30 billion commercial messages are sent out in India every month, of which many are unwanted. To date, 230 million subscribers have reportedly registered for Trai’s “Do Not Disturb” registry, which came into effect in 2010, but has so far failed to crack down on telemarketers.
Blockchain can be leveraged as a digital record that tracks the “entire communication between entries involved." Even in those cases where a spammer uses a 10-digit number, telecom users can report the communication and the data can swiftly be matched using the blockchain.