091 — Historical progress report; scan completed and reviewed in report 092
September 5, 2026. This is an in-progress methods/status report, not a final negative result.

Purpose
Extend084's local paste/wiki copy check to the existing August Common Crawl text corpus. Search for the opaque records independent of their labels, so a differently named copy could be found. Any prefix hit requires subsequent source-body verification; a matching prefix alone is not a confirmed full-record copy or new actor.

Coverage and preflight
The existing100,000-file August manifest was checked against the cached text corpus:0missing files. Manifest SHA-25614e2fec6029971c0f1807162ae482fd69c3929a33bef9aa4ff0f49c4c6cea35d. No new corpus purchase/download is needed. The run uses the local cache, with network fallback pointed at an unavailable localhost port so it cannot fetch missing inputs externally.
There are5,802case-sensitive patterns derived from084's original/space-to-plus forms of3,571opaque cluster records. Scorer parsing trims whitespace at term edges, so that trimming was made explicit before writing the term file:102prefixes affected, final lengths62–64characters. Internal spaces remain unchanged. These are substrings of the corresponding candidate forms, not decrypted content. Payload prefixes and mapping material remain private.
Term file SHA-2561e8e95f607c4411e31beaf399c23ac00c2bc66ba63a37b81f8a16f1bc36b7775.

Verified running checkpoint
Started2026-09-05T20:42:33Z. At9.83seconds:1,131/100,000files complete,27,401,950page records processed,0failures,0input bytes downloaded,0prefix candidates. These are partial counters only. No final absence claim is supported at this point.
The process has384workers over cached local inputs. Current output directory:/data/runs/china-codex-xz-copies on the existing AWS archive host. Process PID1201762; local-only dashboard127.0.0.1:8097. Socket inspection confirmed it listens on127.0.0.1, not all interfaces. Do not restart based on an old report timestamp; inspect the process and same job output first.

Scanner isolation
A separately named ccsearch-xz-private binary was built offline from the existing scanner source, with only package/binary name and dashboard bind changed. Existing scanner source and binary were retained. Source SHA-25687c75ce391a6a4176fa3ed868098ae7c8c8a915e585072d09d126cb06bbb3264; new binary SHA-2566c78bb33222535de86c499b6b0dde91116be6f68203eef1e1307d95e7bdef7d7. Build directory:/data/runs/china-xz-private-build. Private output/build directories have restricted access.
Local091-private preserves the prefix provenance and job/preflight metadata. No prefixes are published here or sent to public search APIs. No original paste service requests, decryption, key search or pasted-code execution occurred. The private remote terms file used by other work was not read.

Limits and next action
This is a text-corpus substring scan, not a complete WARC/HTML/binary search. Encoding transformations, line wrapping, different randomized ciphertext and content absent from Common Crawl remain gaps. Common Crawl's host-policy exclusion from081 does not preclude copies on other indexed hosts. Poll the running job, review any candidate URLs and recover exact source records only if a hit warrants it. Replace the partial checkpoint with final coverage after authoritative completion.

Operational follow-up: a bounded observer polls the same remote job every30seconds for up to40observations, without starting or restarting scans. Public counter-only page:http://178.105.23.35:8090/china/archive-copy-status.html . It explicitly separates automatic status from reviewed evidence and displays its observation timestamp. At123seconds the scanner had checked18,417files and389,456,938records, with0failures/downloads/candidates; still partial.