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Kroma aims to be a New Universal ZK Rollup on Ethereum.

Kroma is the first universal stage 2 Layer 2 (L2) on Ethereum. Kroma has been developed based on Optimism Bedrock architecture, and aims to be a universal ZK rollup. Currently, Kroma operates as an Optimistic rollup with ZK fault proofs, utilizing a zkEVM based on Scroll. The goal of Kroma is to eventually transition to a ZK rollup once the generation of ZK proofs becomes more cost-efficient and faster.

Kroma offers lower transactions fees compared to the Ethereum mainnet, with native Ethereum security and EVM equivalence. Our roadmap to transition from Optimistic rollup to ZK rollup sets Kroma apart from other L2 networks. Additionally, Kroma is advancing towards decentralization. As an initial step for this, Kroma has introduced a permissionless validator and challenge system.

For more detailed information about Kroma, check Kroma docs (or spec docs).

• Official Website: Kroma
• Documentation: Kroma Docs
• Blog: Kroma Medium
• Discord: Kroma Discord
• X (Twitter): Kroma X

Read through CONTRIBUTING.md for a general overview of our contribution process. Use the Developer Quick Start to get your development environment set up to start working on the Kroma repository. Then check out our list of Good First Issues to find something fun to work on!

Please refer to the canonical Security Policy document for detailed information about how to report vulnerabilities in this codebase.

All files within this repository are licensed under the MIT License unless stated otherwise.