Fix ecotone fee logic

src/Nethermind/Chains/base-mainnet.json

@@ -6,6 +6,7 @@
       "params": {
         "regolithTimestamp": "0x0",
         "bedrockBlockNumber": "0x0",
+        "ecotoneTimestamp": "0x65F23E01",
         "l1FeeRecipient": "0x420000000000000000000000000000000000001A",
         "l1BlockAddress": "0x4200000000000000000000000000000000000015"
       }

src/Nethermind/Chains/base-sepolia.json

@@ -7,6 +7,7 @@
         "regolithTimestamp": "0x0",
         "bedrockBlockNumber": "0x0",
         "canyonTimestamp": "0x6553a790",
+        "ecotoneTimestamp": "0x65D62C10",
         "l1FeeRecipient": "0x420000000000000000000000000000000000001A",
         "l1BlockAddress": "0x4200000000000000000000000000000000000015",
         "canyonBaseFeeChangeDenominator": "250",

src/Nethermind/Chains/op-mainnet.json

@@ -6,6 +6,7 @@
       "params": {
         "regolithTimestamp": "0x0",
         "bedrockBlockNumber": "0x645C277",
+        "ecotoneTimestamp": "0x65F23E01",
         "l1FeeRecipient": "0x420000000000000000000000000000000000001A",
         "l1BlockAddress": "0x4200000000000000000000000000000000000015"
       }

src/Nethermind/Chains/op-sepolia.json

@@ -7,6 +7,7 @@
         "regolithTimestamp": "0x0",
         "bedrockBlockNumber": "0x0",
         "canyonTimestamp": "0x6553a790",
+        "ecotoneTimestamp": "0x65D62C10",
         "l1FeeRecipient": "0x420000000000000000000000000000000000001A",
         "l1BlockAddress": "0x4200000000000000000000000000000000000015",
         "canyonBaseFeeChangeDenominator": "250",

src/Nethermind/Nethermind.Optimism/IOPConfigHelper.cs

@@ -12,6 +12,7 @@ public interface IOPConfigHelper
     bool IsBedrock(BlockHeader header);
     bool IsRegolith(BlockHeader header);
     bool IsCanyon(BlockHeader header);
+    bool IsEcotone(BlockHeader header);
     Address? Create2DeployerAddress { get; }
     byte[]? Create2DeployerCode { get; }
 }

src/Nethermind/Nethermind.Optimism/Nethermind.Optimism.csproj

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <Nullable>enable</Nullable>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup>

src/Nethermind/Nethermind.Optimism/OPConfigHelper.cs

@@ -11,6 +11,7 @@ public class OPSpecHelper : IOPConfigHelper
     private readonly ulong _regolithTimestamp;
     private readonly long _bedrockBlockNumber;
     private readonly ulong? _canyonTimestamp;
+    private readonly ulong? _ecotoneTimestamp;
 
     public Address L1FeeReceiver { get; init; }
 
@@ -19,6 +20,8 @@ public OPSpecHelper(OptimismParameters parameters)
         _regolithTimestamp = parameters.RegolithTimestamp;
         _bedrockBlockNumber = parameters.BedrockBlockNumber;
         _canyonTimestamp = parameters.CanyonTimestamp;
+        _ecotoneTimestamp = parameters.EcotoneTimestamp;
+
         L1FeeReceiver = parameters.L1FeeRecipient;
         Create2DeployerCode = parameters.Create2DeployerCode;
         Create2DeployerAddress = parameters.Create2DeployerAddress;
@@ -36,7 +39,12 @@ public bool IsBedrock(BlockHeader header)
 
     public bool IsCanyon(BlockHeader header)
     {
-        return header.Timestamp >= (_canyonTimestamp ?? long.MaxValue);
+        return header.Timestamp >= _canyonTimestamp;
+    }
+
+    public bool IsEcotone(BlockHeader header)
+    {
+        return header.Timestamp >= _ecotoneTimestamp;
     }
 
     public Address? Create2DeployerAddress { get; }

src/Nethermind/Nethermind.Optimism/OPL1CostHelper.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using Nethermind.Core;
 using Nethermind.Evm;
 using Nethermind.Int256;
@@ -11,40 +12,68 @@
 
 namespace Nethermind.Optimism;
 
-public class OPL1CostHelper : IL1CostHelper
+public class OPL1CostHelper(IOPConfigHelper opConfigHelper, Address l1BlockAddr) : IL1CostHelper
 {
-    private readonly IOPConfigHelper _opConfigHelper;
+    private readonly IOPConfigHelper _opConfigHelper = opConfigHelper;
 
-    private readonly StorageCell _l1BaseFeeSlot;
-    private readonly StorageCell _overheadSlot;
-    private readonly StorageCell _scalarSlot;
+    private readonly StorageCell _l1BaseFeeSlot = new(l1BlockAddr, new UInt256(1));
+    private readonly StorageCell _overheadSlot = new(l1BlockAddr, new UInt256(5));
+    private readonly StorageCell _scalarSlot = new(l1BlockAddr, new UInt256(6));
 
-    public OPL1CostHelper(IOPConfigHelper opConfigHelper, Address l1BlockAddr)
-    {
-        _opConfigHelper = opConfigHelper;
+    private static readonly UInt256 basicDevider = 1_000_000;
 
-        _l1BaseFeeSlot = new StorageCell(l1BlockAddr, new UInt256(1));
-        _overheadSlot = new StorageCell(l1BlockAddr, new UInt256(5));
-        _scalarSlot = new StorageCell(l1BlockAddr, new UInt256(6));
-    }
+    // Ecotone
+    private readonly StorageCell _blobBaseFeeSlot = new(l1BlockAddr, new UInt256(7));
+    private readonly StorageCell _baseFeeScalarSlot = new(l1BlockAddr, new UInt256(3));
+
+    private static readonly UInt256 precisionMultiplier = 16;
+    private static readonly UInt256 precisionDevider = precisionMultiplier * basicDevider;
 
+    [SkipLocalsInit]
     public UInt256 ComputeL1Cost(Transaction tx, BlockHeader header, IWorldState worldState)
     {
+        [SkipLocalsInit]
+        UInt256 ComputeL1CostEcotone(IWorldState worldState, UInt256 dataGas)
+        {
+            // Ecotone formula: (dataGas) * (16 * l1BaseFee * l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar) / 16e6
+            UInt256 l1BaseFee = new(worldState.Get(_l1BaseFeeSlot), true);
+            UInt256 blobBaseFee = new(worldState.Get(_blobBaseFeeSlot), true);
+
+            ReadOnlySpan<byte> scalarData = worldState.Get(_baseFeeScalarSlot);
+
+            const int baseFeeFieldsStart = 16;
+            const int fieldSize = sizeof(uint);
+
+            int l1BaseFeeScalarStart = scalarData.Length > baseFeeFieldsStart ? scalarData.Length - baseFeeFieldsStart : 0;
+            int l1BaseFeeScalarEnd = l1BaseFeeScalarStart + (scalarData.Length >= baseFeeFieldsStart ? fieldSize : fieldSize - baseFeeFieldsStart + scalarData.Length);
+            UInt256 l1BaseFeeScalar = new(scalarData[l1BaseFeeScalarStart..l1BaseFeeScalarEnd], true);
+            UInt256 l1BlobBaseFeeScalar = new(scalarData[l1BaseFeeScalarEnd..(l1BaseFeeScalarEnd + fieldSize)], true);
+
+            return dataGas * (precisionMultiplier * l1BaseFee * l1BaseFeeScalar + blobBaseFee * l1BlobBaseFeeScalar) / precisionDevider;
+        }
+
+        [SkipLocalsInit]
+        UInt256 ComputeL1CostPreEcotone(IWorldState worldState, UInt256 dataGas)
+        {
+            // Pre-Ecotone formula: (dataGas + overhead) * l1BaseFee * scalar / 1e6
+            UInt256 l1BaseFee = new(worldState.Get(_l1BaseFeeSlot), true);
+            UInt256 overhead = new(worldState.Get(_overheadSlot), true);
+            UInt256 scalar = new(worldState.Get(_scalarSlot), true);
+
+            return (dataGas + overhead) * l1BaseFee * scalar / basicDevider;
+        }
+
         if (tx.IsDeposit())
             return UInt256.Zero;
 
-        long dataGas = ComputeDataGas(tx, header);
-        if (dataGas == 0)
+        UInt256 dataGas = ComputeDataGas(tx, header);
+        if (dataGas.IsZero)
             return UInt256.Zero;
 
-        UInt256 l1BaseFee = new(worldState.Get(_l1BaseFeeSlot), true);
-        UInt256 overhead = new(worldState.Get(_overheadSlot), true);
-        UInt256 scalar = new(worldState.Get(_scalarSlot), true);
-
-        return ((UInt256)dataGas + overhead) * l1BaseFee * scalar / 1_000_000;
+        return _opConfigHelper.IsEcotone(header) ? ComputeL1CostEcotone(worldState, dataGas) : ComputeL1CostPreEcotone(worldState, dataGas);
     }
 
-    private long ComputeDataGas(Transaction tx, BlockHeader header)
+    private UInt256 ComputeDataGas(Transaction tx, BlockHeader header)
     {
         byte[] encoded = Rlp.Encode(tx, RlpBehaviors.SkipTypedWrapping).Bytes;
 
@@ -53,6 +82,6 @@ private long ComputeDataGas(Transaction tx, BlockHeader header)
         // Add pre-EIP-3529 overhead
         nonZeroCount += _opConfigHelper.IsRegolith(header) ? 0 : OptimismConstants.PreRegolithNonZeroCountOverhead;
 
-        return zeroCount * GasCostOf.TxDataZero + nonZeroCount * GasCostOf.TxDataNonZeroEip2028;
+        return (ulong)(zeroCount * GasCostOf.TxDataZero + nonZeroCount * GasCostOf.TxDataNonZeroEip2028);
     }
 }

src/Nethermind/Nethermind.Specs/ChainSpecStyle/ChainSpecLoader.cs

@@ -336,6 +336,7 @@ static AuRaParameters.Validator LoadValidator(ChainSpecJson.AuRaValidatorJson va
                 RegolithTimestamp = chainSpecJson.Engine.Optimism.RegolithTimestamp,
                 BedrockBlockNumber = chainSpecJson.Engine.Optimism.BedrockBlockNumber,
                 CanyonTimestamp = chainSpecJson.Engine.Optimism.CanyonTimestamp,
+                EcotoneTimestamp = chainSpecJson.Engine.Optimism.EcotoneTimestamp,
                 L1FeeRecipient = chainSpecJson.Engine.Optimism.L1FeeRecipient,
                 L1BlockAddress = chainSpecJson.Engine.Optimism.L1BlockAddress,
                 CanyonBaseFeeChangeDenominator = chainSpecJson.Engine.Optimism.CanyonBaseFeeChangeDenominator,

src/Nethermind/Nethermind.Specs/ChainSpecStyle/Json/ChainSpecJson.cs

@@ -173,6 +173,7 @@ internal class OptimismEngineJson
             public ulong RegolithTimestamp => Params.RegolithTimestamp;
             public long BedrockBlockNumber => Params.BedrockBlockNumber;
             public ulong? CanyonTimestamp => Params.CanyonTimestamp;
+            public ulong? EcotoneTimestamp => Params.EcotoneTimestamp;
             public Address L1FeeRecipient => Params.L1FeeRecipient;
             public Address L1BlockAddress => Params.L1BlockAddress;
             public UInt256 CanyonBaseFeeChangeDenominator => Params.CanyonBaseFeeChangeDenominator;
@@ -186,6 +187,7 @@ internal class OptimismEngineParamsJson
             public ulong RegolithTimestamp { get; set; }
             public long BedrockBlockNumber { get; set; }
             public ulong? CanyonTimestamp { get; set; }
+            public ulong? EcotoneTimestamp { get; set; }
             public Address L1FeeRecipient { get; set; }
             public Address L1BlockAddress { get; set; }
             public UInt256 CanyonBaseFeeChangeDenominator { get; set; }

src/Nethermind/Nethermind.Specs/ChainSpecStyle/OptimismParameters.cs

@@ -14,6 +14,8 @@ public class OptimismParameters
 
         public ulong? CanyonTimestamp { get; set; }
 
+        public ulong? EcotoneTimestamp { get; set; }
+
         public Address L1FeeRecipient { get; set; }
 
         public Address L1BlockAddress { get; set; }