Add StateRootEmptyTrie constant (#484)

Author: quantumagi

src/FederationSetup/GenesisMiner.cs

@@ -101,7 +101,7 @@ public static Block MineGenesisBlock(SmartContractPoAConsensusFactory consensusF
             genesis.Header.HashPrevBlock = uint256.Zero;
             genesis.UpdateMerkleRoot();
 
-            ((SmartContractPoABlockHeader)genesis.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856"); // Set StateRoot to empty trie.
+            ((SmartContractPoABlockHeader)genesis.Header).HashStateRoot = SmartContractPoABlockDefinition.StateRootEmptyTrie;
 
             // Iterate over the nonce until the proof-of-work is valid.
             // This will mean the block header hash is under the target.

src/Stratis.Bitcoin.Features.SmartContracts/PoW/SmartContractBlockDefinition.cs

@@ -24,6 +24,7 @@ namespace Stratis.Bitcoin.Features.SmartContracts.PoW
 {
     public class SmartContractBlockDefinition : BlockDefinition
     {
+        public static uint256 StateRootEmptyTrie = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856");
         private uint160 coinbaseAddress;
         private readonly ICoinView coinView;
         private readonly IContractExecutorFactory executorFactory;

src/Stratis.Sidechains.Networks/CirrusDev.cs

@@ -276,7 +276,7 @@ private Block CreateGenesis(SmartContractPoAConsensusFactory consensusFactory, u
             genesis.Header.HashPrevBlock = uint256.Zero;
             genesis.UpdateMerkleRoot();
 
-            ((SmartContractPoABlockHeader)genesis.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856");
+            ((SmartContractPoABlockHeader)genesis.Header).HashStateRoot = SmartContractPoABlockDefinition.StateRootEmptyTrie;
 
             return genesis;
         }

src/Stratis.Sidechains.Networks/CirrusNetwork.cs

@@ -49,7 +49,7 @@ public static Block CreateGenesis(SmartContractCollateralPoAConsensusFactory con
             genesis.Header.HashPrevBlock = uint256.Zero;
             genesis.UpdateMerkleRoot();
 
-            ((SmartContractPoABlockHeader)genesis.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856");
+            ((SmartContractPoABlockHeader)genesis.Header).HashStateRoot = SmartContractPoABlockDefinition.StateRootEmptyTrie;
 
             return genesis;
         }

src/Stratis.SmartContracts.Networks/SmartContractNetworkUtils.cs

@@ -1,6 +1,6 @@
 using NBitcoin;
 using NBitcoin.DataEncoders;
-using Stratis.Bitcoin.Features.SmartContracts;
+using Stratis.Bitcoin.Features.SmartContracts.PoW;
 
 namespace Stratis.SmartContracts.Networks
 {
@@ -46,7 +46,7 @@ public static NBitcoin.Block CreateGenesis(ConsensusFactory consensusFactory, ui
             genesis.Header.HashPrevBlock = uint256.Zero;
             genesis.UpdateMerkleRoot();
 
-            ((ISmartContractBlockHeader)genesis.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856");
+            ((ISmartContractBlockHeader)genesis.Header).HashStateRoot = SmartContractBlockDefinition.StateRootEmptyTrie;
 
             return genesis;
         }

src/Stratis.SmartContracts.Networks/SmartContractsPoARegTest.cs

@@ -39,7 +39,7 @@ public SmartContractsPoARegTest()
             this.GenesisReward = Money.Zero;
 
             NBitcoin.Block genesisBlock = CreatePoAGenesisBlock(consensusFactory, this.GenesisTime, this.GenesisNonce, this.GenesisBits, this.GenesisVersion, this.GenesisReward);
-            ((SmartContractPoABlockHeader)genesisBlock.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856"); // Set StateRoot to empty trie.
+            ((SmartContractPoABlockHeader)genesisBlock.Header).HashStateRoot = SmartContractPoABlockDefinition.StateRootEmptyTrie;
 
             this.Genesis = genesisBlock;
 

src/Stratis.SmartContracts.Networks/SmartContractsRegTest.cs

@@ -40,7 +40,7 @@ public SmartContractsRegTest()
             var consensusFactory = new SmartContractPowConsensusFactory();
 
             NBitcoin.Block genesisBlock = SmartContractNetworkUtils.CreateGenesis(consensusFactory, 1296688602, 2, 0x207fffff, 1, Money.Coins(50m));
-            ((ISmartContractBlockHeader)genesisBlock.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856");
+            ((ISmartContractBlockHeader)genesisBlock.Header).HashStateRoot = SmartContractBlockDefinition.StateRootEmptyTrie;
 
             this.Genesis = genesisBlock;