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An index of chains which serves as the source of truth for who’s in the Superchain Ecosystem

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Welcome to the Superchain Registry

Warning

This repository is a work in progress. At a later date, it will be proposed to, and must be approved by, Optimism Governance. Until that time, the configuration described here is subject to change.

The Superchain Registry is an index of chains which serves as the source of truth for who’s in the Superchain and what modifications they’ve made to their chains.

Quickstart

More about the Superchain Registry

The Superchain Registry hosts Superchain-configuration data in a minimal human-readable form and includes mainnet and testnet Superchain targets, along with their respective member chains.

Other configurations, such as contract-permissions and SystemConfig parameters, are hosted and governed onchain.

A list of chains in the registry can be seen in the top level chainList.toml and chainList.json files. These files are autogenerated from scripts in the registry and will remain stable to build against.

A glossary, with key terms and more information about Superchain levels and requirements, is available here.

Downstream packages

The Superchain configs are stored in a minimal form and embedded in downstream OP-Stack software (op-node and op-geth). This means that after a chain has been added to the registry and the dependency on the registry updates in the downstream software, it is possible to start an op-node instance using the --network flag (and also an op-geth instance using the --op-network tag) which will successfully sync with other nodes on that network.

See also this specification on hardfork activation inheritance behavior.

License

MIT License, see LICENSE file.

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An index of chains which serves as the source of truth for who’s in the Superchain Ecosystem

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