Below is an example already implemented using characteristic "facts (who, when, what)" usually recorded in a Smart Contract.
Smart Delivery Box
The Smart Delivery Box ensures secure receipt of home deliveries by combining the features of Ethereum, the access control offered by this service, alternative payment method, etc.
By recording the details of delivery on Ethereum as defined in Smart Contracts, we can prove the fact that there was a delivery with no requirements for guarantees by a third-party.
By ensuring the objective facts of delivery in this way, we expect to eliminate costly redelivery and reduce environmental problems etc.