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 infrastructure for monitoring the Bitcoin P2P network for attacks and anomalies. This post describes the motivation for starting yet another Bitcoin network observer. It details how the tool works, what my honeypot infrastructure looks like, and finishes with an idea for a decentralized Bitcoin Network Operations Collective and incident response team.| b10c's blog
A collection of articles discussing Bitcoin network observations.| b10c's blog
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 Core versions before v25.0. I have a few notes and screenshots from my investigation back then that I want to persist here. In early May 2023, my monitoring infrastructure noticed this bug affecting mainnet nodes, which allowed me to pinpoint where the problem came from. Credit for working on a fix goes to Anthony Towns.| b10c's blog
This is an update on the LinkingLion entity, presumably linking Bitcoin transactions to IP addresses, I published about a year ago. Yesterday, LionLink Networks AS issued a statement on their non-affiliation with the LinkingLion entity and on the same day, LinkingLion activity significantly dropped.| b10c.me
Over the past few months, I’ve repeatedly observed very short-lived P2P connections with fake user agents being made to my Bitcoin Core node in a high succession. This morning around 7:00 am UTC, these abruptly stopped.| b10c.me