BeaconKit introduces a revolutionary framework designed to harness the power of the Cosmos-SDK, enabling the creation of a flexible and customizable consensus layer specifically tailored for Ethereum-based blockchains. By utilizing the Engine API, BeaconKit seamlessly integrates with any EVM execution client, ensuring a fully compatible EVM environment without requiring modifications.

This cutting-edge framework is built with modularity at its core, allowing for the easy integration of various layers such as custom block builders, rollup layers, data availability layers, and more. BeaconKit’s versatility extends beyond just Layer 1 blockchains, serving as a foundational framework for developing robust Layer 2 solutions.

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What Is BeaconKit?

BeaconKit is an advanced modular framework engineered for building EVM-based consensus clients. It provides developers with the most user-friendly tools to build and operate an EVM blockchain, ensuring a functionally identical execution environment to that of the Ethereum Mainnet. BeaconKit is not only a consensus client but also a comprehensive framework for constructing EVM-compatible chains.

Operators can run standard unmodified execution clients and achieve perfect / 100% EVM identicality with the Ethereum mainnet. As of today, we have tested BeaconKit with the following execution clients:

• Geth: the Official Go implementation of the Ethereum protocol.
• Erigon: a more performant, feature-rich client forked from go-ethereum.
• Nethermind: a .NET based client with full support for Ethereum protocols.
• Besu: an Enterprise-grade client, Apache 2.0 licensed, written in Java.
• Reth: a Rust-based client focusing on performance and reliability.
• Ethereumjs: a Javascript based client managed by the Ethereum Foundation.

The Technical Backbone of BeaconKit

BeaconKit is a forked implementation of the Golang Cosmos SDK, primarily leveraging CometBFT for its consensus algorithm. As a consensus client, it enables the network—such as an EVM blockchain like Berachain—to reach consensus based on the data provided by the execution client. By adhering to Eth2 modularity principles, which separate consensus from execution, BeaconKit reaps the full benefits of EVM execution clients.

The framework achieves this by conforming to the Engine API, a JSON-RPC API that facilitates communication between consensus and execution clients. This integration allows BeaconKit to maintain a 100% EVM-identical execution environment, ensuring that it fully supports any EVM execution client without the need for custom modifications.

Key Benefits of BeaconKit

BeaconKit offers a host of benefits, making it a powerful tool for developers and blockchain operators:

• Eth2 Modularity: By adhering to the separation of execution and consensus, BeaconKit facilitates seamless communication via the Engine API, enhancing the flexibility and scalability of the blockchain.
• Execution Client Diversity: BeaconKit supports a wide range of EVM execution clients out of the box, avoiding the need to maintain custom forked clients and ensuring compatibility with future upgrades.
• CometBFT Integration: The framework leverages the trusted and battle-tested CometBFT consensus algorithm, ensuring robust security and performance.
• Instant Finality: BeaconKit is capable of achieving Single Slot Finality, offering instant finality compared to Ethereum’s approximate 13-minute finality time.
• EVM Tooling Compatibility: All existing EVM tools are supported by BeaconKit, ensuring seamless integration with the Ethereum ecosystem.
• IBC Support (Coming Soon): BeaconKit will soon support the Inter-Blockchain Communication (IBC) protocol, enabling potential communication between multiple Cosmos chains.
• Modularity: The framework’s modular architecture allows for the potential implementation of custom block builders, rollup layers, data availability layers, and more.

Berachain Node Architecture

The architecture of BeaconKit is composed of several key layers:

• Consensus Layer: This layer ensures the security and integrity of the blockchain by handling block validation, consensus algorithms, and network synchronization.
• Execution Layer: Responsible for executing smart contracts and processing transactions, this layer ensures the correctness of the blockchain’s state.
• Communication Layer: Facilitating communication between the consensus and execution layers, this layer handles message passing and synchronization to maintain the seamless operation of the blockchain.

Conclusion

BeaconKit represents a significant leap forward in the development of Ethereum-based blockchains, offering unparalleled flexibility, modularity, and compatibility. By leveraging the Cosmos-SDK and adhering to Eth2 principles, BeaconKit provides a robust foundation for building and operating EVM blockchains, making it an indispensable tool for developers and blockchain operators alike.

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