A phytosanitary treatment blockchain is generated from automatically gathered phytosanitary treatment records. The phytosanitary treatment records are generated by matching authenticated treatment data with authenticated identification data. Matching may be based on geolocation, timestamps, or both. Authentication may be based on digital signatures using private key encryption. Separate treatment sensors and identification sensors automatically gather information about a phytosanitary treatment and the item being treated. The gathered information is encrypted and transmitted to blockchain members that perform authentication, matching, and generation of the phytosanitary treatment blockchain. A tracking code may be issued for each treatment. The tracking code is used to obtain an authentication of the treatment that indicates whether the treatment passed or failed.