China has launched a blockchain - enabled platform to supervise ex - prisoners and those on parole and probation , and introduce a credit evaluation system for them by the end of the year . Ex - offenders in Guangzhou 's Chancheng district will wear smart ##phones that trace their location and alert the authorities if they leave a certain area . A high credit rating from the system would help the ex - offenders find a job and apply for financial help . The launch comes as Guangzhou expands its use of blockchain technology , with the central government planning to introduce national blockchain standards .
China has launched a blockchain-enabled platform to supervise ex-prisoners and those on parole and probation, and plans a credit evaluation system for them by the end of the year. Ex-offenders in Guangzhou's Chancheng district will wear smart wristbands that trace their location and alert the authorities if they leave a designated area. A high credit rating from the system would help the ex-offenders find a job and apply for financial help. The launch comes as China increases its use of blockchain technology, with the central government planning to introduce national blockchain standards.