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

Latest

Jan
12
How is the 21 Million Bitcoin Cap Defined and Enforced?

How is the 21 Million Bitcoin Cap Defined and Enforced?

A deep dive into the code that keeps bitcoin's inflation rate on a predictable schedule.
7 min read
Jan
03
Bitcoin 2021 Annual Review

Bitcoin 2021 Annual Review

Comprehensive coverage of metrics across a number of different verticals in the Bitcoin ecosystem to gauge performance in 2021.
15 min read
Dec
04
2021 Bitcoin Node Performance Tests

2021 Bitcoin Node Performance Tests

Testing full validation syncing performance of 7 Bitcoin node implementations.
11 min read
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