Nakamoto Consensus: How Decentralized Networks Reach Agreement
Nakamoto Consensus uses proof of work, difficulty adjustment, miner incentives, and distributed verification to enable mutually distrustful participants to jointly maintain the same blockchain record without a central authority.
Core Objectives and Components
Nakamoto Consensus enables participants in a blockchain network to reach agreement on the state of the ledger without coordination by a central authority. Its core components include proof of work, automatically adjusted block difficulty, block rewards and transaction fees for miners, and miners and nodes distributed around the world.
From Transactions to New Blocks
Users first broadcast transactions to the network, and nodes check whether the transactions comply with the rules and whether balances are sufficient. Miners collect validated transactions and assemble them into candidate blocks, then use computational power to perform hash calculations. The first miner to find a valid result broadcasts the block, and other nodes add it to the blockchain after verifying it.
Security and Ongoing Operation
Each new block is cryptographically linked to the preceding block, making the historical record more difficult to tamper with. Mining difficulty adjusts as network computational power changes to maintain a relatively stable block production rate; block rewards and transaction fees encourage miners to continue contributing computational power and jointly maintain the network's operation and security.
Key Benefits and Limitations
This mechanism enables participants to verify transactions and blocks according to public rules without needing to trust one another, while reducing the risks of double-spending and ledger tampering. A public ledger helps improve verifiability, while a decentralized structure enhances network resilience. However, security still depends on nodes following the rules and sufficiently distributed computational power participating in the network.
Original Tutorial
https://www.binance.com/zh-CN/academy/glossary/nakamoto-consensus
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