https://github.com/nethermindeth/catalyst

The preconfer sidecar for Taiko Alethia preconfirmations 🥁
https://github.com/nethermindeth/catalyst

based ethereum layer2 nethermind preconfirmations rollup taiko

Last synced: 4 months ago
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The preconfer sidecar for Taiko Alethia preconfirmations 🥁

• Host: GitHub
• URL: https://github.com/nethermindeth/catalyst
• Owner: NethermindEth
• License: mit
• Created: 2024-05-22T08:20:09.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2025-10-01T08:56:07.000Z (5 months ago)
• Last Synced: 2025-10-01T10:26:36.976Z (5 months ago)
• Topics: based, ethereum, layer2, nethermind, preconfirmations, rollup, taiko
• Language: Rust
• Homepage: https://docs.taiko.xyz/taiko-alethia-protocol/protocol-design/based-preconfirmation/
• Size: 4.49 MB
• Stars: 34
• Watchers: 4
• Forks: 8
• Open Issues: 48
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE.md
  • Codeowners: CODEOWNERS

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# Catalyst: A Taiko Stack preconfer sidecar

Engineered with ❤️ at [Nethermind](https://www.nethermind.io/)

## Features

- ✅ **Validator registration** to the preconfirmation registry at initial setup

- ✅ **Lookahead** submissions and disputes.

- ✅ **Dispute** **against preconfirmations** made by other validators.

- ✅ Execution of the **main preconfirmation duties**, which include:

  - ✅ Checking the lookahead to determine if it's the validator’s turn to preconfirm.

  - ✅ Constructing L2 blocks using the Taiko mempool.

  - ✅ Publishing the L2 block to a preconfirmation P2P network.

  - ✅ Syncing the local Taiko head with the latest preconfirmation state.

  - ✅ Posting L2 blocks through the L1 mempool

## Docker image

### Use the pre-built image

```sh

docker pull nethswitchboard/catalyst-node:latest

```

[The image](https://hub.docker.com/r/nethswitchboard/catalyst-node) is built with [this Github Action](https://github.com/NethermindEth/Catalyst/blob/master/.github/workflows/catalyst_docker_build.yml).

### Build the image locally

```sh

docker build -t node .

```

## Git hooks

Hooks require additional dependencies:

```sh

 cargo install typos-cli cargo-sort cargo-deny

```

## License

MIT. The license is also applied to all commits made before the license introduced.

## Would like to contribute?

see [Contributing](./CONTRIBUTING.md).