Skip validating tortoise beacon

blocks/blockeligibilityvalidator.go

@@ -90,10 +90,7 @@ func (v BlockEligibilityValidator) BlockSignedAndEligible(block *types.Block) (b
 			numberOfEligibleBlocks, totalWeight)
 	}
 
-	epochBeacon, err := v.beaconProvider.GetBeacon(epochNumber)
-	if err != nil {
-		return false, fmt.Errorf("get beacon for epoch %v: %w", epochNumber, err)
-	}
+	epochBeacon := block.EligibilityProof.TortoiseBeacon
 
 	message, err := serializeVRFMessage(epochBeacon, epochNumber, counter)
 	if err != nil {

blocks/blockoracle.go

@@ -155,8 +155,9 @@ func (bo *Oracle) calcEligibilityProofs(epochNumber types.EpochID) (map[types.La
 
 		eligibleLayer := calcEligibleLayer(epochNumber, bo.layersPerEpoch, vrfSig)
 		eligibilityProofs[eligibleLayer] = append(eligibilityProofs[eligibleLayer], types.BlockEligibilityProof{
-			J:   counter,
-			Sig: vrfSig,
+			J:              counter,
+			Sig:            vrfSig,
+			TortoiseBeacon: epochBeacon,
 		})
 	}
 

common/types/block.go

@@ -228,6 +228,9 @@ type BlockEligibilityProof struct {
 
 	// Sig is the VRF signature from which the block's LayerID is derived.
 	Sig []byte
+
+	// TortoiseBeacon is the tortoise beacon value for this block.
+	TortoiseBeacon []byte
 }
 
 // BlockHeader includes all of a block's fields, except the list of transaction IDs, activation transaction IDs and the
@@ -437,9 +440,11 @@ func NewExistingBlock(layerIndex LayerID, data []byte, txs []TransactionID) *Blo
 		MiniBlock: MiniBlock{
 			BlockHeader: BlockHeader{
 				LayerIndex: layerIndex,
-				Data:       data},
+				Data:       data,
+			},
 			TxIDs: txs,
-		}}
+		},
+	}
 	b.Signature = signing.NewEdSigner().Sign(b.Bytes())
 	b.Initialize()
 	return &b