I need assistance validating if the order of issues is right in my Block header for mining.
I’m constructing my very own miner as a problem and nonetheless wrestle with the right codecs.
The information being despatched to me from solo.ckpool.org
is:
{"end result":[[["mining.notify","71ae8ae6"]],"5324fa6e",8],"id":1,"error":null}
{"params":["64851638000ea04d","6a2be50e9bfb43f4973d1b2a84fc5fa27a11730b000209b00000000000000000","01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff3503a9d20c0004b8852666047a773e130c","0a636b706f6f6c112f736f6c6f2e636b706f6f6c2e6f72672fffffffff03c432eb1b000000001976a914c987a18977a2139835193b3df2eea097f834966888ac76dc91000000000016001451ed61d2f6aa260cc72cdf743e4e436a82c010270000000000000000266a24aa21a9ed5c2c1c347c20b2c0818daeda78f4d407f55b405e5652265bbc0b5ab948c615cb00000000",["3d14cb3882afe1cdb6121b77a1c6fe1ace1cfb4f56796875c0e5dc7475d794e5","90107e0ab73bfb0cb540cf129823a3fdd4d2df2d1cfb8a50f2ec4f10da6e4e3f","ce46e565beea4882ea532dfaecb83cc879a60c36a298ab40ec2a3c4e5ae42d65","afbead8f037a81818082f0d276e4a438a3456f0dfcce87255c349264a77ffdf1","67dcbd833c2676450e1f388da5781f902c6c4ca423a88fac6cf2a16827ebd567","7ffff8567be6efa8acd37a27b3c60bd194ca990bca74c9e71dd673d3e0c3f621","53514468979f077ace9ba497d3fa44e5091150188d29ed3dcb80a89f36662839","ff0c843842dde895d2ee8e698d35240517de66bdd839ec3f88d7c3a2b2337724","81a08847bb764ec45481a3e491640d5557fc78276091b69534af71267d1610a5","fb60c793ec790c71bb5b54e93cd8db5f134d9730754ec7c88f71862e07151d7f","bcd9c2f483e5a422e735f23610a40d07790f0ef47bea1218a4fbc1489865202c","b9a275e502fab0f76cb10e9d791a16ef18cf8addbf2ebdc92ede9a07a62dee84"],"20000000","17034219","662685b8",true],"id":null,"methodology":"mining.notify"}
The output i generate is:
Coinbase1 : 01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff3503a9d20c0004b8852666047a773e130c
Coinbase2 : 0a636b706f6f6c112f736f6c6f2e636b706f6f6c2e6f72672fffffffff03c432eb1b000000001976a914c987a18977a2139835193b3df2eea097f834966888ac76dc91000000000016001451ed61d2f6aa260cc72cdf743e4e436a82c010270000000000000000266a24aa21a9ed5c2c1c347c20b2c0818daeda78f4d407f55b405e5652265bbc0b5ab948c615cb00000000
Extranonce1 : 5324fa6e
Extranonce2 : 000000008f6bc892
Extranonce2 dimension : 8
Merkle 0 :3d14cb3882afe1cdb6121b77a1c6fe1ace1cfb4f56796875c0e5dc7475d794e5
Merkle 1 :90107e0ab73bfb0cb540cf129823a3fdd4d2df2d1cfb8a50f2ec4f10da6e4e3f
Merkle 2 :ce46e565beea4882ea532dfaecb83cc879a60c36a298ab40ec2a3c4e5ae42d65
Merkle 3 :afbead8f037a81818082f0d276e4a438a3456f0dfcce87255c349264a77ffdf1
Merkle 4 :67dcbd833c2676450e1f388da5781f902c6c4ca423a88fac6cf2a16827ebd567
Merkle 5 :7ffff8567be6efa8acd37a27b3c60bd194ca990bca74c9e71dd673d3e0c3f621
Merkle 6 :53514468979f077ace9ba497d3fa44e5091150188d29ed3dcb80a89f36662839
Merkle 7 :ff0c843842dde895d2ee8e698d35240517de66bdd839ec3f88d7c3a2b2337724
Merkle 8 :81a08847bb764ec45481a3e491640d5557fc78276091b69534af71267d1610a5
Merkle 9 :fb60c793ec790c71bb5b54e93cd8db5f134d9730754ec7c88f71862e07151d7f
Merkle 10 :bcd9c2f483e5a422e735f23610a40d07790f0ef47bea1218a4fbc1489865202c
Merkle 11 :b9a275e502fab0f76cb10e9d791a16ef18cf8addbf2ebdc92ede9a07a62dee84
Model : 536870912 / 20000000
Merklehash : bc65e13b5f7c69e9ce91adbb063d46b9be2445805e6a2498e13863708d57392c
ntime : 662685b8 / 662685b8
nbits : 17034219 / 17034219
Nonce : 00
Block prevhash : 6a2be50e9bfb43f4973d1b2a84fc5fa27a11730b000209b00000000000000000
Block Header : 000000206a2be50e9bfb43f4973d1b2a84fc5fa27a11730b000209b000000000000000002c39578d706338e198246a5e804524beb9463d06bbad91cee9697c5f3be165bcb88526661942031700000000
Block hash(reversed): 03752b55669564dccb91e47cb1d5fe421fac014e1e9fb2d563d1bd8fe44c86f2
Goal(reversed) : 0000000000000000000000000000000000000000194203000000000000000000
The pool is sending prev hash as 6a2be50e9bfb43f4973d1b2a84fc5fa27a11730b000209b00000000000000000
so some elements are already reversed (nevertheless it does not state wherever, what’s reversed and may very well be used as is).
The best way i assemble the block is as follows:
CONSTRUCTING (CONCATENATING)
- Don’t reverse Model from the pool
20000000
- Don’t reverse the prev hash (seems reversed when in comparison with https://en.bitcoin.it/wiki/Block_hashing_algorithm)
6a2be50e9bfb43f4973d1b2a84fc5fa27a11730b000209b00000000000000000
- Dhash the merkle and reverse it
- Don’t reverse ntime from the pool
662685b8
- Don’t reverse nbits from the pool
17034219
- Generate a random nonce and don’t reverse it
Append all as standard: model+prev_block_hash+merkle_hash+ntime+nbits+nonce
For readability: model+prev_block_hash+reverse(merkle_hash)+ntime+nbits+nonce
HASHING
-
After calculating the goal from nbits, reverse it to:
0000000000000000000000000000000000000000194203000000000000000000
-
After DHashing the header, reverse it to:
03752b55669564dccb91e47cb1d5fe421fac014e1e9fb2d563d1bd8fe44c86f2
COMPARE
Carry out comparability between hash and goal with
int littleEndianCompare(const unsigned char *a, const unsigned char *b, size_t byte_len)
{
for (size_t i = byte_len - 1; i < byte_len; --i)
{
if (a[i] < b[i])
return -1;
else if (a[i] > b[i])
return 1;
}
return 0;
}
Thanks upfront!