No doubt, “blockchain” is the hottest buzz word being discussed across all industries, and telecommunications is no exception. The blockchain is being proposed for use in various applications in the telecommunications industry, such as securing CDRs, billing data and access logs, ensuring data authenticity or ensuring strict operational procedures. Blockchain will certainly optimize costs by eliminating third-parties such as clearing houses, automating audits and improving fraud detection. However, there is one area where the use of blockchain technology has the potential to not only benefit the operators, but will have a revolutionary impact on the way we all understand, use and protect our identities. The Phone Number as your Digital ID Our phone number is our most valuable digital identity, and will remain the only unique international method of identification well into the future. The PSTN, which is wholly based on the use of phone numbers, is the largest social…