The Beta Hiero Block Node is the implementation of HIP 1081 and serves as the decentralized data lake for the Hiero ledgers block and state information.
The Block Node is responsible for consuming the block streams (defined in HIP 1056), verifying each block’s integrity, storing the blockchain, distributing blocks to downstream clients and maintaining a copy of consensus network state.
The Block Node will also expose additional targeted value adding APIs to the Hiero community such as Proofs.
- Java 21 (temurin recommended)
- Gradle (using the wrapper
./gradlewis highly recommended) - Docker (recommended for running the projects)
- IntelliJ IDEA (recommended for development)
block-node: implementation of the Block Node.simulator: A simulator for the Block Node, which can be used to test the Block Node in a local environment.common: Module responsible for holding common literals, utilities and types used by the other modules.suites: A set of e2e tests that can be used to verify the correctness of the Block Node.tools: A set of command line tools for working with Block Stream files.
Refer to the Hiero Block Node Documentation Overview for more information about the project, design and guides.
Whether you’re fixing bugs, enhancing features, or improving documentation, your contributions are important — let’s build something great together!
Please read the governing Hiero contributing guide for the overall project.
Please read our contributing guide to see how you can get involved.
Hiero uses the Linux Foundation Decentralised Trust Code of Conduct.