Update

src/Miningcore/Blockchain/Ethereum/Configuration/EthereumPoolConfigExtra.cs

@@ -13,6 +13,16 @@ public class EthereumPoolConfigExtra
     /// Useful to specify the real chain type when running geth
     /// </summary>
     public string ChainTypeOverride { get; set; }
+
+	/// <summary>
+    /// There are several reports of bad actors taking advantage of the old "Ethash Stratum V1" protocol in order to perform multiple dangerous attacks like man-in-the-middle (MITM) attacks
+    /// https://braiins.com/blog/hashrate-robbery-stratum-v2-fixes-this-and-more
+    /// https://eips.ethereum.org/EIPS/eip-1571
+    /// https://github.com/AndreaLanfranchi/EthereumStratum-2.0.0/issues/10#issuecomment-595053258
+    /// Based on that critical fact, mining pool should be cautious of the risks of using a such deprecated and broken stratum protocol. Used it at your own risks.
+    /// "Ethash Stratum V1" protocol is disabled by default
+    /// </summary>
+    public bool enableEthashStratumV1 { get; set; } = false;
 
     /// <summary>
     /// getWork stream published via ZMQ

src/Miningcore/Blockchain/Ethereum/EthereumConstants.cs

@@ -40,7 +40,7 @@ public class EthereumConstants
 public class RethereumConstants
 {
     public const ulong EpochLength = 32000;
-    public const ulong LondonHeight = 15787969;
+    public const ulong LondonHeight = 13524557;
     public const decimal LondonBlockReward = 3.0m;
     public const ulong ArrowGlacierHeight = 27200177;
     public const decimal ArrowGlacierBlockReward = 2.0m;
@@ -62,6 +62,33 @@ public class EthereumClassicConstants
     public const decimal BaseRewardInitial = 5.0m;
 }
 
+// OCTA block reward distribution - 
+// https://docs.octa.space/cryptocurrency/monetary-policy
+public class OctaSpaceConstants
+{
+    public const ulong TriangulumHardForkHeight = 10000000;
+    public const decimal TriangulumBlockReward = 1.0m;
+    public const ulong VegaHardForkHeight = 8000000;
+    public const decimal VegaBlockReward = 1.1m;
+    public const ulong BlackeyeHardForkHeight = 6000000;
+    public const decimal BlackeyeBlockReward = 1.2m;
+    public const ulong DneprHardForkHeight = 4000000;
+    public const decimal DneprBlockReward = 1.85m;
+    public const ulong MahasimHardForkHeight = 3000000;
+    public const decimal MahasimBlockReward = 2.3m;
+    public const ulong PolarisHardForkHeight = 2500000;
+    public const decimal PolarisBlockReward = 2.8m;
+    public const ulong SpringwaterHardForkHeight = 2000000;
+    public const decimal SpringwaterBlockReward = 3.0m;
+    public const ulong ZagamiHardForkHeight = 1500000;
+    public const decimal ZagamiBlockReward = 3.5m;
+    public const ulong OldenburgHardForkHeight = 1000000;
+    public const decimal OldenburgBlockReward = 4.0m;
+    public const ulong ArcturusHardForkHeight = 650000;
+    public const decimal ArcturusBlockReward = 5.0m;
+    public const decimal BaseRewardInitial = 6.5m;
+}
+
 // Callisto Monetary Policy
 // https://github.com/EthereumCommonwealth/Roadmap/issues/56
 public class CallistoConstants
@@ -147,6 +174,7 @@ public enum EthereumNetworkType
     Canxium = 3003,
     Rethereum = 622277,
     Bitnet = 210,
+	OctaSpace = 800001,
 
     Unknown = -1,
 }
@@ -169,6 +197,7 @@ public enum GethChainType
     Canxium = 3003,
     Rethereum = 622277,
     Bitnet = 210,
+	OctaSpace = 800001,
 
     Unknown = -1,
 }

src/Miningcore/Blockchain/Ethereum/EthereumPayoutHandler.cs

@@ -160,7 +160,7 @@ public async Task<Block[]> ClassifyBlocksAsync(IMiningPool pool, Block[] blocks,
                             var gasUsed = blockHashResponse.Response.GasUsed;
 
                             var burnedFee = (decimal) 0;
-                            if(extraPoolConfig?.ChainTypeOverride == "Ethereum" || extraPoolConfig?.ChainTypeOverride == "Main" || extraPoolConfig?.ChainTypeOverride == "MainPow" || extraPoolConfig?.ChainTypeOverride == "Ubiq" || extraPoolConfig?.ChainTypeOverride == "EtherOne" || extraPoolConfig?.ChainTypeOverride == "Pink" || extraPoolConfig?.ChainTypeOverride == "JibChain" || extraPoolConfig?.ChainTypeOverride == "Altcoin" || extraPoolConfig?.ChainTypeOverride == "Pom" || extraPoolConfig?.ChainTypeOverride == "MaxxChain" || extraPoolConfig?.ChainTypeOverride == "Canxium" || extraPoolConfig?.ChainTypeOverride == "Rethereum" || extraPoolConfig?.ChainTypeOverride == "Bitnet")
+                            if(extraPoolConfig?.ChainTypeOverride == "Ethereum" || extraPoolConfig?.ChainTypeOverride == "Main" || extraPoolConfig?.ChainTypeOverride == "MainPow" || extraPoolConfig?.ChainTypeOverride == "Ubiq" || extraPoolConfig?.ChainTypeOverride == "EtherOne" || extraPoolConfig?.ChainTypeOverride == "Pink" || extraPoolConfig?.ChainTypeOverride == "JibChain" || extraPoolConfig?.ChainTypeOverride == "Altcoin" || extraPoolConfig?.ChainTypeOverride == "Pom" || extraPoolConfig?.ChainTypeOverride == "MaxxChain" || extraPoolConfig?.ChainTypeOverride == "Canxium" || extraPoolConfig?.ChainTypeOverride == "Rethereum" || extraPoolConfig?.ChainTypeOverride == "Bitnet" || extraPoolConfig?.ChainTypeOverride == "OctaSpace")
                                 burnedFee = (baseGas * gasUsed / EthereumConstants.Wei);
 
                             block.Hash = blockHash;
@@ -291,7 +291,7 @@ public async Task PayoutAsync(IMiningPool pool, Balance[] balances, Cancellation
         // ensure we have peers
         var infoResponse = await rpcClient.ExecuteAsync<string>(logger, EC.GetPeerCount, ct);
 
-        if((networkType == EthereumNetworkType.Main || extraPoolConfig?.ChainTypeOverride == "Classic" || extraPoolConfig?.ChainTypeOverride == "Mordor" || networkType == EthereumNetworkType.MainPow || extraPoolConfig?.ChainTypeOverride == "Ubiq" || extraPoolConfig?.ChainTypeOverride == "EtherOne" || extraPoolConfig?.ChainTypeOverride == "Pink" || extraPoolConfig?.ChainTypeOverride == "JibChain" || extraPoolConfig?.ChainTypeOverride == "Altcoin" || extraPoolConfig?.ChainTypeOverride == "Pom" || extraPoolConfig?.ChainTypeOverride == "MaxxChain" || extraPoolConfig?.ChainTypeOverride == "Canxium" || extraPoolConfig?.ChainTypeOverride == "Rethereum" || extraPoolConfig?.ChainTypeOverride == "Bitnet") &&
+        if((networkType == EthereumNetworkType.Main || extraPoolConfig?.ChainTypeOverride == "Classic" || extraPoolConfig?.ChainTypeOverride == "Mordor" || networkType == EthereumNetworkType.MainPow || extraPoolConfig?.ChainTypeOverride == "Ubiq" || extraPoolConfig?.ChainTypeOverride == "EtherOne" || extraPoolConfig?.ChainTypeOverride == "Pink" || extraPoolConfig?.ChainTypeOverride == "JibChain" || extraPoolConfig?.ChainTypeOverride == "Altcoin" || extraPoolConfig?.ChainTypeOverride == "Pom" || extraPoolConfig?.ChainTypeOverride == "MaxxChain" || extraPoolConfig?.ChainTypeOverride == "Canxium" || extraPoolConfig?.ChainTypeOverride == "Rethereum" || extraPoolConfig?.ChainTypeOverride == "Bitnet" || extraPoolConfig?.ChainTypeOverride == "OctaSpace") &&
            (infoResponse.Error != null || string.IsNullOrEmpty(infoResponse.Response) ||
                infoResponse.Response.IntegralFromHex<int>() < EthereumConstants.MinPayoutPeerCount))
         {
@@ -431,6 +431,30 @@ internal static decimal GetBaseBlockReward(GethChainType chainType, ulong height
 
 	    case GethChainType.Bitnet:
                return BitnetConstants.BaseRewardInitial;
+
+		case GethChainType.OctaSpace:
+                if(height >= OctaSpaceConstants.TriangulumHardForkHeight)
+                    return OctaSpaceConstants.TriangulumBlockReward;
+                if(height >= OctaSpaceConstants.VegaHardForkHeight)
+                    return OctaSpaceConstants.VegaBlockReward;
+                if(height >= OctaSpaceConstants.BlackeyeHardForkHeight)
+                    return OctaSpaceConstants.BlackeyeBlockReward;
+                if(height >= OctaSpaceConstants.DneprHardForkHeight)
+                    return OctaSpaceConstants.DneprBlockReward;
+                if(height >= OctaSpaceConstants.MahasimHardForkHeight)
+                    return OctaSpaceConstants.MahasimBlockReward;
+                if(height >= OctaSpaceConstants.PolarisHardForkHeight)
+                    return OctaSpaceConstants.PolarisBlockReward;
+                if(height >= OctaSpaceConstants.SpringwaterHardForkHeight)
+                    return OctaSpaceConstants.SpringwaterBlockReward;
+                if(height >= OctaSpaceConstants.ZagamiHardForkHeight)
+                    return OctaSpaceConstants.ZagamiBlockReward;
+                if(height >= OctaSpaceConstants.OldenburgHardForkHeight)
+                    return OctaSpaceConstants.OldenburgBlockReward;
+                if(height >= OctaSpaceConstants.ArcturusHardForkHeight)
+                    return OctaSpaceConstants.ArcturusBlockReward;
+
+               return OctaSpaceConstants.BaseRewardInitial;
 
             default:
                 throw new Exception("Unable to determine block reward: Unsupported chain type");

src/Miningcore/Blockchain/Ethereum/EthereumPool.cs

@@ -4,7 +4,9 @@
 using Autofac;
 using AutoMapper;
 using Microsoft.IO;
+using Miningcore.Blockchain.Ethereum.Configuration;
 using Miningcore.Configuration;
+using Miningcore.Extensions;
 using Miningcore.JsonRpc;
 using Miningcore.Messaging;
 using Miningcore.Mining;
@@ -37,6 +39,7 @@ public EthereumPool(IComponentContext ctx,
 
     private EthereumJobManager manager;
     private EthereumCoinTemplate coin;
+	private EthereumPoolConfigExtra extraPoolConfig;
 
     #region // Protocol V2 handlers - https://github.com/nicehash/Specifications/blob/master/EthereumStratum_NiceHash_v1.0.0.txt
 
@@ -361,6 +364,7 @@ private async Task SendWork(EthereumWorkerContext context, StratumConnection con
     public override void Configure(PoolConfig pc, ClusterConfig cc)
     {
         coin = pc.Template.As<EthereumCoinTemplate>();
+		extraPoolConfig = pc.Extra.SafeExtensionDataAs<EthereumPoolConfigExtra>();
 
         base.Configure(pc, cc);
     }
@@ -483,22 +487,47 @@ protected override async Task OnRequestAsync(StratumConnection connection,
                     break;
 
                 // V1 Stratum methods
+				// There are several reports of bad actors taking advantage of the old "Ethash Stratum V1" protocol in order to perform multiple dangerous attacks like man-in-the-middle (MITM) attacks
+                // https://braiins.com/blog/hashrate-robbery-stratum-v2-fixes-this-and-more
+                // https://eips.ethereum.org/EIPS/eip-1571
+                // https://github.com/AndreaLanfranchi/EthereumStratum-2.0.0/issues/10#issuecomment-595053258
+                // Based on that critical fact, mining pool should be cautious of the risks of using a such deprecated and broken stratum protocol. Used it at your own risks.
                 case EthereumStratumMethods.SubmitLogin:
                     context.ProtocolVersion = 1;    // lock in protocol version
 
                     await OnSubmitLoginAsync(connection, tsRequest);
                     break;
 
                 case EthereumStratumMethods.GetWork:
-                    EnsureProtocolVersion(context, 1);
-
-                    await OnGetWorkAsync(connection, tsRequest);
+                    if(!extraPoolConfig.enableEthashStratumV1)
+                    {
+                        logger.Info(() => $"[{connection.ConnectionId}] Unsupported RPC request: {JsonConvert.SerializeObject(request, serializerSettings)}");
+
+                        await connection.RespondErrorAsync(StratumError.Other, $"Unsupported request {request.Method}", request.Id);
+                    }
+                    else
+                    {
+                        EnsureProtocolVersion(context, 1);
+
+                        logger.Warn(() => $"Use of Ethash Stratum V1 method: {request.Method}");
+                        await OnGetWorkAsync(connection, tsRequest);
+                    }
                     break;
 
                 case EthereumStratumMethods.SubmitWork:
-                    EnsureProtocolVersion(context, 1);
-
-                    await OnSubmitAsync(connection, tsRequest, ct, true);
+                    if(!extraPoolConfig.enableEthashStratumV1)
+                    {
+                        logger.Info(() => $"[{connection.ConnectionId}] Unsupported RPC request: {JsonConvert.SerializeObject(request, serializerSettings)}");
+
+                        await connection.RespondErrorAsync(StratumError.Other, $"Unsupported request {request.Method}", request.Id);
+                    }
+                    else
+                    {
+                        EnsureProtocolVersion(context, 1);
+
+                        logger.Warn(() => $"Use of Ethash Stratum V1 method: {request.Method}");
+                        await OnSubmitAsync(connection, tsRequest, ct, true);
+                    }
                     break;
 
                 case EthereumStratumMethods.SubmitHashrate:

src/Miningcore/Miningcore.csproj

@@ -73,7 +73,7 @@
         <PackageReference Include="NBitcoin" Version="7.0.17" />
         <PackageReference Include="NBitcoin.Altcoins" Version="3.0.17" />
         <PackageReference Include="NBitcoin.Zcash" Version="3.0.0" />
-        <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
         <PackageReference Include="NLog" Version="5.0.5" />
         <PackageReference Include="NLog.Extensions.Logging" Version="5.1.0" />
         <PackageReference Include="Polly" Version="7.2.3" />

src/Miningcore/coins.json

@@ -1359,6 +1359,66 @@
         "explorerTxLink": "https://explorer.fulminareproject.com/transaction/{0}",
         "explorerAccountLink": "https://explorer.fulminareproject.com/address/{0}"
     },
+    "clore": {
+        "name": "Clore",
+        "symbol": "CLORE",
+        "family": "progpow",
+        "progpower": "kawpow",
+        "website": "",
+        "market": "",
+        "twitter": "",
+        "telegram": "",
+        "discord": "",
+        "coinbaseHasher": {
+            "hash": "sha256d"
+        },
+        "headerHasher": {
+            "hash": "sha256d"
+        },
+        "blockHasher": {
+            "hash": "reverse",
+            "args": [
+                {
+                    "hash": "sha256d"
+                }
+            ]
+        },
+		"hasCommunityAddress": true,
+        "shareMultiplier": 1,
+        "explorerBlockLink": "https://exploreblockchain.clore.ai/block/$hash$",
+        "explorerTxLink": "https://exploreblockchain.clore.ai/tx/{0}",
+        "explorerAccountLink": "https://exploreblockchain.clore.ai/address/{0}"
+    },
+    "meowcoin": {
+        "name": "Meowcoin",
+        "symbol": "MEWC",
+        "family": "progpow",
+        "progpower": "kawpow",
+        "website": "",
+        "market": "",
+        "twitter": "",
+        "telegram": "",
+        "discord": "",
+        "coinbaseHasher": {
+            "hash": "sha256d"
+        },
+        "headerHasher": {
+            "hash": "sha256d"
+        },
+        "blockHasher": {
+            "hash": "reverse",
+            "args": [
+                {
+                    "hash": "sha256d"
+                }
+            ]
+        },
+		"hasCommunityAddress": true,
+        "shareMultiplier": 1,
+        "explorerBlockLink": "https://explorer.mewccrypto.com/block/$hash$",
+        "explorerTxLink": "https://explorer.mewccrypto.com/tx/{0}",
+        "explorerAccountLink": "https://explorer.mewccrypto.com/address/{0}"
+    },
     "garlicoin": {
         "name": "Garlicoin",
         "symbol": "GRLC",
@@ -5115,6 +5175,24 @@
         },
         "explorerTxLink": "https://btnscan.com/tx/{0}?network=Bitnet",
         "explorerAccountLink": "https://btnscan.com/address/{0}"
+    },
+	"octaspace": {
+        "name": "OctaSpace",
+        "canonicalName": "Octa.Space",
+        "symbol": "OCTA",
+        "family": "ethereum",
+        "ethasher": "ethash",
+        "website": "https://octa.space/",
+        "market": "https://coinmarketcap.com/currencies/octaspace/",
+        "twitter": "https://twitter.com/octa_space",
+        "telegram": "https://t.me/octa_space",
+        "discord": "https://discord.gg/octaspace",
+        "explorerBlockLinks": {
+            "block": "https://explorer.octa.space/block/$height$",
+            "uncle": "https://explorer.octa.space/block/$height$"
+        },
+        "explorerTxLink": "https://explorer.octa.space/tx/{0}",
+        "explorerAccountLink": "https://explorer.octa.space/address/{0}",
     },
     "ergo": {
         "name": "Ergo",