Blockchain Consensus

Blockchain Consensus is a mechanism by which all nodes in a decentralized network agree on the state of the shared ledger. It ensures that transactions are valid, prevents double-spending, and maintains the integrity of the blockchain.
Different blockchains employ various consensus algorithms like Proof of Work (PoW), Proof of Stake (PoS), or Practical Byzantine Fault Tolerance (PBFT). Through these methods, nodes validate and confirm transactions, adding them to blocks which are then added to the chain.
This process not only secures the network against fraud but also allows it to operate without a central authority by distributing trust across all participants.