076 — Ubuntu alternate hostname: matching xinzhai/xz content
Reviewed September 5, 2026.

A single public read-only request to https://paste.ubuntu.com.cn/4549139 returned HTTP 200 without a redirect at 19:53:33 UTC. Its complete authored body, including whitespace, exactly matches the previously saved https://paste.ubuntu.org.cn/4549139: 864 characters, SHA-256 5dd660595fa3b41f0eb9682a3b0cd2545eccc3e7231a969f7a41ea6dba9edf2c.

Both pages identify the record as xz_improvement_plan_p1, language python, displayed 2026-07-12 23:15. Both have the title Ubuntu Paste and navigation links to paste.ubuntu.org.cn and other ubuntu.org.cn services. Neither declares an HTML canonical link. This is consistent with an alternate hostname, shared service or mirror. One matching response does not establish the exact backend relationship, but this must not be counted as an independent second posting or operator.

Public Ubuntu IRC archives contain ordinary historical uses of both hostnames, including https://irclogs.ubuntu.com/2011/06/18/%23ubuntu-cn.html. This supports treating both spellings as search candidates. It does not independently date the 2026 xinzhai cluster or establish historical backend identity.

The alternate hostname creates a distinct archive-index coverage question: an archive may index one spelling even when another spelling has no relevant captures. Previous negative org.cn archive results do not answer that question.

Private provenance: 076-private/response.html and metadata.json. Raw response SHA-256 7215f188681bd814daf4656c4b948c3f781b851b7ec941a1144f4cca69ac9d6e. Shared CDN DNS addresses are not evidence of operator location or identity. No original payload is included here.