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compute KZG_COMMITMENT_INCLUSION_PROOF_DEPTH

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dapplion 2023-10-27 16:14:17 +03:00
parent e8bccecba5
commit 29bbdf4393
1 changed files with 3 additions and 3 deletions
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specs/deneb/p2p-interface.md
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@ -51,8 +51,8 @@ The specification of these changes continues in the same format as the network s
| `MAX_REQUEST_BLOB_SIDECARS` | `MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK` | Maximum number of blob sidecars in a single request |
| `MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS` | `2**12` (= 4096 epochs, ~18 days) | The minimum epoch range over which a node must serve blob sidecars |
| `BLOB_SIDECAR_SUBNET_COUNT` | `6` | The number of blob sidecar subnets used in the gossipsub protocol. |
| `KZG_COMMITMENT_INCLUSION_PROOF_DEPTH` | `17` | Merkle proof for `blob_kzg_commitments` list item |
| `BLOB_KZG_COMMITMENT_GINDEX` | `27` | Gindex path to `blob_kzg_commitments` on `BeaconBlockBody` container
| `BLOB_KZG_COMMITMENTS_GINDEX` | `4 ** 2 + 11` (= 27) | `blob_kzg_commitments` field gindex on `BeaconBlockBody` container |
| `KZG_COMMITMENT_INCLUSION_PROOF_DEPTH` | `floorlog2(BLOB_KZG_COMMITMENTS_GINDEX) + ceillog2(MAX_BLOB_COMMITMENTS_PER_BLOCK) + 1` | Merkle proof for `blob_kzg_commitments` list item |
### Containers
@ -87,7 +87,7 @@ class BlobIdentifier(Container):
```python
def verify_blob_sidecar_inclusion_proof(blob_sidecar: BlobSidecar) -> bool:
commitment_item_gindex = MAX_BLOB_COMMITMENTS_PER_BLOCK + blob_sidecar.index
gindex = BLOB_KZG_COMMITMENT_GINDEX + commitment_item_gindex << floorlog2(BLOB_ZKG_COMMITMENT_GINDEX)
gindex = BLOB_KZG_COMMITMENTS_GINDEX + commitment_item_gindex << floorlog2(BLOB_KZG_COMMITMENTS_GINDEX)
return is_valid_merkle_path(
leaf=blob_sidecar.kzg_commitment.hash_tree_root(),
branch=blob_sidecar.commitment_inclusion_proof,