AdTech Europe

Supply chain transparency on the SSP: ads.txt, sellers.json and schain

Buyers pay more for supply they can verify. The Programmatic SSP has supply chain transparency built in, so you do not need a separate tool.

What is included

  • ads.txt: support for the authorised-sellers file publishers place on their sites.
  • sellers.json: your sellers file, updated as you add publishers (for example "sellers.json updated with 2 new publishers" appears in the activity list).
  • Supply chain signals: sent with requests, so buyers can follow the path of the impression.
  • Quality score per source: see which sources send traffic buyers want.

Privacy settings

GDPR, COPPA and CCPA settings are part of the same trust section.

Why it matters

DSPs and networks increasingly refuse supply they cannot trace. Clean ads.txt, sellers.json and supply chain signals make your inventory eligible for more buyers. AdTech Europe itself checks ads.txt and sellers.json when reviewing supply partners and reads schain on requests.

On a white label SSP

Your company, not AdTech Europe, is the name your publishers and buyers see.

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Nov 13, 2026

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