Ripple

The XRP Ledger is a decentralized cryptographic ledger powered by a network of peer-to-peer nodes. The XRP Ledger uses a novel Byzantine Fault Tolerant consensus algorithm to settle and record transactions in a secure distributed database without a central operator. The server software that powers the XRP Ledger is called xrpld and is available in this repository under the permissive ISC open-source license. The xrpld server software is written primarily in C++ and runs on a variety of platforms. The xrpld server software can run in several modes depending on its configuration. Build from Source Read the build instructions in BUILD.md If you encounter any issues, please open an issue Key Features of the XRP Ledger [Censorship-Resistant Transaction Processing][]: No single party decides which transactions succeed or fail, and no one can "roll back" a transaction after it completes. As long as those who choose to participate in the network keep it healthy, they can settle transactions in seconds. [Fast, Efficient Consensus Algorithm][]: The XRP Ledger's consensus algorithm settles transactions in 4 to 5 seconds, processing at a throughput of up to 1500 transactions per second. These properties put XRP at least an order of magnitude ahead of other top digital assets. [Finite XRP Supply][]: When the XRP Ledger began, 100 billion XRP were created, and no more XRP will ever be created. The available supply of XRP decreases slowly over time as small amounts are destroyed to pay transaction fees. [Responsible Software Governance][]: A team of full-time developers at Ripple & other organizations maintain and continually improve the XRP Ledger's underlying software with contributions from the open-source community. Ripple acts as a steward for the technology and an advocate for its interests. [Secure, Adaptable Cryptography][]: The XRP Ledger relies on industry standard digital signature systems like ECDSA (the same scheme used by Bitcoin) but also supports modern, efficient algorithms like Ed25519. The extensible nature of the XRP Ledger's software makes it possible to add and disable algorithms as the state of the art in cryptography advances. [Modern Features][]: Features like Escrow, Checks, and Payment Channels support financial applications atop of the XRP Ledger. This toolbox of advanced features comes with safety features like a process for amending the network and separate checks against invariant constraints. [On-Ledger Decentralized Exchange][]: In addition to all the features that make XRP useful on its own, the XRP Ledger also has a fully-functional accounting system for tracking and trading obligations denominated in any way users want, and an exchange built into the protocol. The XRP Ledger can settle long, cross-currency payment paths and exchanges of multiple currencies in atomic transactions, bridging gaps of trust with XRP. Here are some good places to start learning the source code: Read the markdown files in the source tree: src/xrpld/ / .md . Read the levelization document to get an idea of the internal dependency graph. In the big picture, the main function constructs an ApplicationImp object, which implements the Application virtual interface. Almost every component in the application takes an Application& parameter in its constructor, typically named app and stored as a member variable app . This allows most components to depend on any other component. Folder Contents : : ./bin Scripts and data files for XRPL developers. ./Builds Platform-specific guides for building xrpld . ./docs Source documentation files and doxygen config. ./cfg Example configuration files. ./src Source code. Some of the directories under src are external repositories included using git-subtree. See those directories' README files for more details.