Checkpoint Notifier

This script is useful for checking the validator's activity, notifying you whenever the validator signs a new checkpoint. It provides an efficient way to monitor the validator's actions, ensuring that you are promptly notified upon the signing of a new checkpoint.

import requests
import time

api_url = "https://staking-api.polygon.technology/api/v2/monitor/checkpoint-signatures/latest"

# Last checkpointNumber
last_checkpoint = None

my_validator_id = input("Enter your validator ID: ")

while True:
    try:
        # Make a request to the API
        response = requests.get(api_url)
        data = response.json()

        # Check if the response code is successful
        if response.status_code == 200 and "result" in data:
            result = data["result"]
            new_checkpoint_number = None

            for item in result:
                validator_id = item.get("validatorId")
                checkpoint_number = item.get("checkpointNumber")

                if checkpoint_number != last_checkpoint and validator_id == my_validator_id:
                    new_checkpoint_number = checkpoint_number
                    last_checkpoint = checkpoint_number

                    print(f"Validator {my_validator_id} signed a new checkpoint:", new_checkpoint_number)
                    break

            if new_checkpoint_number is None:
                print("No new checkpoints since the last check.")

        else:
            print("Request error:", response.status_code)

    except Exception as e:
        print("Error:", e)

    # Wait for some time before making the next request
    time.sleep(60)  

Python and Requests Installation:

Make sure you have Python installed on your system. Open the terminal or command prompt. Execute the following command to install the requests library:

pip install requests

Script Execution:

Save the Python script (Your_script.py) in the directory of your choice. Place a file named "addresses.txt" in the same directory as the script, containing the addresses of the validators.

Run the Script:

In the terminal or command prompt, navigate to the directory where the script is located. Execute the script using the following command:

python3 your_script.py

Results:

The script will begin monitoring the validator's activity and display messages whenever the validator signs a new checkpoint. You can stop the script at any time by pressing Ctrl + C in the terminal.