Source status

The latest successful sponsor-register build, its official source file, validation counts and tamper-evident receipt.

GOV.UK remains authoritative. This page shows whether KnowYourSponsor can account for its own latest mirror build. It is not a certificate issued by the Home Office.

Latest source integrity receipt

This receipt identifies the exact official CSV used for this release and records the transformation versions and counts needed to investigate a discrepancy. It proves reproducibility of our mirror, not that our mirror outranks the official register.

Verified pipeline run KYS-20261109T192811Z Retrieved 2026-11-09 19:28 UTC; source published 2026-11-09 09:02 UTC.

Official source file: 10,939,418 bytes Open the GOV.UK CSV · SHA-256 6f104221f4e2b9cb…
Input validation: 143,000 valid rows 0 malformed; 0 blank-name; 406 exact duplicates.
Published register: 127,690 records 127,414 distinct sponsor names.
Transformation: sponsor-register-parser/1 sponsor-register-normalizer/1; guard override: no.

Verification hashes

Source SHA-256
6f104221f4e2b9cb7626fa125efd40ab34e3894c7458fe30ad42a5b72e777a40

Run manifest SHA-256
7fb192d48c05ec35a86587e919dbf3e892d4503649275c4d605b281d3e6a99dd

Previous manifest SHA-256
0964c40e450292c0cf80f8448de448eff953646656b2b5cee6e3915c85268ff1

The machine-readable latest receipt is available as source_status.json. 34 append-only run receipt(s) are retained.

How to use this page

Compare the source publication and retrieval times to understand freshness.
Use the source SHA-256 to identify the exact downloaded bytes.
Use the manifest hashes to detect a changed or missing run receipt.
If this page is stale or incomplete, check the official register directly.

Last updated 09 November 2026.