- RFC: Tool for tracking and visualizing Bitcoin address reuse I want to end address reuse in the Bitcoin blockchain. Today, I’m releasing source code for a tool that collects data about address reuse in the blockchain and visualizes it. I’m also releasing visualizations of the data for the first 200,000 blocks in the blockchain (up to September 22, 2012). This is my request for […]
- Account Enumeration and Random User Identifiers Security and user-friendliness are not always at ends, but making a product that is simultaneously user-friendly and secure is harder than a making product that accomplishes only one of those goals. In the battle to balance security and usability, usernames are a topic that is hotly debated amongst software developers and security evaluators. Because usernames […]
- Joining the Blockchain.info Team, OBPP 2014 was a big year for me. My love of crypto-currencies, and their security and privacy possibilities in particular, blossomed. A few of the highlights included: Publishing my first book, Anonymous Bitcoin: How to Keep Your ฿ All To Yourself Delivering online and offline presentations at the Texas Bitcoin conference, Bitcoin in the Beltway conference, […]
Money, Security, and Privacy for the 21st century.