Don’t Use a Blockchain Unless You Really Need One ByMarc HochsteinPRO INVESTOR Updated: 06 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. Blockchains are inefficient, and worth the cost only when censorship-resistance is required. For money, it clearly is; for identity, it just might be.