Cypherpunk Cogitations
Jameson Lopp's thoughts on Bitcoin, Privacy, and Freedom.

Latest

Nov
13
To Swat a Swatter

To Swat a Swatter

The conclusion to a 4 year long investigation in pursuit of the person behind an extortion attempt.
11 min read
Nov
07
Metal Bitcoin Seed Storage Stress Test (Round V)

Metal Bitcoin Seed Storage Stress Test (Round V)

Jameson stress tests a dozen new seed backup devices.
12 min read
Aug
22
Satoshi Roundtable VII Recap

Satoshi Roundtable VII Recap

A review of selected topics covered at the 2021 unconference including Lightning Network, Bitcoin UX, DeFi, Smart Contracts, Astrology, and Identity.
9 min read
Aug
07
Lightning Liquidity Management Guide

Lightning Liquidity Management Guide

Lessons learned from running a routing node on the Lightning Network.
23 min read
Aug
01
2021 Altcoin Node Sync Tests

2021 Altcoin Node Sync Tests

Testing full validation sync performance of 16 altcoin node implementations in 2021.
20 min read
Jul
18
How to Protect Contact Forms from Spam with Proof of Work

How to Protect Contact Forms from Spam with Proof of Work

An argument and guide for using hashcash puzzles to protect contact forms from spammers instead of captchas.
6 min read
May
29
Empty Blocks, Full Mempool

Empty Blocks, Full Mempool

An analysis of Bitcoin blocks mined without any transactions even when there were transactions waiting to be confirmed.
7 min read
May
08
WWII Mission Logs, 527th Bombardment Squadron

WWII Mission Logs, 527th Bombardment Squadron

A collection of journal entries by Clifford Lopp, detailing bombing runs flown over Nazi occupied Europe in 1945.
13 min read
May
06
Tor-Only Bitcoin & Lightning Guide

Tor-Only Bitcoin & Lightning Guide

A detailed guide to improving your privacy as a Lightning Network user.
7 min read
Apr
25
Custodial Bitcoin Interest Service Reviews

Custodial Bitcoin Interest Service Reviews

Jameson tests onboarding to a dozen interest generating bitcoin custody services in a hunt for red flags.
12 min read