Blockchain implementing reliability database

This invention describes a computer system that helps you determine how trustworthy external data sources are. When you request reliability information for a data source that isn't part of the blockchain, the system identifies its type and then retrieves a reliability score from a special database stored on a shared blockchain network. This score is then provided back to you. The claims specify that if the data source's category isn't found, its identity can still be used to find a score, and that the database can be a key-value store on the blockchain.