import hashlib
import time

def mine_dogecoin(block_number, transactions, previous_hash, difficulty, nonce_min, nonce_max):
    """
    Simulate Dogecoin mining by finding a hash that meets the difficulty target.
    
    Args:
    - block_number (int): The current block number.
    - transactions (str): The block's transaction data.
    - previous_hash (str): The hash of the previous block.
    - difficulty (int): The number of leading zeros required in the hash.
    - nonce_min (int): Minimum value of nonce.
    - nonce_max (int): Maximum value of nonce.
    
    Returns:
    - str: The mined hash.
    - int: The successful nonce.
    """
    target = '0' * difficulty
    print(f"Mining block with difficulty: {difficulty}, Target: {target}")
    
    for nonce in range(nonce_min, nonce_max + 1):
        block_data = f"{block_number}{transactions}{previous_hash}{nonce}"
        block_hash = hashlib.sha256(block_data.encode()).hexdigest()
        
        if block_hash.startswith(target):
            print(f"Success! Mined Hash: {block_hash}, Nonce: {nonce}")
            return block_hash, nonce
    
    print("Failed to mine within the given nonce range.")
    return None, None


# Example parameters
block_number = 1
transactions = "Alice->Bob->10DOGE;Charlie->Eve->20DOGE"
previous_hash = "0000000000000000000000000000000000000000000000000000000000000000"
difficulty = 4  # Adjust for more/less difficulty
nonce_min = 0
nonce_max = 1000000  # Simulate a range

# Start mining
start_time = time.time()
mined_hash, successful_nonce = mine_dogecoin(block_number, transactions, previous_hash, difficulty, nonce_min, nonce_max)
end_time = time.time()

if mined_hash:
    print(f"Block mined successfully in {end_time - start_time:.2f} seconds.")
    print(f"Mined Hash: {mined_hash}, Nonce: {successful_nonce}")
else:
    print("Mining failed. Try increasing the nonce range or adjusting the difficulty.")