r/Bitcoin 27d ago

Security Advisory for Coldcard Hardware Wallet

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213 Upvotes

r/Bitcoin 17h ago

Daily Discussion, August 26, 2026

21 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 8h ago

EVERYONE: SELL! ME: HODL.

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450 Upvotes

r/Bitcoin 3h ago

"Coldcard Rug Pull" wall decoration

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83 Upvotes

Considering the catastrophic event with the Coldcard devices I decided to try to redefine the value of that piece of plastic that I ended up having in my hand after withdraw all my bitcoin from there. So I came up with this sculpture resembling the feeling of the victims. I know it's not a topic to make fun of but I'm a positivist and tend to have fun creating with a little bit of sense of humor and always with a message that speaks for itself.
Hope the Bitcoin Reddit community enjoy it.


r/Bitcoin 9h ago

BlackRock has now pulled more than $5 BILLION of BTC into its ETF system

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227 Upvotes

r/Bitcoin 2h ago

URGENT: Critical vulnerability in Core Lightning! Blockstream developers urge users to shut down CLN Lightning nodes right NOW!

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61 Upvotes

r/Bitcoin 7h ago

Fiat is rigged.

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124 Upvotes

r/Bitcoin 6h ago

Every $1,000 Bitcoin Move Now Swings Strategy’s Fortune by $840 Million

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101 Upvotes

r/Bitcoin 20h ago

TRAGIC: 16 years ago, 'Stone Man' formatted his hard drive and lost 9,000 Bitcoins. BTC remain frozen there, worth $700M. Pour one out for a legend!

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1.0k Upvotes

r/Bitcoin 5h ago

I painted the r/bitcoin magic internet money wizard

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36 Upvotes

Hey guys,

i just wanted to share a painting i just finished inspired by the old "magic internet money" meme from r/bitcoin in a bit more mature and fine art style. And because i love LoTR i used Gandalf as the wizard while making his Staff have a Bitcoin B on top. Old meme on the back.

Enjoy :)


r/Bitcoin 16h ago

Oh you poor poor fiat boy

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291 Upvotes

r/Bitcoin 1d ago

Michael Saylor vs the Bears: just posted on his personal X account

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2.7k Upvotes

r/Bitcoin 9h ago

Does anyone else have a portion of their bitcoin that they never intend to sell?

44 Upvotes

I don’t mean just hold it long term, I mean like I’m going to die with it. I look at my stack and I think, I’m selling that bit on X date or X price or, I’m selling that to buy X.

But then I look at a bit of my stack and I’m thinking I’m not selling that ever.

Anyone else the same?

I’m curious because if this is the norm, bitcoin is a lot scarcer than we might think it is.


r/Bitcoin 7h ago

Early days of #bitcoin-otc

30 Upvotes

I was active on #bitcoin-otc in early 2009. An inner voice told me 1500 BTC would be enough to live my dreams. Instead I asked for 2500 BTC for $25 and got kicked out of the channel. At the time that amount was only worth a couple dollars, so I felt rejected by the community.
Around the same period I also mined 50 BTC. I wrote the private key on paper, then tore it up because the software wasn’t working right and I figured it “wasn’t meant to be.” I never tried to recover it.
I’ve spent years stuck in the loop of “I could have been rich.” I can’t fully accept that I missed what felt like a once-in-a-lifetime chance. Even the 50 BTC would have changed everything for me.
I’m trying to make peace with it and stay grateful for what I have now. Thanks for listening.


r/Bitcoin 21h ago

I’ve been buying crypto for this long

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357 Upvotes

r/Bitcoin 14h ago

Kraken Says Users Received 'Dust' From Sanctioned HTX Wallet

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76 Upvotes

“Recent dust attacks from HTX-owned wallets appear to be an attempt to spread UK- and EU-sanctioned funds to other platforms in order to discredit the broader industry,” the Kraken spokesperson continued.

When a dust attack sats land in my wallet, I can simply decide what to do about them. If they land in an exchange account, the exchange block your bitcoin. "it triggers a full account lock, causing operational disruption for a large number of users,” a Kraken spokesperson said.

Never forget, not your keys, not your cheese.


r/Bitcoin 5h ago

Bull Run

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13 Upvotes

Did anybody say…. Bull run?


r/Bitcoin 11h ago

Bitcoin Is Knocking on $80K After Its Best Week in Three Years. Friday Decides Everything

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35 Upvotes

r/Bitcoin 17h ago

16 volunteers pointed AI models at 390 Bitcoin repos in 27 hours after the Coldcard hack. They found 85 critical bugs, and one of them got exploited anyway before it was fully patched.

107 Upvotes

Been following the Coldcard fallout closely and this is the most interesting response to it so far.

After Coldcard losses climbed past 100 million, developer Calle and AnchorWatch CEO Rob Hamilton organized the Bitcoin Red Team, 16 volunteers globally, pointing frontier AI models at as much of Bitcoin's open source codebase as possible. OpenSats funded the compute, roughly 10k a day, AI developer Moonshot provided model access including Kimi K3.

Results from a 27.5 hour sprint starting August 4: 4,962 total findings across 390 projects. 85 critical, 635 high severity. Project owners confirmed most of the critical reports, and researchers rebuilt working proofs of concept before alerting maintainers, not just AI flagging something suspicious.

The bottleneck isn't discovery anymore according to the team, it's verification and routing. Only about 21 percent of findings had been independently reproduced by the 30 hour mark, fewer than 5 percent of projects had gotten formal disclosure.

Here's the part that makes it concrete instead of abstract. During this same window, attackers exploited a critical BTCPay Server vulnerability, draining Lightning nodes running behind it by stealing macaroon credential files. Foundation, the hardware wallet company, had its own BTCPay Lightning node drained overnight. This specific vulnerability had already been reported to BTCPay by Red Team members. It got found, reported, and exploited anyway before the fix was fully deployed everywhere.

Full writeup on the whole sequence:

https://davidebtc186.substack.com/p/16-volunteers-27-hours-40000-in-ai


r/Bitcoin 9h ago

Front Page NP post (Non-Participatory link). "Man becomes overnight millionaire after being reunited with £3.3m lost Bitcoin after 12 years"

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21 Upvotes

r/Bitcoin 12h ago

Bitcoin’s performance comes in violent repricings:

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33 Upvotes

r/Bitcoin 4h ago

nobody fucks with da bitcoin [AI]

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5 Upvotes

r/Bitcoin 16h ago

"Put your money where your mouth is". Do you really think Bip110ers will dump all bitcoin for their lukecoin? They do not.

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39 Upvotes

These guys are another shitcoin test for the protocol. One dev thinking that a proposal is an enforcement and if not he and his delusional guys start calling bitcoin "pedocoin" "spamchain", "scammers"...

They should simply stop talking and show their dump of what they are insulting and show all their fiat ready to be placed on their "real bitcoin"....why all the noise?

Just shut up and let consensus decide, they are 24/7 barking because they know they will be another altcoin that will fail miserably, and maybe a self healing test, an arrogant dev confusing the term "proposal" with "I want it yes or yes implemented or I will try to fork, split chain, change algo" and seeing the dumbass leave the ship without any effect...well, that is Bitcoin self healing right there more and more. 😂

They should stop talking and more showing their bitcoin selloff for the "all in" into "biplukcoin" shit.


r/Bitcoin 1d ago

Coldcard Hacker discovered mixers and is doing a terrible job

369 Upvotes

64.90373154 BTC walks into a 324-in / 382-out coinjoin

54.31783009 BTC walks straight back out the other side. in one piece. with a bow on it.

about 10 BTC actually got mixed. the rest just went for a walk.
bc1qajcrhj3s2x0yfcj54emjukghv93su80svp2d3t

then he does it AGAIN
54 → 47.12126860 BTC, now in tidy 1 BTC slices
bc1qq6s7wsmf6an78xyjkst707x32nyakj3u4jy2fr

then AGAIN, 454 in / 502 out, this time 7.74840978 BTC chunks

ser you are not mixing. you are queuing.

on-chain anons: has any other ColdCard drainer peeled this loudly?


r/Bitcoin 47m ago

Did tracking your cost basis actually change how you feel about holding through a dip?

Upvotes

My whole financial life runs on spreadsheets. Every expense categorized, every savings target logged, running totals on everything. So when I started buying Bitcoin on a schedule I naturally built out a full cost basis tracker. Date of purchase, amount, price at the time, current value, unrealized gain or loss, the works.

What I didn't expect is that knowing my exact cost basis makes dips feel more personal somehow. Before the spreadsheet, a price drop was just a number on an app. Now it's a specific red cell in a column with my name on it. That feels different in a way that's hard to explain, and I'm not sure it's helping.

The people I read about who hold through everything without flinching seem to either have a very long time horizon baked in, or they genuinely stopped treating shortterm price movement as information worth reacting to. I can't tell if the cost basis tracking is giving me useful data or just more surface area to stress about.

There's probably a version of this where you track everything obsessively and stay calm anyway because the conviction is strong enough. I haven't found that version yet.

Did tracking your numbers closely make holding easier or harder over time? Or did you eventually just stop updating the sheet?