Sam Altman's verification startup, Tools for Humanity, has launched Concert Kit to combat ticket scalping by reserving inventory exclusively for World ID holders. The new feature allows artists like Bruno Mars, 30 Seconds to Mars, and Anderson.Paak to designate specific ticket pools for fans who have completed biometric verification. The company also announced partnerships with Tinder, Zoom, and DocuSign to integrate biometric proof-of-human signatures into dating profiles, video calls, and digital enterprise contracts. The World ID 4.0 protocol introduces tiered authentication levels, ranging from basic selfie checks to high-security iris scans. The project is also expanding its credential ecosystem to include more than 150 million credential uses.