Blockchain Fundamentals

Consensus

Consensus is the mechanism that allows blockchain participants to agree on the state of the ledger without a central authority. Whether it’s Proof of Work, Proof of Stake, or other protocols, consensus ensures that only valid transactions are added to the chain. It prevents double-spending, deters fraud, and keeps decentralized networks trustworthy. This process is fundamental in all blockchain applications, from cryptocurrencies to supply chain systems. Without consensus, distributed systems would be chaotic and unreliable—making it the backbone of blockchain integrity and transparency.

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