Overview
Only Ledger Records are stored in the DLT. Every records points to an encrypted Ledger Operation which is stored in the off-chain storage as encrypted blobs. Because this data can only be decrypted by relevant participants, it’s not a part of the critical ledger data and can in theory be lost/removed. It’s yet to be decided whether it should remain this way. This ability to make Ledger Operations unavailable can be useful for transient data, or data which was requested to be ‘forgotten’.
See the Data Model section below for detailed description of Ledger Operations.
Generally each Ledger Operation defined a data management or sharing action performed with the data (for instance, granting and revoking access to a particular data set). The Operation contains sufficient meta-data to describe where the actual data set resides, how to retrieve it, and how it relates to the global Knowledge Graph (see below).