British Telecom Awarded Patent for Blockchain Security Method ByNikhilesh DePRO INVESTOR Updated: 19 September 2021 DisclosureWe sometimes use affiliate links in our content, when clicking on those we might receive a commission – at no extra cost to you. By using this website you agree to our terms and conditions and privacy policy. The U.K.’s largest internet and telecoms provider, BT, has been awarded a patent for a method to prevent malicious attacks on blockchains.