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ERS Approach Client - Submission Select data objects (document, ..) Optional: Encrypt data objects Trusted Archive Authority – Reception and maintenance Initial Archive Time-Stamp Renewal: Time-Stamp Renewal, Hashtree Renewal Reduce hashtrees, generate Archive Timestamps Elements Client - Retrieval Optional: Decrypt data objects Optional: Add encryption info to record Optional: Integrate as an attribute if wanted Verify Archive Time-Stamps Element and document |