Streaming the 2nd and 3rd run of slow-to-validate blocks on Signet on YouTube now. Next run at 10pm UTC. https://youtube.com/live/gHnrAlVA35A context:

Delving Bitcoin

Consensus Cleanup: demo of slow blocks on Signet

We are going to do a demo of long-to-validate blocks on Signet on Wednesday. Here are instructions on how you can join. The goal of this demo is t...

Trying out @5t34k's "Zaps On Stream" for donations.

Hey @Nick - I wanted to have a look at your Bitcoin Node census data, but the site seems to be down. Is this related to cloudflare?

CENSUS

I've written a bit about a project I've been working on for a while: peer-observer: A tool and infrastructure for monitoring the Bitcoin P2P network for attacks and anomalies

b10c

peer-observer: A tool and infrastructure for monitoring the Bitcoin P2P network for attacks and anomalies

Over the past few years, I’ve been working on monitoring tools for the Bitcoin network. One of these projects is peer-observer: A tool and infras...

I have too many other projects currently, but I think this could be a fun side-project for someone: Can we spot public spy-Electrum servers run by Chainanalysis?

GitHub

Research and exploration: Can we spot public spy-Electrum servers run by Chainalysis? · Issue #11 · 0xB10C/project-ideas

My primary interest here is finding out how many Electrum servers are Chainalysis honey pots and sybils that collect your data, link your addresses...

I've persistent my notes on the May 2023 Bitcoin Core node DoS problems. These are background information for the disclosure from last year. When non-ideal sorting, mass BRC-20 mints, and spy nodes caused a CPU Denial-of-Service on the Bitcoin network:

b10c

Notes on

In October 2024, the Bitcoin Core project disclosed a Denial-of-Service due to inv-to-send sets growing too large, which I authored, for Bitcoin Co...

In the current Bitcoin mining landscape with proxy lools like AntPool & friends, 6 mining pools produce and mine more than 95% of the block templates. Bitcoin mining is highly centralized today.

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...