Daniel Knopik 37a948cf32 Never use MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS for networks that started with Fulu enabled (#8731)
Lighthouse uses `MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS` for blob **and column retention** instead of `MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS` if Fulu activated less than `MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS` epochs ago - also if Fulu activated at genesis. This causes unexpected behaviour, as there are no blob sidecars to be stored or requested in such networks.


  ~~Add a special case to avoid that logic in post-Fulu genesis networks (`fulu_fork_epoch == 0`)~~

If the blob retention period would start in the fulu fork epoch, use the `min_epochs_for_data_column_sidecars_requests`, as there are no blobs to retain in Fulu.


Co-Authored-By: Daniel Knopik <daniel@dknopik.de>
2026-03-31 11:54:10 +00:00
2026-03-31 05:07:22 +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-2.0 331 MiB
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Makefile 0.1%