Category : Bitcoin Reddit

Bitcoin Reddit

The 3 rules of the crypto club

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

Visual tool to explain entropy in bitcoin (TRNG, PRNG, ...)

After reading about cases where weak entropy led to unsafe keys and people losing funds (recent bitcoin COLDCARD attack) , I decided to learn more about entropy and how it is generated. There are different ways to generate entropy, like TRNGs,...

How to Invest in Bitcoin

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

ColdCard users lost ~1,367 BTC (~$89M) because a 2021 firmware bug silently swapped hardware RNG for a software one — the case for multi-source, fail-closed entropy

Verification because this sounds unreal: Privacy Guides and The Hacker News both covered it at the start of August 2026 — attackers drained thousands of ColdCard wallets for a total of ~1,367 BTC (~$89M). Root cause: a firmware bug from 2021. During...

RIB

I have a story to tell, but i don't. submitted by /u/wiwila [link] [comments]

What's the best Instant Exchange to sell Bitcoin

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 trus...

I finally own 1% of a Bitcoin

I started with daily investments early this year and before I realized I passed owning 1% of a Bitcoin. Big achievement for me... someone who has never invested in anything. submitted by /u/Neyxium [link] [comments]

bitcoin etf inflows are back while self-custody is under scrutiny

the timing here is pretty interesting. bitcoin spot etfs just had their strongest combined inflow week since april, while the coldcard exploit has pushed a lot more discussion around the risks of self-custody. it creates a strange contrast: more mone...

Rodolfo Novak, Coldcard scammer: "I will take it".

"If quacks like a duck, then it probably is a duck." If Hardware Wallet vendors doing gross negligence do not get into the category of criminal fraud when they do not have certifications and code quality security and security in depth...

Daily Discussion, August 09, 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...

The Future of ColdCard Hardware and Firmware

Coinkite likely won't survive the coming litigations. NVK and Peter Gray won't regain community trust as leaders. But I think it's worth discussing why the ColdCard was a successful product line in the first place and how that design phil...

Bitcoin wasn't broken. The random key generation was. The Coldcard lesson everyone should understand

To explain the Coldcard disaster as simply as possible, imagine you have 3 billion grains of sand, and one grain is marked. If I ask you to find the marked grain, you have to search through billions of grains. Pretty difficult. Now imagine I make a m...

24-bit cryptographic

https://github.com/jasondeanmccann/theseus-24bit-cryptographic-core submitted by /u/Ahuge1 [link] [comments]

ETF vs Robinhood Crypto

I know all the pros and cons of both the ETF and self custody. However, robinhood crypto is not really self custody since its not in my own wallet. I would just be keeping it on the app, I have no interest in getting a wallet. I was wondering if anyo...

Did someone burn 100 BTC?

Exploring the mempool at the famous BTC burn address 1111111111111111111114oLvT2, in this transaction from August 1st, the message appears in German "RIP 100 BTC! Mögest du in der Blockchain in Frieden ruhen!". "R.I.P. 100 BTC! May yo...

What is the most succinct way to explain where bitcoin gets its value from

As the title says, if you had to explain it in one sentence or in the most simple way, how would you. TIA! submitted by /u/altecsz [link] [comments]

THE CHAIN HAS SPLIT

<3% support before the window opened. Good luck, shitcoiners submitted by /u/eyeoft [link] [comments]

This is the block. Decisions are being made.

The last non split block has been mined. Lest see what happens now submitted by /u/Billkr [link] [comments]

My Lightning nodes are closed and shutdown while the 110 stuff resolves itself. How many of you are doing the same?

I have been looking at the possible failure modes of lightning while a possible fork (however short) could happen. I don't want the hassle of watching 2 separate chains while this plays out. Any precautions that you are taking or am I just being...

It's time to find out

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

What are the possible failures of this multi-sig setup?

Setup: Sparrow as the wallet organizer (unsure of technical term) ColdCard as signer 1 (using updated firmware and software generated seed) BitBox signing device as signer 2 with software generated seed Both keys use a 13th word (passphrase) Descrip...

Tax planning for a BTC disposal

I have some BTC, bought very cheap now worth 6 figures basically 90% profit I’m in the U.K. I want to cash in on the next run, assuming it happens I have considered transferring (each year) 52k worth of BTC to my wife, she will sell it pay the CGT on...

New cold-wallet?

Hi All, What is a cold wallet that is recommended except Coldcard of course. Which manufacter has proven 128 bit key production or even 256 bit? what should i look into when purchasing a new brand? Ledger is proven, however it has it's own backl...

We are going to have our moments to shine soon fellow hodlers.

Just wanted to say how many posts ive been seeing in other finance related subreddits related to these people becoming millionaires in their 20s and 30s, etc from their stock portfolios, etc. It feels bizarre how much everyone has been making lately...

You can mix human entropy with hardware wallet entropy using a one time passphrase and BIP85

First let your hardware create a new seed normally. Enable passphrase. Use the passphrase field to enter over 100 dice rolls or any other equivalent entropy and apply. Do not worry about remembering the passphrase. After passphrase is active select B...

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