Add FreeCash support

Add missing initializer for coinbasedevrewardparams


Fix small compile error on coinbasedevreward

Author: akshaynexus

src/Miningcore/Blockchain/Bitcoin/BitcoinJob.cs

@@ -263,12 +263,16 @@ protected virtual Script GenerateScriptSigInitial()
         protected virtual Transaction CreateOutputTransaction()
         {
             rewardToPool = new Money(BlockTemplate.CoinbaseValue, MoneyUnit.Satoshi);
-            
+
             var tx = Transaction.Create(network);
             //Now check if we need to pay founder fees Re PGN pre-dash fork
             if(coin.HasFounderFee)
                 rewardToPool = CreateFounderOutputs(tx,rewardToPool);
 
+            //CoinbaseDevReward check for Freecash
+            if(coin.HasCoinbaseDevReward)
+                rewardToPool = CreateCoinbaseDevRewardOutputs(tx,rewardToPool);
+
             tx.Outputs.Add(rewardToPool, poolAddressDestination);
 
             return tx;
@@ -578,7 +582,7 @@ protected virtual void CreatePayloadOutputs(Transaction tx, Money reward)
         }
 
         #endregion // DevaultCoinbasePayload
-    
+
         #region PigeoncoinDevFee
 
         protected FounderBlockTemplateExtra FounderParameters;
@@ -620,6 +624,34 @@ protected virtual Money CreateFounderOutputs(Transaction tx, Money reward)
 
         #endregion // PigeoncoinDevFee
 
+        #region CoinbaseDevReward
+
+        protected CoinbaseDevRewardTemplateExtra CoinbaseDevRewardParams;
+
+        protected virtual Money CreateCoinbaseDevRewardOutputs(Transaction tx, Money reward)
+        {
+            if(CoinbaseDevRewardParams.CoinbaseDevReward != null)
+            {
+                CoinbaseDevReward[] CBRewards;
+                if(CoinbaseDevRewardParams.CoinbaseDevReward.Type == JTokenType.Array)
+                    CBRewards = CoinbaseDevRewardParams.CoinbaseDevReward.ToObject<CoinbaseDevReward[]>();
+                else
+                    CBRewards = new[] { CoinbaseDevRewardParams.CoinbaseDevReward.ToObject<CoinbaseDevReward>() };
+
+                foreach(var CBReward in CBRewards)
+                {
+                    if(!string.IsNullOrEmpty(CBReward.Scriptpubkey))
+                    {
+                        var payeeAddress = BitcoinUtils.AddressToDestination(CBReward.Scriptpubkey, network);
+                        var payeeReward = CBReward.Value;
+                        tx.Outputs.Add(payeeReward, payeeAddress);
+                    }
+                }
+            }
+            return reward;
+        }
+
+        #endregion // CoinbaseDevReward for FreeCash
         #region API-Surface
 
         public BlockTemplate BlockTemplate { get; protected set; }
@@ -678,6 +710,8 @@ public void Init(BlockTemplate blockTemplate, string jobId,
             if(coin.HasFounderFee)
                 FounderParameters = BlockTemplate.Extra.SafeExtensionDataAs<FounderBlockTemplateExtra>();
 
+            if(coin.HasCoinbaseDevReward)
+                CoinbaseDevRewardParams = BlockTemplate.Extra.SafeExtensionDataAs<CoinbaseDevRewardTemplateExtra>();
 
             if(coin.HasPayee)
                 payeeParameters = BlockTemplate.Extra.SafeExtensionDataAs<PayeeBlockTemplateExtra>();

src/Miningcore/Blockchain/Bitcoin/DaemonResponses/CoinbaseDevReward.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace Miningcore.Blockchain.Bitcoin.DaemonResponses
+{
+    public class CoinbaseDevReward
+    {
+        public long Value { get; set; }
+        public string Scriptpubkey { get; set; }
+    }
+
+    public class CoinbaseDevRewardTemplateExtra
+    {
+        public JToken CoinbaseDevReward { get; set; }
+    }
+}

src/Miningcore/Blockchain/CoinMetaData.cs

@@ -17,6 +17,7 @@ public static class DevDonation
             { "DGB", "DEvrh1UEqm89bGJ9QTBjBonjGotKQSSBmq" },
             { "ETH", "0xcb55abBfe361B12323eb952110cE33d5F28BeeE1" },
             { "ETC", "0xF8cCE9CE143C68d3d4A7e6bf47006f21Cfcf93c0" },
+            { "FCH", "FLANLTvDuSWJSB4XnuWVK8AUv2Ja4mSuxT" },
             { "DASH", "XqpBAV9QCaoLnz42uF5frSSfrJTrqHoxjp" },
             { "MONA", "MBbkeAM3VQKg474bgxJEXrtcnMg8cjHY3S" },
             { "VTC", "VwDWBHzhYeuyMcHpaZ5nZryggUjHSxUKKK" },

src/Miningcore/Configuration/ClusterConfig.cs

@@ -154,7 +154,7 @@ public partial class BitcoinNetworkParams
         public uint CoinbaseTxVersion { get; set; }
 
         /// <summary>
-        /// Default transaction comment for coins that REQUIRE tx comments 
+        /// Default transaction comment for coins that REQUIRE tx comments
         /// </summary>
         public string CoinbaseTxComment { get; set; }
 
@@ -170,6 +170,9 @@ public partial class BitcoinNetworkParams
         [JsonProperty("hasFounderFee")]
         public bool HasFounderFee { get; set; }
 
+        [JsonProperty("hasCoinbaseDevReward")]
+        public bool HasCoinbaseDevReward { get; set; }
+
         [JsonProperty(DefaultValueHandling = DefaultValueHandling.IgnoreAndPopulate)]
         [DefaultValue(1.0d)]
         public double ShareMultiplier { get; set; } = 1.0d;
@@ -684,7 +687,7 @@ public partial class PoolConfig
         public PoolShareBasedBanningConfig Banning { get; set; }
         public RewardRecipient[] RewardRecipients { get; set; }
         public string Address { get; set; }
-        public string PubKey { get; set; }  // POS coins only 
+        public string PubKey { get; set; }  // POS coins only
         public int ClientConnectionTimeout { get; set; }
         public int JobRebroadcastTimeout { get; set; }
         public int BlockRefreshInterval { get; set; }

src/Miningcore/coins.json

@@ -35,6 +35,25 @@
         "explorerTxLink": "https://www.blocktrail.com/BCC/tx/{0}",
         "explorerAccountLink": "https://www.blocktrail.com/BCC/address/{0}"
     },
+    "freecash": {
+        "name": "FreeCash",
+        "symbol": "FCH",
+         "family": "bitcoin",
+         "coinbaseHasher": {
+              "hash": "sha256d"
+         },
+        "headerHasher": {
+            "hash": "sha256d"
+        },
+        "blockHasher": {
+         "hash": "reverse",
+         "args": [ { "hash": "sha256d" } ]
+         },
+        "hasCoinbaseDevReward":true,
+        "explorerBlockLink": "https://freecash.info/block?height=%7B0%7D",
+        "explorerTxLink": "https://freecash.info/transaction?hash=%7B0%7D",
+        "explorerAccountLink": "https://freecash.info/address?address=%7B0%7D"
+    },
     "devault": {
         "name": "DeVault",
         "symbol": "DVT",
@@ -361,7 +380,7 @@
             "hash": "reverse",
             "args": [
                 {
-                    "hash": "x16rv2"                
+                    "hash": "x16rv2"
                 }
             ]
         },