Topic: How to set block.nBits in Genesis block (Read 2025 times)

        // If genesis block hash does not match, then generate new genesis hash.
        if (true && block.GetHash() != hashGenesisBlock)
        {
            printf("Searching for genesis block...\n");
            // This will figure out a valid hash and Nonce if you're
            // creating a different genesis block:
            uint256 hashTarget = CBigNum().SetCompact(block.nBits).getuint256();
            uint256 thash;
            char scratchpad[SCRYPT_SCRATCHPAD_SIZE];

            loop
            {
#if defined(USE_SSE2)
                // Detection would work, but in cases where we KNOW it always has SSE2,
                // it is faster to use directly than to use a function pointer or conditional.
#if defined(_M_X64) || defined(__x86_64__) || defined(_M_AMD64) || (defined(MAC_OSX) && defined(__i386__))
                // Always SSE2: x86_64 or Intel MacOS X
                scrypt_1024_1_1_256_sp_sse2(BEGIN(block.nVersion), BEGIN(thash), scratchpad);
#else
                // Detect SSE2: 32bit x86 Linux or Windows
                scrypt_1024_1_1_256_sp(BEGIN(block.nVersion), BEGIN(thash), scratchpad);
#endif
#else
                // Generic scrypt
                scrypt_1024_1_1_256_sp_generic(BEGIN(block.nVersion), BEGIN(thash), scratchpad);
#endif
                if (thash <= hashTarget)
                    break;
                if ((block.nNonce & 0xFFF) == 0)
                {
                    printf("nonce %08X: hash = %s (target = %s)\n", block.nNonce, thash.ToString().c_str(), hashTarget.ToString().c_str());
                }
                ++block.nNonce;
                if (block.nNonce == 0)
                {
                    printf("NONCE WRAPPED, incrementing time\n");
                    ++block.nTime;
                }
            }
            printf("block.nTime = %u \n", block.nTime);
            printf("block.nNonce = %u \n", block.nNonce);
            printf("block.GetHash = %s\n", block.GetHash().ToString().c_str());
        }