We’re excited to announce that as of today, we are making RSK Mainnet Beta available. We welcome all users to download and test our just released RSK Bamboo V0.4.0 client node.

RSK Testnet has also been updated to this new client version. If you’ve been using RSK Testnet, please consider upgrading to this version since is not compatible with previous ones. Please see this post for details.

As published a few days ago, Mainnet Beta will be open in a staged approach. We’ll share more information about this in the following days.

This release brings several security and stability improvements, new VM opcodes and bug fixes, among other changes.

This is a summary of the changes included in this release:

• Support for Ethereum Improvement Proposal 658 (#333)
• Trie serialization/deserialization improvements (#315)
• RETURNDATASIZE and RETURNDATACOPY new opcodes (#306)
• Bridge native contract improvements (#341, #346, #347, #378)
• Bug fixes (#301, #312, #314, #335)

You can find a complete list of the changes introduced in the corresponding Github milestone.

This release’s sha256 sum is b5d8fb67683dc56a30584f234a77f7f9a4145fb7bfac7c5ec105108ee11d744c rskj-core-0.4.0-BAMBOO-all.jar. See Reproducible Build guide for further details.

Please reach out with any feedback you would like to share, you can reach us on our Gitter community or directly through creating issues in our Github repository. Also, RSK Vulnerability Bounty Program, which rewards developers for reporting not yet identified platform vulnerabilities, has already kicked off.

If you are new to RSK, you may want to check our Starting with RSK guide to find out how to start working on the RSK platform.