The present invention provides a method and system for verifying integrity of cloud data using unconnected trusted device. The method involves requesting encrypted data though a terminal from a metadata offsite location on a cloud storage then entering encrypted data into an unconnected trusted device thereafter obtaining sentinel data from one or more predefined sentinel locations in encrypted data then requesting original data from the cloud storage through the terminal from the unconnected trusted device thereafter comparing sentinel data and original data for integrity and finally displaying the results.