WIP: started working on genesis block.

src/chainparams.cpp

@@ -3,6 +3,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <arith_uint256.h>
 #include <chainparams.h>
 #include <consensus/merkle.h>
 
@@ -50,7 +51,7 @@ static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesi
 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
 {
     const char* pszTimestamp = "NY Times 05/Oct/2011 Steve Jobs, Apple’s Visionary, Dies at 56";
-    const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
+    const CScript genesisOutputScript = CScript() << ParseHex("049451c9ac3be691a4fa375ea69537a46ef374c1f454dbc7c2c6fe27b280f2b979991aadb29358591a1f72c326b537d7fd03e14d4978a1b57486d9e6d2c3645717") << OP_CHECKSIG;
     return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
 }
 
@@ -121,6 +122,21 @@ public:
         nPruneAfterHeight = 100000;
 
         genesis = CreateGenesisBlock(1317972665, 2084524493, 0x1e0ffff0, 1, 50 * COIN);
+
+        //JW remove the following code!
+        arith_uint256 hashTarget = arith_uint256().SetCompact(genesis.nBits);
+        uint256 hashGenesisBlock = uint256S("0x01");
+        if (true && genesis.GetHash() != hashGenesisBlock) {
+            printf("recalculating params for mainnet.\n");
+            printf("old mainnet genesis nonce: %d\n", genesis.nNonce);
+            printf("old mainnet genesis hash:  %s\n", hashGenesisBlock.ToString().c_str());
+            // deliberately empty for loop finds nonce value.
+            for(genesis.nNonce = 0; hashTarget < UintToArith256(genesis.GetHash()); genesis.nNonce++){}
+            printf("new mainnet genesis merkle root: %s\n", genesis.hashMerkleRoot.ToString().c_str());
+            printf("new mainnet genesis nonce: %d\n", genesis.nNonce);
+            printf("new mainnet genesis hash: %s\n", genesis.GetHash().ToString().c_str());
+        }
+
         consensus.hashGenesisBlock = genesis.GetHash();
         assert(consensus.hashGenesisBlock == uint256S("0x12a765e31ffd4059bada1e25190f6e98c99d9714d334efa41a195a7e7e04bfe2"));
         assert(genesis.hashMerkleRoot == uint256S("0x97ddfbbae6be97fd6cdf3e7ca13232a3afff2353e29badfab7f73011edd4ced9"));
@@ -131,6 +147,7 @@ public:
         vSeeds.emplace_back("dnsseed.litecointools.com");
         vSeeds.emplace_back("dnsseed.litecoinpool.org");
         vSeeds.emplace_back("dnsseed.koin-project.com");
+        vSeeds.clear(); //JW remove this!
 
         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,48);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
@@ -142,6 +159,7 @@ public:
         bech32_hrp = "ltc";
 
         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
+        vFixedSeeds.clear(); //JW remove this!
 
         fDefaultConsistencyChecks = false;
         fRequireStandard = true;
@@ -218,14 +236,28 @@ public:
         // By default assume that the signatures in ancestors of this block are valid.
         consensus.defaultAssumeValid = uint256S("0x1efb29c8187d5a496a33377941d1df415169c3ce5d8c05d055f25b683ec3f9a3"); //612653
 
-        pchMessageStart[0] = 0xfd;
+        pchMessageStart[0] = 0x6a;
-        pchMessageStart[1] = 0xd2;
+        pchMessageStart[1] = 0xc6;
-        pchMessageStart[2] = 0xc8;
+        pchMessageStart[2] = 0x07;
-        pchMessageStart[3] = 0xf1;
+        pchMessageStart[3] = 0x9a;
         nDefaultPort = 19335;
         nPruneAfterHeight = 1000;
 
         genesis = CreateGenesisBlock(1486949366, 293345, 0x1e0ffff0, 1, 50 * COIN);
+        //JW remove the following code!
+        arith_uint256 hashTarget = arith_uint256().SetCompact(genesis.nBits);
+        uint256 hashGenesisBlock = uint256S("0x01");
+        if (true && genesis.GetHash() != hashGenesisBlock) {
+            printf("recalculating params for mainnet.\n");
+            printf("old mainnet genesis nonce: %d\n", genesis.nNonce);
+            printf("old mainnet genesis hash:  %s\n", hashGenesisBlock.ToString().c_str());
+            // deliberately empty for loop finds nonce value.
+            for(genesis.nNonce = 0; hashTarget < UintToArith256(genesis.GetHash()); genesis.nNonce++){}
+            printf("new mainnet genesis merkle root: %s\n", genesis.hashMerkleRoot.ToString().c_str());
+            printf("new mainnet genesis nonce: %d\n", genesis.nNonce);
+            printf("new mainnet genesis hash: %s\n", genesis.GetHash().ToString().c_str());
+        }
+
         consensus.hashGenesisBlock = genesis.GetHash();
         assert(consensus.hashGenesisBlock == uint256S("0x4966625a4b2851d9fdee139e56211a0d88575f59ed816ff5e6a63deb4e3e29a0"));
         assert(genesis.hashMerkleRoot == uint256S("0x97ddfbbae6be97fd6cdf3e7ca13232a3afff2353e29badfab7f73011edd4ced9"));
@@ -236,6 +268,7 @@ public:
         vSeeds.emplace_back("testnet-seed.litecointools.com");
         vSeeds.emplace_back("seed-b.litecoin.loshan.co.uk");
         vSeeds.emplace_back("dnsseed-testnet.thrasher.io");
+        vSeeds.clear(); // JWU remove this!
 
         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
@@ -312,6 +345,20 @@ public:
         nPruneAfterHeight = 1000;
 
         genesis = CreateGenesisBlock(1296688602, 0, 0x207fffff, 1, 50 * COIN);
+        //JW remove the following code!
+        arith_uint256 hashTarget = arith_uint256().SetCompact(genesis.nBits);
+        uint256 hashGenesisBlock = uint256S("0x01");
+        if (true && genesis.GetHash() != hashGenesisBlock) {
+            printf("recalculating params for mainnet.\n");
+            printf("old mainnet genesis nonce: %d\n", genesis.nNonce);
+            printf("old mainnet genesis hash:  %s\n", hashGenesisBlock.ToString().c_str());
+            // deliberately empty for loop finds nonce value.
+            for(genesis.nNonce = 0; hashTarget < UintToArith256(genesis.GetHash()); genesis.nNonce++){}
+            printf("new mainnet genesis merkle root: %s\n", genesis.hashMerkleRoot.ToString().c_str());
+            printf("new mainnet genesis nonce: %d\n", genesis.nNonce);
+            printf("new mainnet genesis hash: %s\n", genesis.GetHash().ToString().c_str());
+        }
+        
         consensus.hashGenesisBlock = genesis.GetHash();
         assert(consensus.hashGenesisBlock == uint256S("0x530827f38f93b43ed12af0b3ad25a288dc02ed74d6d7857862df51fc56c416f9"));
         assert(genesis.hashMerkleRoot == uint256S("0x97ddfbbae6be97fd6cdf3e7ca13232a3afff2353e29badfab7f73011edd4ced9"));

src/util.cpp

@@ -583,7 +583,7 @@ fs::path GetDefaultDataDir()
     // Unix: ~/.bitcoin
 #ifdef WIN32
     // Windows
-    return GetSpecialFolderPath(CSIDL_APPDATA) / "Litecoin";
+    return GetSpecialFolderPath(CSIDL_APPDATA) / "Kevacoin";
 #else
     fs::path pathRet;
     char* pszHome = getenv("HOME");
@@ -593,10 +593,10 @@ fs::path GetDefaultDataDir()
         pathRet = fs::path(pszHome);
 #ifdef MAC_OSX
     // Mac
-    return pathRet / "Library/Application Support/Litecoin";
+    return pathRet / "Library/Application Support/Kevacoin";
 #else
     // Unix
-    return pathRet / ".litecoin";
+    return pathRet / ".kevacoin";
 #endif
 #endif
 }