Did you know the original Bitcoin client had a Generate Coins button? When activated it would use the CPU to mine Bitcoins. It was removed with Bitcoin 0.3.22 in June 2011 as mining become more specialised and moved away from solo-miners.

Did you know that on 15 August 2010 two TXs that contained 184 BILLION bitcoins were created at block 74,638? This exploited the lack of checks on the values of TX outputs. A fix that enforced the check was deployed 5 hours after the discovery. The problematic TXs was removed.

Over the last 2 years 96% to 99% of the blocks were mined by only six mining pools.

b10c

Bitcoin Mining Centralization in 2025

This post explores Bitcoin Mining Centralization in 2025 by looking at the hashrate share of the current five biggest mining pools. It presents a M...

Did you know that the Bitcoin white paper was created on Windows XP with Open Office Writer 2.4? We know this from the .pdf meta data + WizSec Bitcoin Research recreated the white paper perfectly only in these conditions. At lunch Bitcoin 0.1 was only for Windows. Linux came on 0.2

Few shoots from my 1st 35mm roll of film.

1080 x 1350. Test # 2 with picture inside.📸 Other text. And more more text.

More tests while I was at the museum.

Some new fimulation Im working on.

What are niches that are specific only to the Bitcoin industry? One example: ASICs.

I really miss street photography.

In what step/process does Bitcoin prevent double-spending? Pls answer without searching anywhere or consulting the code.

Dude when I saw this cartoon as a kid on TV, my mind was absolutely blown.

Am I really the only person that just finds all these AI chat things not usefull like at all?

When making a signature you need entropy for each signature(true for Schnorr & ECDSA). Why? Well that's how you hide your private key, you mix your private key with this random number(slightly more complicated) So every time you sign a TX you need a fresh new nonce(entropy) for the signature. The thing is that even if you have 1 single bit of bias in your entropy an attacker can guess your private key. (Yes this happened IRL quite a bit 2013, there are ofc some caveats which I'll hand wave :p) So a new standard was made where you create deterministic entropy(statistically evenly distributed) to be used for signatures. More info on the standard:

IETF Datatracker

RFC 6979: Deterministic Usage of the Digital Signature Algorithm (DSA) and Elliptic Curve Digital Signature Algorithm (ECDSA)

This document defines a deterministic digital signature generation procedure. Such signatures are compatible with standard Digital Signature Algori...

The "funny" part about entropy is that you can't tell if something is actually random. An actually random number can legitimately have well any digits there. There is absolutely no way to tell if something is truly random or not. So the only option to be safe is to make sure the devices you use do what they were mean to do. How do you know that your hww is actually using this standard and not rogue entropy? Well, one solution is to contribute to this entropy using your device that communicates with the hww (like your laptop) This is called "anti-klepto" and is currently only implemented by @BitBoxSwiss and @BlockstreamJade . In the below example, the attacker modified the firmware of the SeedSigner so that it contributes bad entropy to the signature for the TX in question, and this will not raise any suspicion to the user. The reason this was successful is BECAUSE they used a malicious firmware, so if you check the "correct" firmware is loaded on youfirmwarer device you should be ok. But what if there was an error made by the people who implement the wallet firmare? Well, that's why something like the anti-klepto helps. (wrote this a few days ago when someone asked me, seems fit to repost in regards to his new post :D) This is a reply to this post:

X (formerly Twitter)

Nick Farrow (@utxoclub) on X

Today we disclose Dark Skippy - a powerful new method for a malicious signing device to leak secret keys. With a modified signing function, a devi...

THIS LOOKS FUCKING A-MA-ZING! Love eery shot of this trailer.

Have you ever used a Bitcoin HWW directly with Bitcoin Core? If so how did you interact with it?

Test shoots - London, film simulation.

Fine tuning my film simulation. The lens does help a lot :P

Dude, primal is something else. By far the best experience on nostr for me so far!

It is an honor and absolute pleasure to announce @niftynei() 🇺🇸💸🧡 in a starring role in the movie.🤩 Lisa is a #Bitcoin hacker, educator, and @Core_LN contributor. She founded base58btc the bitcoin engineering school and btcplusplus an alpha-packed bitcoin dev event series. ✨