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Roronoa Zorro
@roronoazorro
Learn about the consensus mechanism in the blockchain today. Let's say you have an agreement with a few friends that each of you is responsible for keeping a shared ledger of all transactions between you. Whenever a transaction occurs, everyone needs to write the corresponding entry in their own ledger. The question is, everyone is in different places, how do you make sure that everyone's ledger is the same? What if one of them modifies the ledger? And, if people don't trust each other, who can guarantee that these records are correct? Blockchain is faced with such a problem: how to ensure that the globally distributed nodes (computers) can reach an agreement without a central manager, and ensure the authenticity and consistency of transaction data? This needs to be solved through a consensus mechanism.
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Roronoa Zorro
@roronoazorro
The core concepts of the consensus mechanism: A consensus mechanism is a protocol that ensures that all nodes (computers) in a blockchain network agree on the transactions and data that occur on the blockchain, ensuring the accuracy and immutability of the data. In simple terms, a consensus mechanism is like a "rule" that helps all participants (nodes) verify and confirm transactions on the blockchain without a central authority. In traditional centralized systems, such as banks, all transactions are verified and recorded by banks or other centralized institutions. But in blockchain, there is no single agency to do these jobs. All nodes need to participate together to ensure the validity of transactions by reaching consensus.
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