070 — REVIEWED: focused xinzhai client-fingerprint search
September5,2026. Tasks CN26N001–003 completed; no matching public uploader found in this bounded wave.

Scope
Three OpenRouter tasks, four search and three fetch allowances each, no archive allowance, nine model steps. All three returned without terminal harness errors. GitHub code search returned401; PyPI returned a client challenge. Neither counts as absent source code. Search coverage was primarily the default Google index, not a complete code or Chinese-web index.

Results reviewed
N001: searches combining paste.ubuntu.org.cn with30000/22500 surfaced incidental IRC references and generic upload documentation. The fetched pastebinit release archive describes ordinary paste support; a generic chunk-upload gist uses a different chunk size and HTTP upload scheme. No combination matching this cluster's naming, encoding and chunk boundaries was established.
N002: standard Fernet source explains URL-safe token serialization but does not supply the additional outer encoding, chunking or paste-storage client. That confirms why a generic cryptography implementation is not a client attribution. An unavailable fernet-files page remains unverified, with no demonstrated xinzhai link.
N003: exact labels re-found known Ubuntu pages; GitHub repository search re-found previously reviewed xinzhai namesakes. A root directory listing is insufficient to exclude all content, but it gives no positive link. Do not repeat these namesake listings without a new discriminator.

What remains useful
The local findings are stronger than the search results:067 uninterrupted cluster and interleaving,068 exact nested encoding/chunk reproduction,069 paired five-minute startup continuing after bulk uploads. These support a shared recurring workflow and provide specific implementation clues. This negative web pass does not weaken those local links or prove a private client.

Rejected next-step shortcuts
Some bot suggestions repeat previously unavailable GitHub code search or Baidu routes; a fresh quota alone is not a reason to retry unchanged access. Likewise, original uploader User-Agent headers are not available in our downloaded HTML/response metadata. Our fetch headers describe the investigator, not the original poster. Do not infer a sender client from them.
The private posted content is still opaque. No key searches, uploader execution, test submissions or access to private configuration were performed.

Next focused work
Use source-visible new discriminators or local lifecycle evidence: compare paired-record timing before and after the overnight gap, distinguish alternate record classes without treating ciphertext uniqueness as plaintext changes, and examine client-side version-label hypotheses. Avoid unrelated agent products, repeated generic namesakes and endless exact-label queries through the same index.