teku

Teku is a Java implementation of the Ethereum 2.0 Beacon Chain. See the Changelog for details of the latest releases and upcoming breaking changes.

Useful links

• Ethereum 2.0 Beacon Chain specification
• Teku user documentation
• Teku REST API reference documentation
• Teku issues
• Contribution guidelines
• Teku Changelog

Teku users

See our user documentation.

Raise a documentation issue or get in touch in the #teku channel on Discord if you've got questions or feedback.

Teku developers

• Contribution Guidelines
• Coding Conventions

Binary Releases

Binary releases are available from the releases page. Binary builds that track the latest changes on the master branch are available on Dockerhub using the develop version or as binary downloads (tar.gz format or zip format).

We recommend only using release versions for Mainnet, but develop builds are useful for testing the latest changes on testnets.

Release notifications are available via:

• Sign up to our release announcements email list (release and important announcements only, no marketing)
• Follow us on Twitter
• teku in Consensys Discord,
• Subscribe to release notifications on github for teku

Build Instructions

Install Prerequisites

• Java 17+

Note: Official builds of Teku are performed with Java 17. Building on a more recent version of Java is supported, but the resulting build will not work on earlier versions of Java.

Build and Dist

To create a ready to run distribution:

git clone https://github.com/Consensys/teku.git
cd teku && ./gradlew distTar installDist

This produces:

• Fully packaged distribution in build/distributions
• Expanded distribution, ready to run in build/install/teku

Build and Test

To build, clone this repo and run with gradle:

git clone https://github.com/Consensys/teku.git
cd teku && ./gradlew

After a successful build, distribution packages are available in build/distributions.

Other Useful Gradle Targets

Target	Builds
distTar	Full distribution in build/distributions (as .tar.gz)
distZip	Full distribution in build/distributions (as .zip)
installDist	Expanded distribution in build/install/teku
distDocker	The consensys/teku docker image

Code Style

We use Google's Java coding conventions for the project. To reformat code, run:

./gradlew spotlessApply

Code style is checked automatically during a build.

Testing

All the unit tests are run as part of the build, but can be explicitly triggered with:

./gradlew test

Special thanks

YourKit for providing us with a free profiler open source license.

YourKit supports open source projects with innovative and intelligent tools for monitoring and profiling Java and .NET applications. YourKit is the creator of YourKit Java Profiler, YourKit .NET Profiler, and YourKit YouMonitor.