About

A witness, with a name on it.

Founder
Diego Luján
Signs
Every pilot shortlist
Also runs
Diego Luján Studio

Principles

Six rules Testigo does not bend.

  • Suppliers never pay

    Not to appear, not for position, not later.

  • Every check dated

    Source, edition and date on every line.

  • Every gap named

    What we could not check, and why.

  • A person signs

    No shortlist reaches a buyer on autopilot.

  • 69-B stays private

    A possible match is confirmed by a person and never shown publicly.

  • Not an audit

    Desk due diligence. A visit still matters.

Provenance

The exact files behind today’s records.

Downloaded 25 Sep 2026. Anyone can download the same files and compare fingerprints.

  • INEGI DENUE, Aguascalientesdenue_01_csv.zipsha256 3679a407c7da2657…b16a17bc
  • INEGI DENUE, Guanajuatodenue_11_csv.zipsha256 56e1755701a421b7…d91b8fcb
  • INEGI DENUE, Querétarodenue_22_csv.zipsha256 2ea1e298086f109c…c201304a
  • INEGI DENUE, San Luis Potosídenue_24_csv.zipsha256 6e611e177ab4483d…d8947269
  • SNICE IMMEX directory, Aug 2026IMMEX_DIRECTORIO.xlsxsha256 c8e4c2e822259535…ee672e3c
  • SAT 69-B list, dated 2025-12-31Listado_Completo_69-B.csvsha256 54b95d41c9ca0ea1…bbf36685