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The Journal is data that is ancillary data to the main Fungible Data. It may or may not be implemented using a separate Ledger and it may exist within another DIDO-Network but its care and maintenance does not have to be part of the Ledger’s Transactions. For example, the monetary exchange rate between two currencies is ancillary to a Cryptocurrency Ledger; however, the almost instantaneous updates to the exchange rate would not be appropriate in the Cryptocurrency Ledger itself.