Socialization and Implementation of the North Sumatra Coffee Traceability System based on GPS and Blockchain in Karo Regency, the Medan State Polytechnic Research Team conducted a Socialization and Implementation of the North Sumatra Coffee Traceability System based on GPS and Blockchain, the socialization was attended by the Karo Regency Agriculture Service, PPL (Field Agricultural Extension Workers) and coffee farmers in Karo Regency, this activity was held on Thursday, August 19, 2025 at the Sinergi Coffee Cafe.