JustCrypto/tests/mine.py

from random import randint, random
from xxhash import xxh32

# Generate fast hash
def sha(text):
    text = str(text)
    return xxh32(text).hexdigest()

# Check if hashes match
def check(new_hash, zeros):
    if new_hash.startswith('0'*zeros):
        return True
    else:
        return False

pblock = {
  "ph": "5bb98b81",
  "nonce": 1,
  "ts": "Some transaction data"
}

# Block
ph = sha(pblock)
block = {
  "ph": ph,
  "nonce": 1,
  "ts": "Some transaction data"
}


from time import time
start_time = time()

zeros = 4
MAX_NONCE = 10**10

while True:
    text = block["ph"] + str(block["nonce"]) + block["ts"]
    
    if check(sha(text), zeros):
        print("NONCE: ", block["nonce"])
        print("Hash: ", sha(text))
        break

    block["nonce"] = randint(1, MAX_NONCE)

print("--- %s seconds ---" % (time() - start_time))