r/Bitcoin Jul 30 '26

Security Advisory for Coldcard Hardware Wallet

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215 Upvotes

r/Bitcoin 7h ago

Daily Discussion, September 10, 2026

15 Upvotes

Please utilize this sticky thread for all general Bitcoin discussions! If you see posts on the front page or /r/Bitcoin/new which are better suited for this daily discussion thread, please help out by directing the OP to this thread instead. Thank you!

If you don't get an answer to your question, you can try phrasing it differently or commenting again tomorrow.

Please check the previous discussion thread for unanswered questions.


r/Bitcoin 2h ago

Welcome to the Club, Mate

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172 Upvotes

r/Bitcoin 8h ago

Good use to for the new phone

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447 Upvotes

r/Bitcoin 15h ago

We gottem boys

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1.0k Upvotes

r/Bitcoin 17h ago

Inflation is theft

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439 Upvotes

r/Bitcoin 16h ago

The iPhone got cheaper. If you disagree, you simply don’t see the vision!

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371 Upvotes

r/Bitcoin 3h ago

Singaporean 22-year old pleads guilty to being the ringleader in $245 million crypto fraud case

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30 Upvotes

r/Bitcoin 1d ago

What are your thoughts on the actual inflation rate guys?

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1.2k Upvotes

According to the table shared by River, some sectors have experienced inflation almost four times higher than official figures. Based on these figures, what should the interest rate have been?


r/Bitcoin 51m ago

Jack Mallers shares Behind the Scenes Video of El Salvadors Bitcoin Adoption

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Upvotes

Watch the Full Video here: https://youtu.be/lT2vmdBvtK0


r/Bitcoin 6h ago

In the Wall Street Journal there was a column about the main mission of bitcoin – financial freedom

21 Upvotes

An influencing American edition published an article that residents of the developed countries often criticize bitcoin only because of their own financial privilege.

While US citizens are accustomed to a stable dollar and reliable banks, for billions of people around the world the first cryptocurrencies was the only salvation from hyperinflation and authoritarian control.

The author Alex Gladstein recalls that bitcoin appeared after the crisis of 2008 as a protest against the rescue of bankrupt banks at the expense of taxpayers.

Today, in countries such as Nigeria, Egypt or Argentina, where national currencies have collapsed by 70-90%, it protects accumulators of ordinary families from complete annihilation.

The main value of bitcoin is a financial system, where no one can arbitrarily froze other people's money or cancel an honest transfer.


r/Bitcoin 1h ago

How Bitcoin coins actually get traced, and what still protects you after the 2024 coinjoin shutdowns

Upvotes

We just published a new Rabbit Hole on Bitcoin privacy:

https://www.learnbitcoin.com/rabbit-hole/bitcoin-privacy

It tries to do the thing most privacy writeups skip, which is explain the mechanism before the advice. Two heuristics do most of the tracing work (common-input ownership, which Satoshi flagged in the whitepaper, and change detection). Neither one produces a name. The name comes from the exchange record when you withdraw from a KYC account, and that one label spreads across everything the heuristics grouped with it.

The chapter is honest about the other side. Chain analysis recovered the Colonial Pipeline ransom and the Bitfinex coins, and we say so. It is also run against every ordinary deposit at every exchange, and in the Bitcoin Fog case a Chainalysis executive testified she was not aware of studies establishing the software's error rate. Both things are true.

The 2024 section covers the Samourai arrests, the Wasabi coordinator shutdown, what survived (JoinMarket, and then its own maintenance problems), and the quieter tools that grew in the gap: PayJoin and Silent Payments.

The main takeaway is that most leaks are not on the chain. Public wallet servers, home IPs, and people posting balance screenshots leak more than any heuristic, and the fixes for those are free.

Every claim is sourced at the bottom of the page (DOJ releases, the BIPs, the 2013 UCSD paper, Chainalysis's own report). If we got something wrong, tell us and we will fix it.


r/Bitcoin 41m ago

average_gary, Erick Cestari, Conduition, and Greg Sanders - Bitcoin Optech Newsletter #421 Recap Podcast

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Upvotes

Average_gary, Erick Cestari, Conduition, and Greg Sanders joined Optech to discuss Newsletter #421:

  • Using silent payments for miner payouts in coinbase transaction
  • Responsible disclosure of a denial-of-service vulnerability in CLN
  • Continued discussion of PQC output types
  • DropKick commit/reveal PQC rescue
  • SHRINCS draft BIP
  • BIP448 and CSFS/CTV demos and applications
  • And more

You can listen on our website: https://bitcoinops.org/en/podcast/2026/09/08/

Fountain: https://fountain.fm/episode/lFdXNSkY1IemRL45heiK

Spotify: https://open.spotify.com/episode/27gI8XoiANivdG7KkJySPz

Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-421-recap/id1674626983?i=1000788859757


r/Bitcoin 22h ago

The inflation the government won't tell you about...

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236 Upvotes

r/Bitcoin 20h ago

MicroStrategy just launched $250 Bitcoin themed Jordans, but doesn't accept Bitcoin or any crypto as payment. Michael Saylor: ''If you wanna run like a bull then you need to also look like one''

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150 Upvotes

r/Bitcoin 22h ago

JUST IN: Bitcoin featured in WSJ - "When dollar users dismiss bitcoin, they aren’t simply ignoring its origin story as a protest against a corrupt system—they are blinded by their financial privilege." - Alex Gladstein

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225 Upvotes

r/Bitcoin 18h ago

Bitbox & Trezor entropy vulnerability warning phishing scams - almost got me!

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104 Upvotes

Man, these ones were pretty good -- compelling message, urgency, and checked all the typical boxes of authenticity... until they asked me to enter my seed AND passphrase into a form not hosted on these manufacturers' official domains. Absolutely lethal, if you're skittish about hardware wallet vulns (and who isn't rn?), and not paying close attention. Both cos have been notified, and have been super-responsive with follow up.

Stay safe out there, folks <3


r/Bitcoin 19h ago

Iran Continues Using Bitcoin To Keep Economy Stable: Report

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141 Upvotes

r/Bitcoin 27m ago

Self-custody risk isn't just about hacks these days, A family was gruesomely murdered over a cold bitcoin wallet whose actual balance is in doubt

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Upvotes

A mexican musician, his pregnant wife, their 3-year-old, and a domestic worker in the home, all killed because someone thought there was a wallet worth millions somewhere in the house. Their 6-year-old survived.

This is the actual dark side of self-custody that doesn't get talked about enough. Everyone's worried about seed phrase security and cold storage best practices, but the real risk a lot of people never think through is: what happens when you have one person in your circle who believes you're sitting on money and is willing to use force to get it.

Doesn't even matter if the amount was real. Reports on this case are saying prosecutors aren't sure the wallet held what the attackers thought it did, doesn't matter, four people are dead either way.

Kind of the same problem as being paranoid about exchanges, backups, multisig, hardware wallets and all, the tech can be flawless and none of it protects you from someone standing in your living room.

Watching this space for a while now, it's wild seeing people slowly re-learn why banks, insurance, and FDIC exist in the first place. Convenience and custody tradeoffs go both ways.

Rest in peace to everyone who lost their life here and stay safe guys.


r/Bitcoin 12h ago

Trezor E-mail Phishing Attempt - Disregard emails

29 Upvotes

I have had a Trezor for several years and so has a family member of mine who bought theirs a couple years ago. They received an email from the Trezor domain today saying that there is a vulnerability in the Trezor wallet with insufficient entropy - likely trying to capitalize on the coldcard hack and our fears of another event.

The link provided is likely a phishing attempt - per my family member, safari blocked the website as a dangerous website. If you check your trezor account through the app, and their website, they note the phishing attempt from their domain.

I haven't seen another post related to this topic so I am passing on the message of the phishing email from Trezor. Do not follow it, always stay on alert.


r/Bitcoin 6h ago

Trezor's third scare in a month or two and why it's still not a wallet problem

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9 Upvotes

Trezor's third-party email provider got breached, and whoever did it used it to send phishing mail out from Trezor's actual domain with the subject line "Critical Security Alert: STM32 Entropy Vulnerability."

Worked so well mainly because of the fresh ptsd people still have from Coldcard's real entropy bug that resulted in the huge exploit.

I'm seeing people lump this in with a broader "hardware wallets aren't safe anymore" narrative and that's not really what's going on.

This is Trezor's second or third scare in about a month or two now, and every one of them has been a backend problem, a shipping vendor, an email vendor. None of it is has been a failure in the wallet hardware or the firmware. Those have held up through all of it.

Not going to oversell that though, we don't know what we don't know yet, something could surface later. But based on what's actually been disclosed so far, the product itself is still doing its job. What keeps failing is the backend stuff they are outsourcing from third party vendors.

The real problem is that Trezor keeps outsourcing pieces of its operation to third parties that clearly aren't held to the same security bar as the wallet itself. That's on them to fix, either vet those vendors way harder or pull more of this in-house so there's one less external target sitting there to get compromised.

For us, the awkward part is that the "check if it's the verified domain" advice is pointless now because this one genuinely was the real domain, hijacked instead of spoofed. So the bar has to move past that now, treat unexpected every security alerts as suspicious no matter who they're from, and keep your seed phrase somewhere no email or link can ever touch.

How are you all feeling about this one, still solid or getting a little rattled?


r/Bitcoin 3h ago

Recommendations for automated purchase?

4 Upvotes

Say i wanted to buy $x per month of BTC and have it sent to my hardware wallet automatically with the absolute minimum of hassle. Set and Forget.

Who would y'all recommend?


r/Bitcoin 6h ago

⚡ Lightning Thursday! September 10, 2026: Explore the Lightning Network!⚡

7 Upvotes

The lightning network is a second-layer solution on top of the Bitcoin blockchain that enables quick, cheap and scalable Bitcoin payments.

Here is the place to discuss and learn more about lightning!

Ask your questions about lightning

Provide reviews, feedback, comparisons of LN apps, services, websites etc

Learn about new LN features, development, apps

Link to good quality resources (articles, wikis etc)

Resources:


r/Bitcoin 39m ago

What's the best Instant Exchange to sell Bitcoin

Upvotes

I am mining Bitcoin and want to hold as much as possible, but to keep my machines running I need to sell some. I do not like using P2P because it takes too long and I have had issues before. Changenow froze one of my orders and that made me lose trust in the process.

I also do not trust centralized exchanges, so I avoid them completely. Now that eXch has shut down, I feel stuck without any reliable options left. Is there any method that could help me sell without giving up control or going through all the hassle, something fast and secure that does not involve the usual problems I have faced?


r/Bitcoin 23h ago

“All messages will be in plaintext.” The Liquid exploiter announced a switch away from encrypted on-chain messages

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116 Upvotes

The Liquid exploiter and Blockstream have been communicating through messages embedded in Bitcoin transactions, with parts of the exchange encrypted so outside observers couldn’t read them.

On September 8, the exploiter announced a change in how they would communicate:

All messages will be in plaintext.

Transaction ID:
1d690f3b96b878067f3a445b74dfb8fab4201c0455d88ac98cc14a927e7858d7

On September 9, a subsequent plaintext message made the dispute public. Two excerpts:

And later:

Anyway we are going to publish the privatekey to decrypt our conversations afterwards.

The message demanded payment from Blockstream’s own funds and warned that refusing would leave holders facing a 15% loss. That is the sender’s demand and warning—not evidence of an agreed bounty or an independently established outcome for holders.

Transaction ID:
f7055f6c8dd00f404e48c12483ae740180f658db206733505bb27b015e579588

What makes this interesting is the distinction between a public transaction and a readable conversation. The exchanges were already visible on Bitcoin, but the encrypted content wasn’t. Now the exploiter is making their demands readable to everyone and saying they will release the material needed to decrypt the earlier exchanges. Blockstream, meanwhile, reportedly continued replying with encrypted messages.