Blockchain proof engine Tierion has announced a series of open source tools for developers to develop LSAT-enabled applications. LSAT is an anonymous authentication token launched by Tierion and Lightning Labs engineers. LSAT can use Bitcoin Lightning Payment to implement secure and private authentication without requiring a user account or storing any user data. LSAT is an HTTP header field that encodes macaoon and the corresponding lightning invoice. Proof of payment is a basic requirement for generating a valid LSAT.