Blockchain timestamp anomaly testing script

check_timestamps.py

import subprocess

# Set these parameters specific to the chain you are testing
oldest_block = 19522700
newest_block = 19523700
rpc_url = "https://eth.llamarpc.com"
max_seconds_diff_trigger = 12

first_timestamp = int(subprocess.run(["cast", "block", "-f", "timestamp", str(oldest_block), "--rpc-url", rpc_url], capture_output=True, text = True).stdout)

for next_block in range(oldest_block + 1, newest_block):
    next_timestamp = int(subprocess.run(["cast", "block", "-f", "timestamp", str(next_block), "--rpc-url", rpc_url], capture_output=True, text = True).stdout)
    if (timestamp_diff := next_timestamp - first_timestamp) > max_seconds_diff_trigger: # normally observe 12 seconds block spacing on mainnet Ethereum
        print("ANOMALY DETECTED! Block ", str(oldest_block), " to block ", str(next_block), " has diff of ", str(timestamp_diff))

    # step forward in time before next loop
    oldest_block = next_block
    first_timestamp = next_timestamp

    if oldest_block % 100 == 0:
        print(oldest_block) # for debugging