Humbled Drugman humbdrag
humbdrag
/ btc_submit_rpc.py
Created
January 27, 2022 21:12
Make submission of the mined block pyminer
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| submission_str = create_submission_str(block_template) | |
| # Define parameters for the RPC. | |
| parameters = { | |
| "host": "127.0.0.1", | |
| "port": "8332", | |
| "rpcuser": "Your Username", | |
| "rpcpass": "Your Password", | |
| "rpcurl": "http://127.0.0.1:8332" | |
| } |
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| def create_submission_str(block: Dict) -> str: | |
| submission = ( | |
| calc_block_header(block).hex() | |
| + get_le_var_hex(len(block['transactions'])) | |
| ) | |
| for tx in block['transactions']: | |
| submission += tx['data'] | |
| return submission |
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| block_template['merkleroot'] = calc_merkle_root( | |
| [transaction['hash'] for transaction in block_template['transactions']] | |
| ) | |
| block_template['nonce'] = 0 | |
| block_header = calc_block_header(block_template) | |
| block_hash = sha256_double_hash(block_header) | |
| block_hash < target_hash |
humbdrag
/ btc_calc_block_header.py
Created
January 27, 2022 20:55
Calculate block header for pyminer
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| def calc_block_header(block: Dict) -> bytes: | |
| return ( | |
| struct.pack("<L", block["version"]) | |
| + bytes.fromhex(block["previousblockhash"])[::-1] | |
| + bytes.fromhex(block["merkleroot"])[::-1] | |
| + struct.pack("<L", block["curtime"]) | |
| + bytes.fromhex(block["bits"])[::-1] | |
| + struct.pack("<L", block["nonce"]) | |
| ) |
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| def calc_merkle_root(transactions: List[str]) -> str: | |
| # Convert transactions into big-endian bytes. | |
| be_hashes = [ | |
| bytes.fromhex(transaction)[::-1] | |
| for transaction in transactions | |
| ] | |
| # We combine the hashes pairwise until there is only 1 left. | |
| while len(be_hashes) > 1: |
humbdrag
/ btc_coinbase_insert.py
Last active
January 27, 2022 20:59
Insert Coinbase transaction pyminer
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| from essential_generators import DocumentGenerator | |
| import hashlib | |
| def sha256_double_hash(target: str) -> str: | |
| return hashlib.sha256( | |
| hashlib.sha256(target).digest() | |
| ).digest()[::-1] | |
humbdrag
/ btc_coinbase_gen.py
Created
January 26, 2022 22:03
Create coinbase transaction for pyminer
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| def get_le_hex(value: int, width: int) -> str: | |
| return value.to_bytes(width, byteorder='little').hex() | |
| def get_le_var_hex(value: int) -> str: | |
| if value < 0xfd: | |
| return get_le_hex(value, 1) | |
| if value <= 0xffff: | |
| return "fd" + get_le_hex(value, 2) | |
| if value <= 0xffffffff: |
humbdrag
/ btc_calc_target.py
Created
January 26, 2022 20:54
Calculate target hash for bitcoin mining
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| def calc_target(bits: str) -> bytes: | |
| """ | |
| Decompress the target from a compact format. | |
| """ | |
| bits = bytes.fromhex(bits) | |
| # Extract the parts. | |
| byte_length = bits[0] - 3 | |
| significand = bits[1:] |
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| import base64 | |
| import json | |
| import random | |
| import urllib.request | |
| import urllib.error | |
| import urllib.parse | |
| # Define parameters for the RPC. | |
| parameters = { | |
| "host": "127.0.0.1", |
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| git clone [email protected]:bitcoin/bitcoin.git | |
| cd bitcoin/share/rpcauth | |
| rpcauth.py [Your Username] [Your Password] |
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