
My heart goes out to everyone who lost bitcoin in the Coldcard hack. That is a real gut punch, and no one should have to go through it.
Seeing a lot of people freaking out and questioning the whole idea of self-custody because of it.
One company made a serious mistake on the one job a hardware wallet has: generating solid entropy for the seed. That hurts so many real people. At the same time, it does not mean self-custody is broken, even though it might feel like it today.
Self-custody is and will always be the point. You hold the keys. No third party that can freeze, lose, or seize your bitcoin. That is what makes this different from the old system.
Also, for many people, a simple single-sig setup does the job well. One seed, written down properly and stored safely. Clear and manageable. Countless people also lose bitcoin through their own mistakes rather than sophisticated attacks. Lost seeds, forgotten passphrases, botched setups. Adding layers of complexity also gives more places to mess up.
If your stack grows or your threat model changes, it off course makes sense to step up. Multi-sig, a strong passphrase, extra entropy measures. Match the complexity to the amount and the risk. That is a smart upgrade path, not a rejection of the simpler tools that work better for a large number of people.
Be careful not to overcorrect. Do not throw away practical self-custody for setups that are hard to maintain, or even worse, hand the keys to someone else who has already proven they can lose them too.
Hold your own keys. Keep the setup as simple as your risk allows. Verify everything.
Danny retweeted
Trezor & Ambire: Clear Signing xitter.cf/i/broadcasts/1yGBePgzl…
Danny retweeted
One year ago today, we launched the Trezor Safe 7 at our first-ever live launch event in Prague.
Since then, it’s won the Best Hardware Wallet 2026 award and the Red Dot Award for Product Design.
Happy 1st birthday, Safe 7.
Danny retweeted
Throwback Thursday:
In the early days of Trezor's development, I hit a wall. I couldn't get the display to initialize, and the screen refused to show anything. After weeks of frustrating debugging, I was ready to abandon the project because a hardware wallet without a screen makes absolutely no sense.
The last thing we need is competitors dunking on @ledger to score cheap marketing points.
If retirement attacks are possible, this threatens all of self-custody.
Today it's your competitor. Tomorrow it could be you.
Danny retweeted
Saying that your hardware wallet is better because it doesn't have a screen, so you can not tamper with it is like saying that not having hot water doesn't affect you because you don't have water to begin with.
A hardware wallet without screen is pointless, because you can NOT verify what you are signing with it, you are trusting the device connected to the internet.
Danny retweeted
The last thing we need is competitors dunking on @ledger to score cheap marketing points.
If retirement attacks are possible, this threatens all of self-custody.
Today it's your competitor. Tomorrow it could be you.
Come on Tangem. I get you didn’t like the Donjon laser attack on your chip, but this self-promotion and grave-dancing over the @Ledger implant incident isn’t what the industry needs right now.
You just have different attack vectors. Be better.
For media and creators: we’re happy to walk you through the technical details of this incident and explain why the seedless approach is the way and why a simpler wallet means fewer places to hide. Reach us at [email protected]
Danny retweeted
Level 10 on Jumper Pass now gets you a free @Trezor Model T. Europe only, excl. UK.
Level 6+ gets 40% off Trezor Keep Metal, wherever you are.
Claim at jumper.xyz/perks
Danny retweeted
Trezor protects your coins.
You protect your Trezor. (Don’t put it in your plushie and walk around 😁)
Taking my new Little Trezor Hodler around TOKEN2049 with me today.
Stay secure and stay safe. @Trezor
🤝 Paid partnership
We’re proud to sponsor the HSC Asset Management Conference in Singapore on October 8.
A great lineup of speakers and a full day of conversations around asset management.
If you’re in Singapore, join us.
@mpost_io
Agenda →
luma.com/HSC_Singapore
Danny retweeted
I talked to @JoeNakamoto of @BTCPrague about the Coldcard incident and security at @Trezor. The thumbnail is somewhat dramatic, but our conversation is actually quite chill :D youtube.com/watch?v=qUlgTadw…
Supporting education is an important part of our mission because students are the innovators and leaders of tomorrow.
This year, we hosted educational sessions at universities across Europe, introducing students to hardware wallets, crypto security, and the importance of taking control of their digital assets.
By helping the next generation understand how to use and protect crypto safely, we’re building a more informed and secure future for the entire ecosystem.
Danny retweeted
Naomi Whitehead has lived through 116 years of monetary history. She was 3 when the Fed was created and 115 when the Czech National Bank became the first central bank in the world to buy Bitcoin.
Here’s what happened in between:
1913 (age 3): creation of central banking.
The Federal Reserve Act created the Fed and authorized Federal Reserve Notes, initially subject to a 40% gold-reserve requirement. The stated goal was an “elastic” currency and a lender of last resort. It was the institutional start of managed money.
1933 (age 22): Executive Order 6102.
During the Depression banking crisis, Roosevelt required most private gold coin, bullion, and gold certificates to be surrendered at the existing official rate. Domestic gold convertibility was ended. Americans could no longer redeem dollars for gold.
1934 (age 23): end of the domestic gold standard.
The Gold Reserve Act moved monetary gold to the Treasury and reset the official price to $35 an ounce, a devaluation of roughly 41%. Private monetary gold ownership stayed broadly restricted for the next four decades. The classical monetary restraint was broken for Americans.
1944 (age 33): Bretton Woods.
The dollar became the center of the postwar system: foreign currencies were pegged to the dollar, and the dollar was convertible to gold at $35 only for official foreign holders. A gold-exchange standard, not the old full gold standard. It allowed the U.S. to issue dollar liabilities far beyond its gold holdings.
1971 (age 60): the dollar becomes fiat.
The Nixon Shock closed the gold window. Foreign official holders could no longer redeem dollars for gold. By 1973 major currencies were floating. The dollar was no longer redeemable for a fixed quantity of gold.
2008 (age 98): the financial crisis.
Housing leverage, bank balance sheets, and easy credit collapsed. The Fed cut rates to zero, began quantitative easing, and massively expanded its balance sheet to stabilize the system. Fiat expansion became the main crisis tool.
October 2008 / January 2009: creation of Bitcoin.
Satoshi Nakamoto’s white paper described a peer-to-peer electronic cash system with a hard cap of 21 million coins and no central issuer. The genesis block was mined in January 2009, with a message about bank bailouts embedded in it. A direct counter-offer to a system that had just required emergency intervention.
2012, 2016, 2020, 2024: the Bitcoin halvings.
The new-supply rate was cut in half on a fixed schedule, from 50 BTC per block to 3.125 today. No committee or emergency exceptions. The monetary policy works whether Bitcoin was $10 or $60,000.
March 2020 (age 109): COVID money printing.
Rates went back to zero and the Fed launched massive QE. Its balance sheet surged from around $4.2 trillion at the start of 2020 to nearly $9 trillion by early 2022. Bitcoin’s issuance schedule did not change.
7 September 2021 (age 110): El Salvador makes Bitcoin legal tender.
The first country to put it alongside a national currency, require businesses to accept it as payment, and hold it on the state balance sheet. A nation opted into the 21 million cap.
January 2024 (age 113): U.S. spot Bitcoin ETFs.
The SEC approved exchange-traded products holding spot Bitcoin. Wall Street distribution met a fixed supply. BlackRock, Fidelity, and others became pipes into the same asset.
October 2025 (age 115): Bitcoin hits a new all-time high above $126,000.
Against a dollar whose gold link had been gone for 54 years.
November 2025 (age 115): Czech National Bank buys Bitcoin.
The Czech National Bank became the first central bank in the world to buy Bitcoin.
Self-custody your crypto. Exchanges are not your friend.
Replying to @j_mart
Very wrong. Coinbase tells customers that the customers were hacked while knowing it’s false. Took us a few months, but external forensic firms, secret service were involved. We ultimately traced the hack to a specific Coinbase codebase, the same attacker, (likely Lazarus group, but we’re not 100% sure) repeatedly compromised Coinbase over many months, targeting many different user accounts.
Coinbase is expert at working the legal and political system to avoid accountability. Their default contracts with all customers forces arbitration. Their donations to various congressmen and Trump last election cycle means most DAs and DoJ won’t touch them.
Does that mean accountability is hopeless because of corruption even over black and white ongoing fraud? No, as long as there are people like me willing to face hundreds of thousands or millions in legal fees over malicious harassment, and who have the patience to find or wait for the prosecution.
It’s this simple: if Coinbase agrees not to harass or sue for me for it, I will release the full dossier with full detailed proof.























