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Fingerroot 5.0.0 is Here: What You Need To Know About Rootstock’s Upcoming Network Upgrade

Published on: 10 July, 2023

Summary: The Rootstock (RSK) community has approved a set of consensus changes to be included in the upcoming Fingerroot network upgrade. Fingerroot will activate on RSK Mainnet on block #5,468,000. This is a mandatory upgrade; users who adhere to these changes must update their nodes to one of the latest versions.

​​What is a network upgrade?

A network upgrade is a set of changes to the protocol consensus rules, which are activated at a defined block number. All nodes in the network need to run a compatible client version implementing these new consensus rules to work properly. As a consequence, if you adhere to these changes, you will need to upgrade to the new client version before the network upgrade is activated. Otherwise, the non-updated nodes will remain on an incompatible chain.

What changes are included in Fingerroot 5.0.0?

The consensus changes included in this version are:

  • Transaction gas price cap (RSKIP-252)
  • Peg-out events improvements (RSKIP-326)
  • Reestablish the number of block confirmations for a PowPeg migration period (RSKIP-374)
  • Use the pegout creation transaction hash as the key in the map structure that stores the pegout transactions waiting for signatures (RSKIP-375)
  • Store the last retired PowPeg standard P2SH script (RSKIP-377)
  • Increase POWpeg activation age (RSKIP-383)
  • Bridge method `getEstimatedFeesForNextPegOutEvent` improvement (RSKIP-385)

For a detailed description of each consensus change introduced in this network upgrade, please refer to RSKIP 388 Network Upgrade: Fingerroot. You can also find a complete list of the changes introduced in the corresponding GitHub milestone.

When will the network upgrade happen?

RSK Fingerroot 5.0.0 will activate in Mainnet at block #5,468,000. According to the current conditions of the network, activation is likely to occur on Wednesday, July 12th, 2023 around 4:00 PM UTC. In the case of RSK Testnet, the upgrade will happen at block #4,015,800, expected to occur around Wednesday, June 28th, 2023 around 6:00 PM UTC.

Please be aware that these dates can change depending on the conditions of the network, so it is recommended that users upgrade as soon as possible.

Is there anything I need to consider when upgrading to Fingerroot 5.0.0?

There is no other special consideration besides updating your node before the network upgrade activation happens at the defined block numbers.

RSKj Fingerroot 5.0.0’s sha256 sum is 198d13a8676714f289e5707dba3f45c6c2dbc5daa1a08c669e64a41df2fe330a rskj-core-5.0.0-FINGERROOT-all.jar.

See the Reproducible Build guide for further details.

How do I report problems with this version?

It’s essential for us to know any problem you may have while running Fingerroot 5.0.0. Please reach out on RSK Open Slack or by creating issues in the RSK GitHub repository.

How do I report security vulnerabilities?

If you find a security issue, please contact us at, or report it through IOVlabs’ bug bounty program. IOV Labs rewards security experts, software developers, and hackers who dedicate time and effort to improving and protecting the Rootstock network.

Do you have further questions?

Learn more about the latest release and update here:

Please get in touch with the core development team through the 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: