Skip to content
Back to Blog
Ecosystem Updates

Bamboo Mainnet Beta Release (V0.4.0) Is Here

Read Time: 1 mins
Bamboo Mainnet Beta Release (V0.4.0) Is Here

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. 

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 Discord 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.

Recommended articles

Merged Mining in Action: Bridging Secured by Miners, Not Just Signers

Merged Mining in Action: Bridging Secured by Miners, Not Just Signers

Most people evaluate Bitcoin bridges with a simple shortcut: is it a federation, or is it a validator model? In that mental model, a federation bridge is a multisig controlled by a set of known parties. A validator model is a separate group that watches one chain and attests to actions on another. Both categories […]

Fundamentals
PowPeg Composition Change: Signer Set Update

PowPeg Composition Change: Signer Set Update

The Rootstock network will undergo a PowPeg Composition Change at Bitcoin block 8,558,281, (estimated around February 23, 2026). As part of this update, the Bitcoin address used to peg in BTC to Rootstock will change. After activation, users should simply verify the new deposit address before sending BTC, as they normally would. No other action […]

Ecosystem Updates
Simplifying DAO Development with the Rootstock Collective SDK

Simplifying DAO Development with the Rootstock Collective SDK

The Rootstock Collective SDK is the easiest way for developers to integrate with the Rootstock Collective DAO. Designed with modern dApp development in mind, it abstracts the complexity of interacting with multiple smart contracts into a clean, modular, and type-safe TypeScript interface. Built on top of viem, the SDK delivers a familiar, high-performance experience, especially […]

Developer Resources