find-art.py

import requests
import re

url = "https://permanent-redirect.xyz/pages/1515222320"
body = None

while body is None or "301 Permanent Redirect" in body:
    body = requests.get(url).text
    if "500 Internal Server Error" in body:
        print("Internal server error, continuing")
        body = None
        continue

    m = re.search("permanent-redirect\.xyz\/pages\/([0-9]+)", body)
    url = "https://" + m.group(0)

    m = re.findall('alt="(\d)"', body)
    counter = ''.join(m)

    print(f"Counter is {counter}, new URL is {url}")

You can use the fact that the last part of the redirect link is the unix/epoch time to get to the art as well:

https://gist.github.com/mauritsvdvijgh/25ec10c638c4f1b1ff52481ef479d756