Distributed consensus is the sheer backbone of how a decentralized network works. Distributed consensus is the collective agreement that all the nodes within a network need to reach upon.
Since every node within the network has possession of an identical copy of the ledger, it is very important to come to an agreement regarding the version of the ledger every node must use. This is where blockchain projects rely upon consensus algorithms.
Proof-of-Work (PoW) remains the very foundation of blockchain-based consensus, where mining of new blocks takes place. But newer, consensus mechanisms are also being adopted by blockchain including Proof-of-Stake (PoS) for greater adaptation.
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