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EIP4844: various fixes #3019

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Sep 30, 2022
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EIP4844: various fixes #3019

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93cb17d
Eip4844: various fixes
terencechain Sep 29, 2022
06c91e4
Try a different format for epoch
terencechain Sep 29, 2022
779e6e7
Update specs/eip4844/p2p-interface.md
terencechain Sep 29, 2022
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13 changes: 5 additions & 8 deletions specs/eip4844/p2p-interface.md
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Expand Up @@ -33,10 +33,10 @@ The specification of these changes continues in the same format as the network s

## Configuration

| Name | Value | Description |
|------------------------------------------|-------------------------------|---------------------------------------------------------------------|
| `MAX_REQUEST_BLOBS_SIDECARS` | `2**7` (= 128) | Maximum number of blobs sidecars in a single request |
| `MIN_EPOCHS_FOR_BLOBS_SIDECARS_REQUESTS` | `2**13` (= 8192, ~1.2 months) | The minimum epoch range over which a node must serve blobs sidecars |
| Name | Value | Description |
|------------------------------------------|-------------------------------------|---------------------------------------------------------------------|
| `MAX_REQUEST_BLOBS_SIDECARS` | `2**7` (= 128) | Maximum number of blobs sidecars in a single request |
| `MIN_EPOCHS_FOR_BLOBS_SIDECARS_REQUESTS` | `2**13` (= 8192 epochs, ~1.2 months) | The minimum epoch range over which a node must serve blobs sidecars |

## Containers

Expand Down Expand Up @@ -207,10 +207,7 @@ or disconnected at any time.

*Note*: The above requirement implies that nodes that start from a recent weak subjectivity checkpoint
MUST backfill the local blobs database to at least epoch `current_epoch - MIN_EPOCHS_FOR_BLOBS_SIDECARS_REQUESTS`
to be fully compliant with `BlobsSidecarsByRange` requests. To safely perform such a
backfill of blocks to the recent state, the node MUST validate both (1) the
proposer signatures and (2) that the blocks form a valid chain up to the most
recent block referenced in the weak subjectivity state.
to be fully compliant with `BlobsSidecarsByRange` requests.

*Note*: Although clients that bootstrap from a weak subjectivity checkpoint can begin
participating in the networking immediately, other peers MAY
Expand Down
2 changes: 1 addition & 1 deletion specs/eip4844/validator.md
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Expand Up @@ -245,7 +245,7 @@ def get_signed_blobs_sidecar(state: BeaconState, blobs_sidecar: BlobsSidecar, pr
return SignedBlobsSidecar(message=blobs_sidecar, signature=signature)
```

This `signed_blobs_sidecar` is then published to the global `blobs_sidecar` topic as soon as the `beacon_block` is published.
This `signed_blobs_sidecar` is then published to the global `blobs_sidecar` topic as soon as the `signed_beacon_block` is published.

After publishing the sidecar peers on the network may request the sidecar through sync-requests, or a local user may be interested.
The validator MUST hold on to blobs for `MIN_EPOCHS_FOR_BLOBS_SIDECARS_REQUESTS` epochs and serve when capable,
Expand Down