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1  Alternate cryptocurrencies / Service Announcements (Altcoins) / Re: [LAUNCHED] ALTBAZAAR.IO - Offering Development Service To Altcoin Community on: December 25, 2017, 07:43:43 AM
Hi,

Could you send me your best price for a new altcoin based on litecoin:

1) A brand new cryptocurrency customized for you depending on your needs.

2) Host nodes on cloud servers to ensure the health of the network.

3) Web/Android/iOS wallets with all the up-to-date best practices, such as BIP32 (HD wallet) and multi-sig support.

4) A modern blockchain explorer powerful API.

5) Both the Qt and the Electrum wallet.

All of the tools will be branded as your own products with your logo and color scheme. The code will be owned by your team and available for any future changes completely independent of the original source.


Please send to hmirheydari@gmail.com

Regards,
2  Alternate cryptocurrencies / Altcoin Discussion / Re: Development services for altcoins on: December 25, 2017, 07:36:43 AM
Hi,

Could you send me your best price for a new altcoin based on litecoin:

1) A brand new cryptocurrency customized for you depending on your needs.

2) Host nodes on cloud servers to ensure the health of the network.

3) Web/Android/iOS wallets with all the up-to-date best practices, such as BIP32 (HD wallet) and multi-sig support.

4) A modern blockchain explorer powerful API.

5) Both the Qt and the Electrum wallet.

All of the tools will be branded as your own products with your logo and color scheme. The code will be owned by your team and available for any future changes completely independent of the original source.


Please send to hmirheydari@gmail.com

Regards,
3  Alternate cryptocurrencies / Service Announcements (Altcoins) / Re: Development Service! on: December 25, 2017, 07:24:40 AM
Hi,

Could you send me your best price for a new altcoin based on litecoin:

1) A brand new cryptocurrency customized for you depending on your needs.

2) Host nodes on cloud servers to ensure the health of the network.

3) Web/Android/iOS wallets with all the up-to-date best practices, such as BIP32 (HD wallet) and multi-sig support.

4) A modern blockchain explorer powerful API.

5) Both the Qt and the Electrum wallet.

All of the tools will be branded as your own products with your logo and color scheme. The code will be owned by your team and available for any future changes completely independent of the original source.


Please send to hmirheydari@gmail.com

Regards,
4  Alternate cryptocurrencies / Service Discussion (Altcoins) / Re: Dark Developer – AltCoin Development Now Easy – FREE WEBSITE – 50% OFF on: December 25, 2017, 05:59:22 AM
May be this is just an oversight, you only include 50% discount without mentioning the actual prices of each coin version.

Please update you thread with the prices of your services.

Hi,

Could you send all your altcoin development services plus price to my email hmirheydari@gmail.com

Regards,
5  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: CryptoCoins Development Service on: December 25, 2017, 05:47:18 AM
Hi,

Please send me the price of all of your services in US$ to hmirheydari@gmail.com

Regards,
Stonica
6  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: Altcoin development work for cheap. on: December 24, 2017, 06:47:41 PM
Hi,

I appreciate if you answer the question asked at:

https://stackoverflow.com/questions/47828172/encountering-readblockfromdisk-errors-in-block-header-at-cblockdiskposnfile-0

I am sure you have encountered such problem.

Also could you quote me on full package of an altcoin based on litecoin?
7  Alternate cryptocurrencies / Service Announcements (Altcoins) / Re: The Altcoin Guys - Affordable & High Quality Coin Development - 50% OFF ! on: December 24, 2017, 06:39:30 PM
Hi,

I am to order full package but first must test your works

Regards,
Hossein Mirheydari
8  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: Altcoin development services on: December 24, 2017, 06:33:29 PM
Hi,

Could you send me pricing in detail?
9  Alternate cryptocurrencies / Altcoin Discussion / Error while forking bitcoin(2017) code on: December 24, 2017, 06:05:18 PM
 Hi,

First: I am a newbite to altcoin development, next to generate an altcoin from litecoin,

1- I have made a clone of litecoin using git clone https://githubcom/litecoin-project/lotecoin.git

2- I changed some of chain and coin parameters in chainparams.cpp as below:

Code:

// Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2015 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.

 #include "chainparams.h"
 #include "consensus/merkle.h"

 #include "tinyformat.h"
 #include "util.h"
 #include "utilstrencodings.h"

 #include <assert.h>

 #include "chainparamsseeds.h"
 #include "arith_uint256.h"

 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
 {
     CMutableTransaction txNew;
     txNew.nVersion = 1;
     txNew.vin.resize(1);
     txNew.vout.resize(1);
     txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
     txNew.vout[0].nValue = genesisReward;
     txNew.vout[0].scriptPubKey = genesisOutputScript;

     CBlock genesis;
     genesis.nTime    = nTime;
     genesis.nBits    = nBits;
     genesis.nNonce   = nNonce;
     genesis.nVersion = nVersion;
     genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
     genesis.hashPrevBlock.SetNull();
     genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
     return genesis;
 }

 /**
  * Build the genesis block. Note that the output of its generation
  * transaction cannot be spent since it did not originally exist in the
  * database.
  *
  * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, *nNonce=2083236893, vtx=1)
  *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
  *     CTxIn(COutPoint(000000, -1), coinbase *04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420**666f722062616e6b73)
  *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
  *   vMerkleTree: 4a5e1e
  */

 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
 {
     const char* pszTimestamp = "Tehran Times, Stonica wins finally";
     const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
     return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
 }

 void CChainParams::UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
 {
     consensus.vDeployments[d].nStartTime = nStartTime;
     consensus.vDeployments[d].nTimeout = nTimeout;
 }

 /**
  * Main network
  */
 /**
  * What makes a good checkpoint block?
  * + Is surrounded by blocks with reasonable timestamps
  *   (no blocks before with a timestamp after, none after with
  *    timestamp before)
  * + Contains no strange transactions
  */

 class CMainParams : public CChainParams {
 public:
     CMainParams() {
         strNetworkID = "main";
         consensus.nSubsidyHalvingInterval = 840000;
         consensus.BIP34Height = 710000;
         consensus.BIP34Hash = uint256S("00000000b2c50d03d4d0bdd38681775ce522f137518145d6b3c913b7dd4423e5");
         consensus.BIP65Height = 918684; // bab3041e8977e0dc3eeff63fe707b92bde1dd449d8efafb248c27c8264cc311a
         consensus.BIP66Height = 811879; // 7aceee012833fa8952f8835d8b1b3ae233cd6ab08fdb27a771d2bd7bdc491894
         consensus.powLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.nPowTargetTimespan = 3.5 * 24 * 60 * 60; // 3.5 days
         consensus.nPowTargetSpacing = 2.5 * 60;
         consensus.fPowAllowMinDifficultyBlocks = false;
         consensus.fPowNoRetargeting = false;
         consensus.nRuleChangeActivationThreshold = 6048; // 75% of 8064
         consensus.nMinerConfirmationWindow = 8064; // nPowTargetTimespan / nPowTargetSpacing * 4
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008

         // Deployment of BIP68, BIP112, and BIP113.
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1485561600; // January 28, 2017
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1517356801; // January 31st, 2018

         // Deployment of SegWit (BIP141, BIP143, and BIP147)
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1485561600; // January 28, 2017
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1517356801; // January 31st, 2018

         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000000ba50a60f8b56c7fe0");

         // By default assume that the signatures in ancestors of this block are valid.
         consensus.defaultAssumeValid = uint256S("0x29c8c00e1a5f446a6364a29633d3f1ee16428d87c8d3851a1c570be8170b04c2"); //1259849

         /**
          * The message start string is designed to be unlikely to occur in normal data.
          * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
          * a large 32-bit integer with any alignment.
          */
         pchMessageStart[0] = 0x0b;
         pchMessageStart[1] = 0xd0;
         pchMessageStart[2] = 0xb6;
         pchMessageStart[3] = 0xdb;
         nDefaultPort = 9335;
         nPruneAfterHeight = 100000;
 //static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
         genesis = CreateGenesisBlock(1511279793, 1251189192, 0x1d00ffff , 1, 50 * COIN);
         consensus.hashGenesisBlock = genesis.GetHash();

 /*        
         // calculate Genesis Block
         // Reset genesis
         consensus.hashGenesisBlock = uint256S("0x");
         std::cout << std::string("Begin calculating Mainnet Genesis Block:\n");
         if (true && (genesis.GetHash() != consensus.hashGenesisBlock)) {
             LogPrintf("Calculating Mainnet Genesis Block:\n");
             arith_uint256 hashTarget = arith_uint256().SetCompact(genesis.nBits);
             uint256 hash;
             genesis.nNonce = 0;
             // This will figure out a valid hash and Nonce if you're
             // creating a different genesis block:
             // uint256 hashTarget = CBigNum().SetCompact(genesis.nBits).getuint256();
             // hashTarget.SetCompact(genesis.nBits, &fNegative, &fOverflow).getuint256();
             // while (genesis.GetHash() > hashTarget)
             while (UintToArith256(genesis.GetHash()) > hashTarget)
             {
                 ++genesis.nNonce;
                 if (genesis.nNonce == 0)
                 {
                     LogPrintf("NONCE WRAPPED, incrementing time");
                     std::cout << std::string("NONCE WRAPPED, incrementing time:\n");
                     ++genesis.nTime;
                 }
                 if (genesis.nNonce % 10000 == 0)
                 {
                     LogPrintf("Mainnet: nonce %08u: hash = %s \n", genesis.nNonce, genesis.GetHash().ToString().c_str());
                     // std::cout << strNetworkID << " nonce: " << genesis.nNonce << " time: " << genesis.nTime << " hash: " << genesis.GetHash().ToString().c_str() << "\n";
                 }
             }
             std::cout << "Mainnet ---\n";
             std::cout << "  nonce: " << genesis.nNonce <<  "\n";
             std::cout << "   time: " << genesis.nTime << "\n";
             std::cout << "   hash: " << genesis.GetHash().ToString().c_str() << "\n";
             std::cout << "   merklehash: "  << genesis.hashMerkleRoot.ToString().c_str() << "\n";
             // Mainnet --- nonce: 296277 time: 1390095618 hash: 000000bdd771b14e5a031806292305e563956ce2584278de414d9965f6ab54b0
         }
         std::cout << std::string("Finished calculating Mainnet Genesis Block:\n");


 */





 //printf("%s\n",consensus.hashGenesisBlock.Tostring().c_str());
  std::cout << std::string("ENTER:\n");
        assert(consensus.hashGenesisBlock == uint256S("0x00000000b2c50d03d4d0bdd38681775ce522f137518145d6b3c913b7dd4423e5"));
         assert(genesis.hashMerkleRoot == uint256S("0xf8621e34b0dcd43361fe589702e06aa79992229bfbca57d058d8561635c30fbe"));
     std::cout << std::string("PASSED:\n");

         printf("min nBit:  %08x\n", consensus.powLimit);

         // Note that of those with the service bits flag, most only support a subset of possible options
         //vSeeds.emplace_back("seed-a.stonicacoin.loshan.co.uk", true);
         //vSeeds.emplace_back("dnsseed.thrasher.io", true);
         //vSeeds.emplace_back("dnsseed.stonicacointools.com", true);
         //vSeeds.emplace_back("dnsseed.stonicacoinpool.org", true);
         //vSeeds.emplace_back("dnsseed.koin-project.com", false);

         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,127);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,65);
         base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,56);
         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,176);
         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};

         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));

         fDefaultConsistencyChecks = false;
         fRequireStandard = true;
         fMineBlocksOnDemand = false;

         checkpointData = (CCheckpointData) {
             {
                 {  0, uint256S("0x00000000b2c50d03d4d0bdd38681775ce522f137518145d6b3c913b7dd4423e5")},

             }
         };

         chainTxData = ChainTxData{
             // Data as of block db42d00d824950a125f9b08b6b6c282c484781562fa8b3bd29d6ce4a2627c348 (height 1259851).
             1502955334, // * UNIX timestamp of last known number of transactions
             1,  // * total number of transactions between genesis and that timestamp
                     //   (the tx=... number in the SetBestChain debug.log lines)
             0.00     // * estimated number of transactions per second after that timestamp
         };
     }
 };

 /**
  * Testnet (v3)
  */
 class CTestNetParams : public CChainParams {
 public:
     CTestNetParams() {
         strNetworkID = "test";
         consensus.nSubsidyHalvingInterval = 840000;
         consensus.BIP34Height = 76;
         consensus.BIP34Hash = uint256S("8075c771ed8b495ffd943980a95f702ab34fce3c8c54e379548bda33cc8c0573");
         consensus.BIP65Height = 76; // 8075c771ed8b495ffd943980a95f702ab34fce3c8c54e379548bda33cc8c0573
         consensus.BIP66Height = 76; // 8075c771ed8b495ffd943980a95f702ab34fce3c8c54e379548bda33cc8c0573
         consensus.powLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.nPowTargetTimespan = 3.5 * 24 * 60 * 60; // 3.5 days
         consensus.nPowTargetSpacing = 2.5 * 60;
         consensus.fPowAllowMinDifficultyBlocks = true;
         consensus.fPowNoRetargeting = false;
         consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008

         // Deployment of BIP68, BIP112, and BIP113.
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1483228800; // January 1, 2017
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1517356801; // January 31st, 2018

         // Deployment of SegWit (BIP141, BIP143, and BIP147)
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1483228800; // January 1, 2017
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1517356801; // January 31st, 2018

         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000364b0cbc3568");

         // By default assume that the signatures in ancestors of this block are valid.
         consensus.defaultAssumeValid = uint256S("0xad8ff6c2f5580d2b50bd881e11312425ea84fa99f322bf132beb722f97971bba"); //153490

         pchMessageStart[0] = 0xfd;
         pchMessageStart[1] = 0xd2;
         pchMessageStart[2] = 0xc8;
         pchMessageStart[3] = 0xf1;
         nDefaultPort = 19335;
         nPruneAfterHeight = 1000;

         genesis = CreateGenesisBlock(1511279793, 0, 0x1d00ffff , 1, 50 * COIN);
         consensus.hashGenesisBlock = genesis.GetHash();
         //assert(consensus.hashGenesisBlock == uint256S("0x"));
         //assert(genesis.hashMerkleRoot == uint256S("0x"));

         vFixedSeeds.clear();
         vSeeds.clear();
         // nodes with support for servicebits filtering should be at the top
         //vSeeds.emplace_back("testnet-seed.stonicacointools.com", true);
         //vSeeds.emplace_back("seed-b.stonicacoin.loshan.co.uk", true);
         //vSeeds.emplace_back("dnsseed-testnet.thrasher.io", true);

         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
         base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,58);
         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};

         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));

         fDefaultConsistencyChecks = false;
         fRequireStandard = false;
         fMineBlocksOnDemand = false;

         checkpointData = (CCheckpointData) {
             {
                 {0, uint256S("")},
             }
         };

         chainTxData = ChainTxData{
             // Data as of block 3351b6229da00b47ad7a8d7e1323b0e2874744b5296e3d6448293463ab758624 (height 153489)
             //1502953751,
             //382986,
             //0.01
         };

     }
 };

 /**
  * Regression test
  */
 class CRegTestParams : public CChainParams {
 public:
     CRegTestParams() {
         strNetworkID = "regtest";
         consensus.nSubsidyHalvingInterval = 150;
         consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
         consensus.BIP34Hash = uint256();
         consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
         consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.nPowTargetTimespan = 3.5 * 24 * 60 * 60; // two weeks
         consensus.nPowTargetSpacing = 2.5 * 60;
         consensus.fPowAllowMinDifficultyBlocks = true;
         consensus.fPowNoRetargeting = true;
         consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
         consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;

         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S("0x00");

         // By default assume that the signatures in ancestors of this block are valid.
         consensus.defaultAssumeValid = uint256S("0x00");

         pchMessageStart[0] = 0xfa;
         pchMessageStart[1] = 0xbf;
         pchMessageStart[2] = 0xb5;
         pchMessageStart[3] = 0xda;
         nDefaultPort = 19444;
         nPruneAfterHeight = 1000;

         genesis = CreateGenesisBlock(1511279793, 0, 0x1d00ffff , 1, 50 * COIN);
         consensus.hashGenesisBlock = genesis.GetHash();
         assert(consensus.hashGenesisBlock == uint256S("0x9"));
         assert(genesis.hashMerkleRoot == uint256S("0x"));

         vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
         vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.

         fDefaultConsistencyChecks = true;
         fRequireStandard = false;
         fMineBlocksOnDemand = true;

         checkpointData = (CCheckpointData) {
             {
                 {0, uint256S("530827f38f93b43ed12af0b3ad25a288dc02ed74d6d7857862df51fc56c416f9")},
             }
         };

         chainTxData = ChainTxData{
             0,
             0,
             0
         };

         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
         base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,58);
         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
     }
 };

 static std::unique_ptr<CChainParams> globalChainParams;

 const CChainParams &Params() {
     assert(globalChainParams);
     return *globalChainParams;
 }

 std::unique_ptr<CChainParams> CreateChainParams(const std::string& chain)
 {
     if (chain == CBaseChainParams::MAIN)
         return std::unique_ptr<CChainParams>(new CMainParams());
     else if (chain == CBaseChainParams::TESTNET)
         return std::unique_ptr<CChainParams>(new CTestNetParams());
     else if (chain == CBaseChainParams::REGTEST)
         return std::unique_ptr<CChainParams>(new CRegTestParams());
     throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 }

 void SelectParams(const std::string& network)
 {
     SelectBaseParams(network);
     globalChainParams = CreateChainParams(network);
 }

 void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
 {
     globalChainParams->UpdateVersionBitsParameters(d, nStartTime, nTimeout);
 }


As you may know the bitcoin developers has omitted the genesis block mining code from source code published in github, but I fortunately found some piece of code in related blogs and it worked, then I have calculated the new Genesis hash, Merkelroot hash and Nonce and put into code as you can see above. The code was compiled correctly and I have not received Assertion failed message for Genesis block but I received another error which you can see in debug.log as below:

Code:

2017-12-15 07:31:33



















 2017-12-15 07:31:33 Stonicacoin version v0.15.0.1-gba8ed3a93be
 2017-12-15 07:31:33 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1
 2017-12-15 07:31:33 Assuming ancestors of block 29c8c00e1a5f446a6364a29633d3f1ee16428d87c8d3851a1c570be8170b04c2 have valid signatures.
 2017-12-15 07:31:33 Using the 'standard' SHA256 implementation
 2017-12-15 07:31:33 Using RdRand as an additional entropy source
 2017-12-15 07:31:33 Default data directory /home/kevin/.stonicacoin
 2017-12-15 07:31:33 Using data directory /home/kevin/.stonicacoin
 2017-12-15 07:31:33 Using config file /home/kevin/.stonicacoin/stonicacoin.conf
 2017-12-15 07:31:33 Using at most 125 automatic connections (1024 file descriptors available)
 2017-12-15 07:31:33 Using 16 MiB out of 32/2 requested for signature cache, able to store 524288 elements
 2017-12-15 07:31:33 Using 16 MiB out of 32/2 requested for script execution cache, able to store 524288 elements
 2017-12-15 07:31:33 Using 8 threads for script verification
 2017-12-15 07:31:33 scheduler thread start
 2017-12-15 07:31:33 HTTP: creating work queue of depth 16
 2017-12-15 07:31:33 No rpcpassword set - using random cookie authentication
 2017-12-15 07:31:33 Generated RPC authentication cookie /home/kevin/.stonicacoin/.cookie
 2017-12-15 07:31:33 HTTP: starting 4 worker threads
 2017-12-15 07:31:33 Cache configuration:
 2017-12-15 07:31:33 * Using 2.0MiB for block index database
 2017-12-15 07:31:33 * Using 8.0MiB for chain state database
 2017-12-15 07:31:33 * Using 440.0MiB for in-memory UTXO set (plus up to 4.8MiB of unused mempool space)
 2017-12-15 07:31:33 init message: Loading block index...
 2017-12-15 07:31:33 Opening LevelDB in /home/kevin/.stonicacoin/blocks/index
 2017-12-15 07:31:33 Opened LevelDB successfully
 2017-12-15 07:31:33 Using obfuscation key for /home/kevin/.stonicacoin/blocks/index: 0000000000000000
 2017-12-15 07:31:33 LoadBlockIndexDB: last block file = 0
 2017-12-15 07:31:33 LoadBlockIndexDB: last block file info: CBlockFileInfo(blocks=0, size=0, heights=0...0, time=1970-01-01...1970-01-01)
 2017-12-15 07:31:33 Checking all blk files are present...
 2017-12-15 07:31:33 LoadBlockIndexDB: transaction index disabled
 2017-12-15 07:31:33 Initializing databases...
 2017-12-15 07:31:33 Pre-allocating up to position 0x1000000 in blk00000.dat
 2017-12-15 07:31:33 Opening LevelDB in /home/kevin/.stonicacoin/chainstate
 2017-12-15 07:31:33 Opened LevelDB successfully
 2017-12-15 07:31:33 Wrote new obfuscate key for /home/kevin/.stonicacoin/chainstate: 77f259e28117a4e1
 2017-12-15 07:31:33 Using obfuscation key for /home/kevin/.stonicacoin/chainstate: 77f259e28117a4e1
 2017-12-15 07:31:33 init message: Rewinding blocks...
 2017-12-15 07:31:33  block index              11ms
 2017-12-15 07:31:33 No wallet support compiled in!
 2017-12-15 07:31:33 ERROR: ReadBlockFromDisk: Errors in block header at CBlockDiskPos(nFile=0, nPos=8)
 2017-12-15 07:31:33 *** Failed to read block
 2017-12-15 07:31:33 Error: Error: A fatal internal error occurred, see debug.log for details


I found that this error(eg. ERROR: ReadBlockFromDisk: Errors in block header at CBlockDiskPos(nFile=0, nPos=8) ) occur in CheckProofOfWork function which is in pow.cpp, Any recommendation is appreciated.
10  Alternate cryptocurrencies / Altcoin Discussion / How to create Gnesisblock hash and Merkelroot hash for new coin which is cloned? on: November 17, 2017, 07:28:24 PM
I have cloned Litecoin and change all parameters like pchMessage, ntime, Timestamp and some other parameters, but I have not found where can I remove the current Genesisblock has and Merkelroot hash.
Also I don't know know how to recalculate them .
Note: I use the latest version you can find on https://github.com/litecoin/litecoin.


RTegards,
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