Google is working on blockchain-related technology to support its cloud business and head off competition from emerging startups that use the heavily-hyped technology to operate online in new ways, according to people familiar with the situation. Companies use blockchain and other so-called digital ledgers to securely record transactions and process other data over the internet — a service Google could use, for example, to reassure customers that their information is protected when stored on the giant network of computer servers that power its cloud services. Les mer her