How Cloudflare verifies the code WhatsApp Web serves to users

WhatsApp has partnered with Cloudflare to provide a system that assures users that the code run when they visit WhatsApp on the web is the code that WhatsApp intended. The new system, called Code Verify, compares a hash of the code executing in a user's browser with a hash held by Cloudflare, enabling users to easily see whether the code running is the correct version. This collaboration aims to improve privacy and security on the web and help other organizations verify the code delivered to users is the intended one.