September 22, 2026Ad PlatformNew Feature
What’s New
Marketplaces can now more easily support advertisers who use third-party providers to independently verify whether their banner ads rendered and were viewable. The new@topsort/verification JavaScript library inserts verification scripts into rendered banners after the shopper grants consent through the marketplace’s existing Consent Management Platform (CMP).
The library also handles banner re-renders, ad rotation, and cleanup when consent is withdrawn. It works with both custom banner renderers and Banners.js.
Topsort already supports carrying third-party verification tags through JSON banner templates. This release simplifies the storefront implementation.