The inclusion of txt suggests a specific operational security (OpSec) measure used by distributors. Instead of hosting images directly on a searchable page, distributors often host .txt files containing scrambled links or base64 encoded strings. This forces the user to "work" to access the content, reducing the efficiency of automated web crawlers and law enforcement bots.

response = requests.get(url, proxies=proxies, stream=True, timeout=30)

:

: A specific username or handle associated with content uploads or a digital identity.