Category : Bitcoin Reddit

Bitcoin Reddit

New Coinkite stickers with every purchase

submitted by /u/bullett007 [link] [comments]

If Coldcard acknowledged the seed generation flaw, shouldn’t they reimburse users who lost BTC?

I’ve been reading about the recent issue where researchers found that the seed generation on certain Coldcard Mk3devices wasn’t as random as it should have been, making it possible under certain conditions to derive affected wallets. This got me thin...

Unbelievable that redditors were recommending Cold Card!

Coinkite (the company behind Cold Card) has 2-10 employees according to their LinkedIn Page. Their venture capital funding (tracked by PitchBook) is listed as $122K, while Tracxn logs it as $115K. This is a boutique shop, essentially a mom and pop es...

Unpopular opinion: self custody isn't right for everyone, here's my story.

With the whole Coldcard thing that just happened, figured it's worth sharing my own experience, even though I know this isnt gonna be a popular opinion here. Back in 2024-2025 i sold off the bitcoin i had left (did a full cycle, accumulated in th...

Is there a final number of how much BTC was stolen from the Coldcard hack?

Just curious about this. submitted by /u/Sweet-Celebration498 [link] [comments]

ColdCard Firmware Update Released

https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/ Updated July 31, 2026: Fixed firmware is now available. Mk4 and Mk5 users must update to version 5.6.0 or later. Q users must update to version 1.5.0Q or later. Do not generate a new se...

Now that Coldcard is exploitable, where to transfer bitcoin?

Simple question, which vendor is the most trusted now? I would like to avoid big mainstream players like Ledger or Trezor. BTC only hardware wallet. The second best player is? submitted by /u/urosino [link] [comments]

if you're on mk4 with no passphrase or dice rolls, i'd move my funds

coinkite said mk4 not affected in early analysis, but i'd not take this risk. submitted by /u/No-Contribution23 [link] [comments]

What is the biggest lesson BTC taught you?

The biggest lesson BTC taught me is that if I plan to hold it for years, the daily chart should not affect my decisions. I still check charts sometimes and adjust the amount I buy based on the price that day, but I'm not to treat every red or gre...

I think today is a good day to remind people about BIP39 seed generation with dice

Do this if you want to sleep like a baby when the next RNG vulnerability comes out submitted by /u/IllllIIlIllIllllIlll [link] [comments]

Coinkite (Coldcard) needs to offer a bounty to the hacker/hackers sweeping the funds

Coinkite needs to entice the hacker to become a white hat, by returning the funds in an organized way. If they offered 10% -?% (after costs are deducted) of the value swept back I am pretty sure the hacker/hacker would prefer to avoid the headache o...

PSA: Don't screenshot ur seed phrases

This SparkKitty malware can scan ur phone's gallery, find seed phrases in photos, and send them to attackers. Crazy part is, infected apps even made it onto official app stores. Keep ur seed phrase offline, delete any screenshots and check which...

ColdCard Headlines

The coming “Bitcoin Hacked” “Is your Bitcoin Safe” “AI Cracks Bitcoin” are going to be obnoxious. This is one company, with an over confident leader whose marketing positioned the ColdCard aura as invincible with the messaging pushed down through th...

Coinkite: Technical Deep Dive into the Entropy Issue

submitted by /u/Worried-Flounder-615 [link] [comments]

Reflection on today's episode

Today's episode literally killed the faith of several hardcore old time bitcoiners and I'm shaken too, not going to lie. Even more than the FTX collapse. Why? The mantra "not your keys, not your coins" was already widely spread out...

Daily Discussion, July 31, 2026

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 yo...

Coldcard vulnerability was avoidable if they had required user-input based randomness

I don't know Coldcard but it seems from what I've read of the exploit, it's because they let the computer generate the random seed and not use anything outside the computer's software. This is kind of unimaginable to miss at the first...

Glad to see so many moving to safety tonight in the onchain data!

It’s remarkable how quickly the network responds to a known vulnerability. "Spend" is a catch all I use on this chart for any Bitcoin movement. It's volume really. PnL is how much the value of every UTXO the last 12 hours has chan...

User lost 3 btc due to Coldcard hack. Check your btc and move it to be safe

submitted by /u/Praecursator007 [link] [comments]

BTC now the DEFAULT payment method on all square invoices

At least for the default square invoice template, BTC is not the default payment method. There is an Opt Out button to opt out of this at the bottom of the email… Still very bullish on BTC. submitted by /u/elipesso [link] ...

Do I get a passphrase?

I currently hold my funds on a Jade Plus. Seeing all this stuff has kinda freaked me out, should I get a 13th word? Im not too experienced in this space submitted by /u/aldis5005 [link] [comments]

Is my Trezor safe 5 okay since it’s open source? Coldcard hack makes me worried about Bluetooth Trezor safe 7.

I’m new to bitcoin and I’m worried if I get a Trezor safe 7 it will be hackabke by Bluetooth now. submitted by /u/Fantastic-Base-1875 [link] [comments]

Has anyone reached out to lawyers/authorities? Let's organize

I've also been affected by the Coldcard mk3 fiasco (fml). I know it's early still but has anyone reached out to the authorities or lawyers, particularly for a class action? I'm pretty certain Coinkite will not make things right and so we&...

Coldcard Q bricked after updating firmware

Coldcard sub is locked. Has anyone else had issues updating firmware? I was on version 1.4.0 and updated to 1.4.1 and the screen went black. I can cycle on and off, green led stays on, but screen goes black after startup. submitted by ...

What can people do temporarily to keep their funds safe?

For those who might be affected or are using a passphrase with their ColdCard, what can they do in the meantime to keep their funds safe? Obviously it’s best to get a different hardware wallet but what is the temporary solution until the new hardware...

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