Bitcoin Obituaries

The world's first zero-trust physical Bitcoin wallet. Opendime is a small USB stick that allows you to spend Bitcoin like a dollar bill. Pass it along multiple times. Connect to any USB to check balance. Unseal anytime to spend online. Trust no one.

This page explains the basic framework of Bitcoin's functionality.

Mining pool with a browser Bitcoin Miner written in Java.

Search BTC addresses by proper name. Be alerted by email to Bitcoin address activity.