ethereumj is a pure-Java implementation of the Ethereum protocol. For high-level information about Ethereum and its goals, visit ethereum.org. The ethereum white paper provides a complete conceptual overview, and the yellow paper provides a formal definition of the protocol.

This repository consists of:

• ethereum-core: a library suitable for inclusion in any JVM-based project.
• ethereum-studio: a simple GUI for exploring Ethereum functionality and usage of the ethereumj API.

To see ethereum-studio in action, watch this video.

The Ethereum protocol is under heavy development, thus so is this implementation. See the todo list, GitHub Issues and milestone schedule. Issues are prioritized using waffle.

Chat with us via Gitter or #ethereumj on Freenode.

• Clone this repository and run ./gradlew build (or at least ./gradlew antlr4 to generate sources).
• Import all sources into IntelliJ IDEA (14+) with File->Import project and point to the top-level build.gradle file.
• Make sure to set your language level in File->Project Structure... to JDK 8.
• Run Build->Make Project. When complete, there should be no errors.

For complete details on downloading, building and using etherumj-core and ethereumj-studio, see their respective readme files.

ethereumj is released under the MIT license.