Michael Sproul a459a9af98 Fix and test checkpoint sync from genesis (#7689)
Fix a bug involving checkpoint sync from genesis reported by Sunnyside labs.


  Ensure that the store's `anchor` is initialised prior to storing the genesis state. In the case of checkpoint sync from genesis, the genesis state will be in the _hot DB_, so we need the hot DB metadata to be initialised in order to store it.

I've extended the existing checkpoint sync tests to cover this case as well. There are some subtleties around what the `state_upper_limit` should be set to in this case. I've opted to just enable state reconstruction from the start in the test so it gets set to 0, which results in an end state more consistent with the other test cases (full state reconstruction). This is required because we can't meaningfully do any state reconstruction when the split slot is 0 (there is no range of frozen slots to reconstruct).
2025-07-02 04:50:33 +00:00
2019-04-15 16:47:35 +10:00
2025-06-05 12:28:06 +00:00

Lighthouse: Ethereum consensus client

An open-source Ethereum consensus client, written in Rust and maintained by Sigma Prime.

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Overview

Lighthouse is:

  • Ready for use on Ethereum consensus mainnet.
  • Fully open-source, licensed under Apache 2.0.
  • Security-focused. Fuzzing techniques have been continuously applied and several external security reviews have been performed.
  • Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
  • Funded by various organisations, including Sigma Prime, the Ethereum Foundation, Consensys, the Decentralization Foundation and private individuals.
  • Actively involved in the specification and security analysis of the Ethereum proof-of-stake consensus specification.

Staking Deposit Contract

The Lighthouse team acknowledges 0x00000000219ab540356cBB839Cbe05303d7705Fa as the canonical staking deposit contract address.

Documentation

The Lighthouse Book contains information for users and developers.

The Lighthouse team maintains a blog at https://blog.sigmaprime.io/tag/lighthouse which contains periodic progress updates, roadmap insights and interesting findings.

Branches

Lighthouse maintains two permanent branches:

  • stable: Always points to the latest stable release.
    • This is ideal for most users.
  • unstable: Used for development, contains the latest PRs.
    • Developers should base their PRs on this branch.

Contributing

Lighthouse welcomes contributors.

If you are looking to contribute, please head to the Contributing section of the Lighthouse book.

Contact

The best place for discussion is the Lighthouse Discord server.

Sign up to the Lighthouse Development Updates mailing list for email notifications about releases, network status and other important information.

Encrypt sensitive messages using our PGP key.

Donations

Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:

  • Gitcoin Grants.
  • Ethereum address: 0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b (donation.sigmaprime.eth).
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Readme Apache-2.0 284 MiB
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