Big changes in OpenRTB spec indeed – particularly Ads.cert and how it’s builds on Ads.txt by introducing cryptographic signatures in the bid request:
“The revised OpenRTB 3.0 spec released Tuesday makes major changes to the programmatic standard to stamp out bad ads and fraud. The IAB Tech Lab’s new spec is now open for public comment for 60 days.
The eight-year-old OpenRTB standard governs how demand-side platforms (DSPs) and supply-side platforms (SSPs) communicate with each other to buy and sell programmatic ads. But bad actors exploited the standard’s holes, leading to domain spoofing, location fraud, in-banner video and other issues…” [keep reading at source]