Consensus
Também conhecido como: Consensus Mechanism, Consensus Protocol, Consensus Algorithm
The method by which a blockchain network agrees on the current state of the ledger and validates new transactions.
A consensus mechanism is the system by which a distributed network of nodes agrees on which transactions are valid and the current state of the blockchain. Without a central authority, consensus mechanisms enable trustless agreement among potentially adversarial parties.
Why Consensus Matters: - Prevents double-spending - Ensures all nodes have the same ledger copy - Determines who can add new blocks - Defines network security model
Major Consensus Mechanisms:
Proof of Work (PoW): - Miners compete to solve cryptographic puzzles - First to solve adds the block, earns reward - Used by Bitcoin, Litecoin - Highly secure but energy-intensive
Proof of Stake (PoS): - Validators stake tokens as collateral - Selected to propose blocks based on stake - Slashing punishes malicious behavior - Used by Ethereum, Cardano, Solana
Delegated Proof of Stake (DPoS): - Token holders vote for delegates - Delegates validate on behalf of voters - Higher throughput, more centralized - Used by EOS, Tron
Proof of Authority (PoA): - Known validators approved by network - Fast and efficient - Less decentralized - Used by private/consortium chains
Byzantine Fault Tolerance (BFT): - Nodes vote on block validity - Can tolerate up to 1/3 malicious nodes - Many variants (PBFT, Tendermint) - Used by Cosmos, some enterprise chains
Consensus Trade-offs (Blockchain Trilemma): - Security vs. Decentralization vs. Scalability - Different mechanisms prioritize different properties
Termos relacionados
Análises cripto relacionadas
Explore como Consensus se aplica a estas criptomoedas com uma análise STRICT aprofundada.