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Serve DataColumnSidecarsByRoot for finalized epochs #4394

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Jun 27, 2025
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Serve DataColumnSidecarsByRoot for finalized epochs #4394

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2 changes: 1 addition & 1 deletion specs/fulu/p2p-interface.md
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Expand Up @@ -475,7 +475,7 @@ The response MUST consist of zero or more `response_chunk`. Each _successful_
`response_chunk` MUST contain a single `DataColumnSidecar` payload.

Clients MUST support requesting sidecars since `minimum_request_epoch`, where
`minimum_request_epoch = max(finalized_epoch, current_epoch - MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS, FULU_FORK_EPOCH)`.
`minimum_request_epoch = max(current_epoch - MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS, FULU_FORK_EPOCH)`.
If any root in the request content references a block earlier than
`minimum_request_epoch`, peers MAY respond with error code
`3: ResourceUnavailable` or not include the data column sidecar in the response.
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