What is the name of Telegram's encrypted identity verification system?

Telegram’s encrypted identity verification system is called Telegram Passport.

Telegram Passport was designed as a unified authorization method for services that need real-world identification. Instead of repeatedly uploading a passport, identity card, address document, or other personal information, a user can store the data once and share selected details with a participating service.

The system uses end-to-end encryption for Passport data. Telegram’s clients encrypt the information before it is uploaded, and the service requesting the information receives data encrypted for its own public key. Telegram’s servers function as encrypted storage and are not supposed to be able to read the Passport contents.

Telegram Passport is not the same as Telegram’s ordinary login or phone-number verification. It is an identity-document sharing system for external services, such as financial platforms. Users must still decide what information to share, and the receiving service—not Telegram—remains responsible for checking the documents and using the identity data.