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# Ads.cert
- URL: https://www.adlingo.org/glossary/ads-cert/
- Published: 2025-01-15T12:12:00.000Z
- Updated: 2025-01-15T12:12:00.000Z
- Description: A cryptographic security specification that enables authentication of bid request information throughout the supply chain.
- Author: Travis Lusk
- Tags: Programmatic, #glossary, #Import 2026-10-27 17:05

A tamper-evident seal on the bid request. If someone modifies the inventory data in transit, the cryptographic signature breaks and you know it. The theory is solid. Adoption is the problem. Ads.cert works when everyone in the chain implements it, and not everyone has.