open source electronic cash
The opencoin project implements "digital cash". The system gives minting software, wallet software and everything that is necessary to have a system for anonymous electronic transactions. It can be used for vouchers, online payments, complementary currencies etc.
opencoin defines standards and provides an implementation around the system as invented by David Chaum, known as electronic cash / digicash. The software and specs are opensource under a GPL License.
Quicklinks
Most people find the following interesting:
- Installing the mobile phone wallet
- The original specification of the opencoin protocol
- opencoin crypto report / summary (pdf)
- Playground (web wallet server for testing)
Infrastructure
We work mostly in a virtual setting. Here a couple of links to our working tools
- The workspace where we share documents and notes.
- There are mailing lists we use for our communication
- We have a bugtracker and a trac with our source code
- There is a subversion repository
- The root certificate of the private CA used for this https server is currently expired :-(

