Method for authenticating and anti-counterfeiting coffee machines or coffee grinders

A method for authenticating and anti-counterfeiting coffee machines or coffee grinders, comprising the steps of:

• a) providing an application residing in a mobile device connected to internet and a web server associated with the application;
• b) installing a control unit in a coffee machine or in a coffee grinder, which is associated with a database, said database being installed in the coffee machine or in the coffee grinder, and a radio frequency communication unit for communication with the mobile device and with the web server;
• c) acquiring identification data by means of the web server, which are associated with the coffee machine or the coffee grinder;
• d) generating encrypted data by means of the web server by executing a hash function of the identification data;
• e) generating a digital certificate implemented as a non-fungible token (NFT) that is uniquely associated with a public key and a private key;
• f) storing the encrypted data in a blockchain by means of unique association with the public key of the digital certificate using the private key of the digital certificate;
• g) storing the public key and the private key in the database installed in the coffee machine or in the coffee grinder;
• h) by means of the application, sending the control unit an authentication request containing a message with the public key by putting the mobile device in communication with the communication unit;
• i) in response to the authentication request, generating a signed message by means of digital signature of the message with the public key received from the application using the private key stored in the database and sending to the application, by means of the control unit, the signed message by means of the communication between the mobile device and the communication unit;
• j) receiving the signed message and sending the signed message to the web server by means of the application;
• k) sending an authentication request notification to the web server via the control unit by means of communication between the control unit and the web server when the communication unit receives the authentication request;
• l) by means of the web server, sending the blockchain the signed message received by the application after the web server identifies that the signed message and the authentication request notification both come from the coffee machine or the coffee grinder;
• and
• m) identifying the absence of counterfeiting of the coffee machine or coffee grinder based on the blockchain identifying only when the blockchain identifies that the signed message associated with the coffee machine or coffee grinder is authentic when both the public key and the private key of the digital certificate match.