A duplicate of a blockchain’s data is referred to as a replicated ledger. Ledgers are divided into master and slave copies in this system. Slave ledgers are only duplicates of the master copy, whereas master ledgers include authoritative copies of blockchain data.
The replicated ledger is designed to reduce the risks associated with providing each network participant with a single copy of the blockchain ledger. Because the original blockchain will be duplicated multiple times, replicated ledgers do not have a single point of failure. Additionally, whenever a user adds a new transaction to their own individual ledger, the updates are distributed to everyone on the network.