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i write part of miner for check correct work

private String generateCoinbase(String en2){
    StringBuilder coinbase = new StringBuilder();
    coinbase.append(coinb1);
    coinbase.append(Extranonce1);
    coinbase.append(en2);
    coinbase.append(coinb2);
    return coinbase.toString();
}

public String Merkle2(String cb) {
    String mr = cb;
    for(int i = 0; i < merkle_branch.length; ++i)
        mr = sha256(sha256(mr + merkle_branch[i]));
    return mr;
}

public String reverse(String string) {
    int n = string.length() / 2;
    StringBuilder sb = new StringBuilder();
    for(int i = (n - 1) * 2; n >= 0; n-=2)
        sb.append(string.substring(i, i + 1));
    return sb.toString();
}

public String reverse8(String string) {
    StringBuilder sb = new StringBuilder();
    for(int i = 0; i < string.length(); i+=8){
        int end = Math.min(i + 7, string.length() - 1);
        sb.append(reverse(string.substring(i, end)));
    }
    return sb.toString();
}

public String testControll(String nonce2, String en2) {
    String coinbase = sha256(sha256(generateCoinbase(en2)));
    String merkle = Merkle2(coinbase);
    String header = version + prevhash + reverse8(merkle) + ntime +
            nbits + nonce2 + "000000800000000000000000000000000000000000000000000000000000000000000000000000000000000080020000";
    String hash = sha256(sha256(header));
    return hash;
}

algorithm i get from here https://slushpool.com/help/#!/manual/stratum-protocol

i run this with next parameters (that i get from existing miner)

{"id": 0, "method": "mining.subscribe", "params": ["cgminer/3.7.2"]}

{"id":0,"result":[[["mining.set_difficulty","b4b6693b72a50c7116db18d6497cac52"],["mining.notify","ae6812eb4cd7735a302a8a9dd95cf71f"]],"f53d0211",4],"error":null} {"id": 1, "method": "mining.authorize", "params": ["up101084139.cgminertest", "pass"]}

{"id":1,"result":true,"error":null}

{"id":null,"params":[4],"method":"mining.set_difficulty"}

{"id":null,"params":["-4fb1d548","db48fff805d2f2be98c101b2103afcd3fc0d2f2803bf92a30000000000000000","01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff410353950604f8b0e75708","2e522cfabe6d6d3555ed13d9e4c9317fc507a9080eeef9cb14b591b0cc1636caff691168d3f24704000000000000000000000001e5129d4a000000001976a91480ad90d403581fa3bf46086a91b2d9d4125db6c188ac00000000",["7c60191525d8563e379a4049e44d77be2fecdb348eaf844c86d434a0cad8d75c","ae757ce8f99307303fd31b81b1672674523e84cebab7d4f5fc76c97c46fe6f87","6ab95b94b7970237331551e2f22097432863ee31916d9c80fa2251739d6eb20d","332eec53c5f131c6abe85d64f928151d072cae47f8477d417185b84ec2904a56","3c2f9fdbcca3f01cc8ca2f8eee445271617f10889c39d5644399865fe6dc8a1d","b06350717cd3e844ed5d605a4d7a5f25bf859beeb2bf1aab4e2bf7fa45ee5954","7a1f44163fe18591b2c50b1499b8f09f519e9cd18d1fda14be0e87a029cda741"],"20000000","18048ed4","57e7b0f8",true],"method":"mining.notify"}

{"params": ["up101084139.cgminertest", "-4fb1d548", "01000000", "57e7b0f8", "2536d114"], "id": 2, "method": "mining.submit"}

and get result of header block hash: 60be74f0d211b35bc2d23b39cb3bc79667291b439639dc20f63616a35d89b14b but it must be low than target and is not

  • what i do wrong?
  • where is my fail?
  • how do it right?

Here is online code https://docs.google.com/document/d/132mNZ1TQ4kOCg490wUw44jkCFuMd5ehzqDxLGrnwnN0/edit?usp=sharing

|improve this question

closed as off-topic by Nick ODell Oct 31 '16 at 19:57

  • This question does not appear to be about Bitcoin within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

  • Does this generate a different block header in some other mining software? – Nick ODell Oct 7 '16 at 19:42
  • it must generate code like "0000......" but somewhere i make mistake and don't know where – Oleg D Oct 13 '16 at 5:28
  • Right, but do you know that this particular nonce generates a block? – Nick ODell Oct 13 '16 at 6:34
  • i get this data from cgminer – Oleg D Oct 16 '16 at 16:30
  • i find solution, answer not need any more Question is closed – Oleg D Oct 30 '16 at 19:29