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The Open-Transactions project is a collaborative effort to develop a robust, commercial-grade, fully-featured, free-software toolkit implementing the OTX protocol as well as a full-strength financial cryptography library, API, CLI, and prototype server. The project is managed by a worldwide community of volunteers that use the Internet to communicate, plan, and develop the Open-Transactions toolkit and its related documentation.

• About Open-Transactions
• Installation
• Using the command-line tool
• Using the client API
• Using the server
• Test GUI

Open-Transactions implements financial and monetary actions of all stripes. You can use it for issuing currencies/stock, paying dividends, creating asset accounts, sending/receiving digital cash, writing/depositing cheques, cashier's cheques, creating basket currencies, trading on markets, scripting custom agreements, recurring payments, escrow, etc.

It's not just that it does these things, but that it uses strong crypto to do them. The balances are unchangeable (even by a malicious server.) The receipt history is destructible. The transactions are unforgeable. The cash is untraceable. The cheques are non-repudiable. Etc.

This website is the repository of the (open source) Open-Transactions project. For upcoming commercial software built on the Open-Transactions platform, see Monetas.

This product includes software developed by Ben Laurie for use in the Lucre project.