EIP-4844-pectra (collect blob gas fee) (#12574)

See gnosischain/specs#51

core/state_transition.go

@@ -79,8 +79,6 @@ type StateTransition struct {
 	//some pre-allocated intermediate variables
 	sharedBuyGas        *uint256.Int
 	sharedBuyGasBalance *uint256.Int
-
-	isBor bool
 }
 
 // Message represents a message sent to a contract.
@@ -127,7 +125,6 @@ func IntrinsicGas(data []byte, accessList types2.AccessList, isContractCreation
 
 // NewStateTransition initialises and returns a new state transition object.
 func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition {
-	isBor := evm.ChainConfig().Bor != nil
 	return &StateTransition{
 		gp:        gp,
 		evm:       evm,
@@ -141,8 +138,6 @@ func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition
 
 		sharedBuyGas:        uint256.NewInt(0),
 		sharedBuyGasBalance: uint256.NewInt(0),
-
-		isBor: isBor,
 	}
 }
 
@@ -481,6 +476,10 @@ func (st *StateTransition) TransitionDb(refunds bool, gasBailout bool) (*evmtype
 		if burntContractAddress != nil {
 			burnAmount := new(uint256.Int).Mul(new(uint256.Int).SetUint64(st.gasUsed()), st.evm.Context.BaseFee)
 			st.state.AddBalance(*burntContractAddress, burnAmount, tracing.BalanceChangeUnspecified)
+			if rules.IsAura && rules.IsPrague {
+				// https://github.com/gnosischain/specs/blob/master/network-upgrades/pectra.md#eip-4844-pectra
+				st.state.AddBalance(*burntContractAddress, st.evm.BlobFee, tracing.BalanceChangeUnspecified)
+			}
 		}
 	}
 

erigon-lib/chain/chain_config.go

@@ -75,7 +75,10 @@ type Config struct {
 	TargetBlobGasPerBlock      *uint64 `json:"targetBlobGasPerBlock,omitempty"`
 	BlobGasPriceUpdateFraction *uint64 `json:"blobGasPriceUpdateFraction,omitempty"`
 
-	// (Optional) governance contract where EIP-1559 fees will be sent to that otherwise would be burnt since the London fork
+	// (Optional) governance contract where EIP-1559 fees will be sent to, which otherwise would be burnt since the London fork.
+	// A key corresponds to the block number, starting from which the fees are sent to the address (map value).
+	// Starting from Prague, EIP-4844 fees might be collected as well:
+	// see https://github.com/gnosischain/specs/blob/master/network-upgrades/pectra.md#eip-4844-pectra.
 	BurntContract map[string]common.Address `json:"burntContract,omitempty"`
 
 	// (Optional) deposit contract of PoS chains