Cloud computing is an emerging technology which provides the computing and data storage services in the form of clusters. User can share data from one cluster to other or in same cluster. Data integrity is the major security issues in the shared cloud environment because after store/share data in cloud, user lose their control. This paper describes the data traceability methodology, when the user share data in a shared cloud from one location to another location. In this methodology user make a random challenge to third party like public verifier to check the metadata. This public verifier improves the data integrity of the cluster which contains the identification of the signer and information of metadata. This mechanism can be referred as Shared Data Traceability Protocol (SDTP) in cloud environment. © 2015 IEEE.
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