Parmigiano-Reggiano makers are putting edible microchips the size of a grain of sand into their 90-pound cheese wheels to combat counterfeiters::Italian Parmigiano-Reggiano makers are using microchips to verify the authenticity of their products and thwart scammers.
Blockchain is also good for solving the Ship of Theseus problem. You can encode the entire history of the object into the object.
Blockchain has many cool uses and none of them are currency.