Here is an article on how to create a Python script that listens to Bitcoin network transactions and monitors addresses stored in a MySQL database:
Ethereum: Starting Point for Listening to Bitcoin Network Transactions in Python
Bitcoin, the second-largest cryptocurrency by market cap, uses a decentralized network of nodes to validate and record transactions. In this article, we will explore how to create a Python script that listens to the Bitcoin network and monitors addresses stored in a MySQL database.
Prerequisites
- You have a basic knowledge of Python and MySQL.
- You have a Bitcoin node (e.g. Bitcoin Core) installed on your computer.
- You have created a MySQL database and populated it with Bitcoin transaction data.
Step 1: Install required libraries
Before we begin, you need to install the following libraries:
mysql-connector-pythonfor interacting with MySQL databases
py bitcoin-corefor working with Bitcoin transactions (Note: this is not a complete Bitcoin node implementation)
You can install these libraries using pip:
pip install mysql-connector-python pybitcoincore
Step 2: Create a Python script
Create a new Python file, e.g. B. bitcoin_listener.py and add the following code:
“`python
import mysql.connector
import json
MySQL database connection settings
DB_HOST = ‘localhost’
DB_USER = ‘your_username’
DB_PASSWORD = ‘your_password’
DB_NAME = ‘bitcoin_transactions’
Bitcoin node connection settings
BITCOIN_NODE_URL = ‘
BITCOIN_NODE_SECRET = ‘your_secret_key’
This should not be shared publicly
def connect_to_mysql():
“””Establish MySQL database connection”””
return mysql.connector.connect(
host=DB_HOST,
user=DB_USER,
password=DB_PASSWORD,
database=DB_NAME
)
def get_bitcoin_transactions():
“””Get bitcoin transactions from node”””
Send P2P request to bitcoin node
response = requests.get(BITCOIN_NODE_URL)
data = json.loads(response.text)
Extract transaction addresses and amounts
transactions = []
for item in data[‘transactions’]:
address = item[‘from’]
amount = item[‘value’]
transaction.append({
‘address’: address,
‘amount’: amount
})
return transactions
def main():
“””Listen to Bitcoin network transactions”””
Establish MySQL database connection
db_connection = connect_to_mysql()
Fetch Bitcoin transactions from node
transaction = get_bitcoin_transactions()
Loop through transactions and monitor addresses in MySQL database
for transaction in transaction:
address = transaction[‘address’]
amount = transaction[‘amount’]
Check if address exists in MySQL database
cursor = db_connection.cursor()
query = “SELECT * FROM bitcoin_transactions WHERE address=%s AND timestamp>=%s”
cursor.execute(query, (address, datetime.now()))
result = cursor.fetchone()
If address is found, update its amount and timestamp in database
If Result:
new_amount = transaction[‘amount’] + 10
Simulate a transaction with an increase of 10 units
query = “UPDATE bitcoin_transactions SET amount=%s, timestamp=NOW() WHERE address=%s”
cursor.execute(query, (new_amount, address))
Print the results to the console
print(f”address: {address} | amount: {amount} | timestamp: {datetime.now()}”)
Close the MySQL database connection
db_connection.