Scroll down
Close -

Iris Release v3.1.0 Is Here

We’re pleased to announce that a new RSK Iris release has been published in our GitHub repo. This release contains several enhancements in JSON-RPC interface, Ethereum compatibility fixes and node performance improvements, among other things.

Many of the improvements introduced in this release come from community contributions made within the RSK Hackathon: Building the Future On Bitcoin on the Gitcoin platform recently. Thanks so much to everyone that participated in the event!

How do I upgrade to version 3.1.0?

There are no special considerations for upgrading to this version. Users need to download and update their RSKj node and no other task is required. Also, this is a non-mandatory upgrade; however, we encourage users to upgrade to this new version.

RSKj Iris 3.1.0’s sha256 sum is 07dea8cd7b80e1341c06e1c9f6d15f2b381f5d46443db777ebded194088a5784 rskj-core-3.1.0-PAPYRUS-all.jar. See Reproducible Build guide for further details.

What changes are included in Iris v3.1.0?

This is a list of the most relevant changes included in this version:

  • Added support for newPendingTransactions subscription (#1580)
  • Added support for EIP-1898: add blockHash to JSON-RPC methods which accept a default block parameter. (#1581)
  • Added support for debug_traceBlockByHash JSON-RPC method (#1546)
  • Added support for blockHash filter in eth_getLogs JSON-RPC method (#1527)
  • JSON-RPC compatibility fixes (#1491, #1522, #1564, #1588, #1601)
  • Performance improvements (#1459, #1557, #1569, #1579, #1585)

You can find a complete list of the changes introduced in Iris 3.1.0 milestone.

How do I report problems with this version?

It’s really important for the whole RSK community that users report any problem they may have while running RSKj Iris 3.1.0. Please reach out on RSK Open Slack or directly through creating issues in RSK GitHub repository.

How do I report security vulnerabilities?

If you find a security issue, please contact us at, or report it through our bug bounty program. We reward security experts, software developers and hackers who dedicate time and effort to improve and protect the RSK platform.

Do you have further questions?

Please contact us through our RSK Open Slack for technical questions and support.

You can also reach out with any feedback you would like to share with us through our social media channels and forums:





If you are new to RSK, you may want to check RSK Developers Portal to find out how to start building on the RSK platform.