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prefer having a separate PR for grafana panels, as long as @ensi321 doesn't miss it _Originally posted by @twoeths in https://github.com/ChainSafe/lodestar/pull/6652#discussion_r1629186946_

feat: implement EIP-7716 - anti-correlation penalty

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A draft to demonstrate EIP-7716. This implementation is built on deneb Please do not merge. Related issue #6848

Fix various places to comply with light client electra spec Will be ready for review after #6986 is merged.

Improve experience of `download-spec-tests`

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### Problem description As the size of spec test files increases in every release (from ~670MB for v1.4.0 to ~780MB for v1.5.0-alpha.3), it takes 20+ minutes for me to download...

### Problem description In ethereum/consensus-specs#3817, `MAX_BLOBS_PER_BLOCK` is moved from preset to config. This poses a challenge in Lodestar since [`BlobSidecarsByRootRequest`](https://github.com/ChainSafe/lodestar/blob/de0d6ab89b575ad20c593acf20d7c97d2c884ab1/packages/types/src/deneb/sszTypes.ts#L65) - a fixed length ssz container depends on it but...

refactor: remove assumption of 3 intervals per slot

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There are a lot of places in Lodestar codebase that assume 3 intervals per slot and thus hard code `3` when calculating seconds into the slot. In preparation of ePBS,...

Add `eventstreamV2`

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We need to communicate fork version during `attestation` and `attester_slashing` since it is modified by EIP-7549. For example, `"aggregation_bits":"0x01"` will mean different validators in pre and post-EIP-7549. This PR adds...

Ambiguity around partial withdrawal

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## Description The term `partial withdrawal` is ambiguous in Electra. In Capella and Deneb, `partial withdrawal` refers to withdrawals on the portion of the validator balance with exceeds 32 ETH...

- Adding Electra (as of `v1.5.0-alpha.8`) support to simpleserialize.com Deneb will remain as default fork as Electra is not live yet. Waiting for Lodestar `1.23.0` to be released

feat: mix in blob schedule when calculating fork digest

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- Mix blob schedule into fork digest calculation - Introduce concept of subscribe boundary. It is a combination of fork boundary and blob schedule boundary that we do subscribe/unsubscribe when...