fidelity Bitcoin ETF holdings nearly 8x, trims IBIT
Jane Street ended Q3 with a larger Fidelity bitcoin ETF stake and 19% fewer BlackRock IBIT shares, worth $957 million.
- 9
Bitcoin firm Nakamoto owes Kraken $165 million, more than its entire market value
Nakamoto owes Kraken $165 million, more than its market value, with about 70% of its bitcoin pledged as collateral, a concentrated treasury-firm risk.
- 10
Bitcoin ETFs are now down over $1.5 billion in net outflows for the year
Bitcoin ETFs have seen over $1.5 billion in net outflows this year as spot price fell below $70,000, the lowest since August.
- 11
Why the Path to Quantum Resistance Runs Uphill for Bitcoin Wallet Makers
Trezor's CTO explains the trade-offs of Bitcoin's leading post-quantum signature scheme for hardware wallet makers.
- 12
In 2014 a Bitcoin educator sent 30 cents to the brain wallet "Satoshi Nakamoto" on video, it was spent in the same block, a day before the video was published.
Onchain check of a 2014 brain-wallet stunt shows the 30 cents went to the wallet and was spent within the same block, before the video was published.
- 13
BlackRock’s IBIT Bleeds $2 Billion in Nine Straight Days of Outflows
US spot bitcoin ETFs logged nine straight days of outflows, with IBIT taking most of November's withdrawals.
- 14
Strategy to Leave MSCI Indexes By Month End, Metaplanet Also Out
Strategy and Metaplanet drop out of MSCI indexes at the Nov. 30 close; Strategy is the only one of 24 USA deletions not moving to small cap.
- 15
Canaan may sell more bitcoin for stock buybacks as mining-rig revenue falls 96%
Canaan is selling bitcoin to fund buybacks as mining-rig revenue falls 96%, a sign of miner stress.
- 16
MSCI is dropping Strategy from its index, and the exclusion could hit its bitcoin-buying machine
MSCI's exclusion of Strategy from its equity indices could limit the company's ability to keep buying bitcoin, according to analysts.
- 17
Bitcoin Core reveals bug that made thousands of nodes trust any stranger on Tor
Bitcoin Core disclosed a fixed October 2025 bug that let thousands of Tor-connected nodes trust any peer, plus a separate bug that could halt block production until a restart.
- 18
MSCI Removes Strategy (MSTR) From Its USA Index, Forcing Index Funds to Sell by Nov. 30
MSCI will drop Strategy, Metaplanet and others from its global indexes at the Nov. 30 close, forcing index funds to sell.
- 19
How Sam Altman-Backed Meanwhile Is Disrupting the $20T Life Insurance Industry
Meanwhile's Danny Baer explains a Bermuda-based life insurer that holds regulatory capital in Bitcoin and pays out policies in it.
- 20
Bitcoin Short-Term Holders Send $3.6 Billion in BTC to Exchanges at a Loss
Short-term Bitcoin holders have moved $3.6 billion to exchanges at a loss, with Binance seeing sharp inflows from recently moved coins.
- 21
Bitcoin Core Discloses 3 Patched Bugs, Including a High-Severity Mining Flaw
Bitcoin Core disclosed three bugs fixed in October 2025, including a high-severity mining flaw, now public under its disclosure policy with no known exploitation.
- 22
Bitcoin Faces First Back-to-Back Annual Losses in History, But There's a Catch
Bitcoin is on track for its first back-to-back annual losses, breaking an 18-year pattern; the data has nuance.
- 23
MSCI Rules Today on Cutting Strategy (MSTR) From Its Indexes After a Draft List Marks It Deleted
MSCI's November review applies a new non-operating company screen, and its draft list already marks Strategy and Metaplanet as deleted; the decision lands today at 5 p.m. ET.
- 24
A High-Severity Bug Could Have Stalled Bitcoin Mining—Bitcoin Core Has a Fix
Three Bitcoin Core bugs, one able to halt a miner's block building, have been patched; no coin theft involved.
- 25
Bitcoin Core Discloses Bugs That Could Freeze Mining Nodes
Bitcoin Core disclosed bugs that could freeze mining nodes; fixes shipped in October 2025 and details were held until the vulnerable 29.x line reached end of life on Oct. 27.
- 26
Stacks Tests Post-Quantum Signatures With sBTC Transfer
Stacks tested a post-quantum Lamport signature on a mainnet sBTC vault withdrawal; ordinary sBTC wallets are not upgraded.
- 27
Deutsche Bank Switches On Bitcoin Custody for Paying Clients
Deutsche Bank now holds bitcoin, ether and three stablecoins for European institutional clients, though it has not named customers or disclosed fees.
- 28
Bitcoin has been declared dead 482 times since 2010. A creator turned every one of them into a gravestone
A creator catalogued 482 Bitcoin obituaries since 2010 with headlines, dates and prices, a light but useful historical record.
- 29
Running on Empty
Glassnode's onchain read finds Bitcoin below the STH cost basis, with stablecoin, ETF and US capital outflows and two large wallet cohorts buying.
- 30
Bitcoin Covenants Part 5: MATT and OP_CHECKCONTRACTVERIFY — How Bitcoin could carry state across transactions
Explains how OP_CHECKCONTRACTVERIFY could let Bitcoin carry contract state and enable compact fraud proofs via Taproot outputs.