How to Create New Genesis Block?

Question

I am trying to create a new crypto currency and i am struggling with creating genesis block with the bitcoin code. I am following this tutorial https://bitcointalk.org/index.php?topic=225690.0 and i believe the code is quite old.

I have changed the parameters and

genesis = CreateGenesisBlock(1515428732, 2018236893, 0x1d00ffff, 1, 50 * COIN);
   consensus.hashGenesisBlock = genesis.GetHash("");
   assert(consensus.hashGenesisBlock == uint256S(""));
   assert(genesis.hashMerkleRoot == uint256S(""));

but it is not compiling

chainparams.cpp:240:54: error: too many arguments to function call, expected 0, have 1
        consensus.hashGenesisBlock = genesis.GetHash("");
                                     ~~~~~~~~~~~~~~~ ^~
./primitives/block.h:63:5: note: 'GetHash' declared here
    uint256 GetHash() const;
    ^
chainparams.cpp:333:54: error: too many arguments to function call, expected 0, have 1
        consensus.hashGenesisBlock = genesis.GetHash("");
                                     ~~~~~~~~~~~~~~~ ^~
./primitives/block.h:63:5: note: 'GetHash' declared here
    uint256 GetHash() const;

I have checked the debug.log but i dont see new values for hashGenesis and Merkel root.

229tx)
2017-09-07 13:40:39 UpdateTip: new best=00000000000008838dc29dd8f585e69dc53731d6de106179c6a76b1b20c31396 height=177243 version=0x00000001 log2_work=68.044269 tx=2915938 date='2012-04-26 03:22:53' progress=0.011538 cache=210.7MiB(789124tx)
2017-09-07 13:40:39 UpdateTip: new best=0000000000000729fce8abd24f2abb7f1080f603a7d5f75794c79afec3efbadd height=177244 version=0x00000001 log2_work=68.044301 tx=2915981 date='2012-04-26 03:11:31' progress=0.011539 cache=210.7MiB(789104tx)
2017-09-07 13:40:39 UpdateTip: new best=000000000000016217c799e6d414cbd420da4a134a3b1a9b30f728b7da81d6d9 height=177245 version=0x00000001 log2_work=68.044333 tx=2916006 date='2012-04-26 03:09:07' progress=0.011539 cache=210.7MiB(789117tx)

Answer 1

genesis.GetHash("");

This is incorrect. GetHash does not take a parameter, as said in the compiler error. This should just be genesis.GetHash();.

I have checked the debug.log but i dont see new values for hashGenesis and Merkel root.

The debug.log file is only modified when you run the program, and because it isn't even compiling, when you run it, you are not running it with any of your changes.