What IAB Ads.txt (Auth) requires
Compliance with the IAB Tech Lab's Ads.txt Specification Version 1.1 is a mandatory control under the Trustworthy Accountability Group's Certified Against Fraud Guidelines. The BIDDA platform enforces strict validation, requiring the file's location exclusively at the domain root path per Uniform Resource Identifier generic syntax. Secure delivery over HTTPS is mandatory, with server responses conforming to a 5000-millisecond timeout threshold, a 100-kilobyte maximum file size, and no more than five sequential redirects. Per IETF RFC 7231, the HTTP Content-Type header must be explicitly 'text/plain', and file contents must utilize UTF-8 encoding. Syntactically, each record requires a minimum of three fields and must not exceed four, while comments initiated by a hash symbol are permitted. Field-level validation enforces a strict relationship boolean, where the relationship field must contain either 'DIRECT' or 'RESELLER'; case-insensitive processing is applied to this field. These declarations are critical for programmatic verification, mapping the publisher ID against the Sellers.json specification and validating cryptographic nodes within the OpenRTB SupplyChain Object to ensure a transparent, fraud-free advertising ecosystem.
Pillar: Sales, Marketing & PR · Authority: IAB Tech Lab (Global Ad Tech) · Version: 1.1.0 · Last updated:
Primary source: https://iabtechlab.com/standards/
SHA-256 integrity: aa24786ac3e3e00d74cf413ff7a93792f00270298c5eb806cda4887e37bf1da5
Primary Citations — 6 traced to source
- IAB Tech Lab: Ads.txt (Authorized Digital Sellers) Specification Version 1.1 (August 2022)
- Trustworthy Accountability Group (TAG): Certified Against Fraud Guidelines v7.0 (Incorporating Mandatory Ads.txt)
+ 4 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.
Access
- Discovery (free): /api/v1/nodes/iab-ads-txt-authorization.json — 6-field metadata
- Vault (full node): /api/v1/vault/nodes/iab-ads-txt-authorization.json — full 13-key payload, $0.01 USDC (L402/Skyfire/Direct Base)
- Canonical URL: https://bidda.com/intelligence/iab-ads-txt-authorization
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