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Make attestation timing requirement mandatory #4452

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Make attestation timing requirement mandatory #4452

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9e95e7c
Make attestation timing requirement mandatory
ralexstokes Jul 22, 2025
72d342b
Merge branch 'master' into attestation-timing-requirement
ralexstokes Jul 22, 2025
dda90c7
Run make lint
jtraglia Jul 22, 2025
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12 changes: 6 additions & 6 deletions specs/phase0/validator.md
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Expand Up @@ -597,12 +597,12 @@ each epoch. The `committee`, assigned `index`, and assigned `slot` for which the
validator performs this role during an epoch are defined by
`get_committee_assignment(state, epoch, validator_index)`.

A validator should create and broadcast the `attestation` to the associated
attestation subnet when either (a) the validator has received a valid block from
the expected block proposer for the assigned `slot` or (b)
`1 / INTERVALS_PER_SLOT` of the `slot` has transpired
(`SECONDS_PER_SLOT / INTERVALS_PER_SLOT` seconds after the start of `slot`) --
whichever comes _first_.
A validator MUST create and broadcast the `attestation` to the associated
attestation subnet immediately upon receiving a valid block from the expected
block proposer for the assigned `slot`. If no valid block is received by
`1 / INTERVALS_PER_SLOT` of the `slot` transpiring
(`SECONDS_PER_SLOT / INTERVALS_PER_SLOT` seconds after the start of `slot`), the
validator MUST create and broadcast the attestation at that time.

*Note*: Although attestations during `GENESIS_EPOCH` do not count toward FFG
finality, these initial attestations do give weight to the fork choice, are
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