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Clarify data column sidecar validation rules #4880

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jtraglia merged 3 commits into from
Jan 30, 2026
+9 −4
Merged

Clarify data column sidecar validation rules #4880

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4c10106
gloas: clarify column sidecar validation rules
raulk Jan 29, 2026
8609c64
Run `make lint`
jihoonsong Jan 29, 2026
6d8e02e
Fix nit
jtraglia Jan 29, 2026
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13 changes: 9 additions & 4 deletions specs/gloas/p2p-interface.md
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Expand Up @@ -365,10 +365,11 @@ def is_valid_proposal_slot(state: BeaconState, preferences: ProposerPreferences)
The following validations MUST pass before forwarding the
`sidecar: DataColumnSidecar` on the network:

- _[IGNORE]_ The sidecar's `beacon_block_root` has been seen via a valid signed
execution payload bid. A client MAY queue the sidecar for processing once the
block is retrieved.
- _[REJECT]_ The sidecars's `slot` matches the slot of the block with root
- _[IGNORE]_ A valid block for the sidecar's `slot` has been seen (via gossip or
non-gossip sources). If not yet seen, a client MUST queue the sidecar for
deferred validation and possible processing once the block is received or
retrieved.
- _[REJECT]_ The sidecar's `slot` matches the slot of the block with root
`beacon_block_root`.
- _[REJECT]_ The hash of the sidecar's `kzg_commitments` matches the
`blob_kzg_commitments_root` in the corresponding builder's bid for
Expand All @@ -382,6 +383,10 @@ The following validations MUST pass before forwarding the
- _[IGNORE]_ The sidecar is the first sidecar for the tuple
`(sidecar.beacon_block_root, sidecar.index)` with valid kzg proof.

*Note*: If the sidecar fails deferred validation, its forwarding peers MUST be
downscored retroactively. If validation succeeds, the client MUST re-broadcast
the sidecar.

##### Attestation subnets

###### `beacon_attestation_{subnet_id}`
Expand Down