status-im/eth2.0-specs
2
0
Fork 0
mirror of https://github.com/status-im/eth2.0-specs.git synced 2025-01-20 15:38:55 +00:00
Code Issues Projects Releases Wiki Activity

clarify network aggregation vs onchain aggregation

Browse Source
This commit is contained in:
Mehdi AOUADI 2024-03-20 16:31:46 +01:00
parent 5d80b1954a
commit ec633e8871
1 changed files with 22 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
specs/_features/eip7549/validator.md
View File

@ -26,7 +26,28 @@
##### Attestations
Attestations received from aggregators with disjoint `committee_bits` sets and equal `AttestationData` SHOULD be consolidated into a single `Attestation` object.
The network attestation aggregates contain only the assigned committee attestations.
Attestation aggregates received by the block proposer from the committee aggregators with disjoint `committee_bits` sets and equal `AttestationData` SHOULD be consolidated into a single `Attestation` object.
The proposer should run the following function to construct an on chain final aggregate form a list of network aggregates with equal `AttestationData`:
```python
def compute_on_chain_aggregate(network_aggregates: List[Attestation]) -> Attestation:
aggregates = sorted(network_aggregates, key=lambda a: get_committee_indices(a.committee_bits)[0])
data = aggregates[0].data
aggregation_bits = [a.aggregation_bits[0] for a in aggregates]
signature = bls.Aggregate([a.signature for a in aggregates])
committee_indices = [get_committee_indices(a.committee_bits)[0] for a in aggregates]
committee_flags = [(index in committee_indices) for index in range(0, MAX_COMMITTEES_PER_SLOT)]
committee_bits = Bitvector[MAX_COMMITTEES_PER_SLOT](committee_flags)
return Attestation(aggregation_bits=aggregation_bits,
data=data,
committee_bits=committee_bits,
signature=signature)
```
### Attesting