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Proof Of Staked Authority (PoSA)
Proof of Staked Authority (PoSA) is a combination of Delegated Proof-of-Stake (DPoS) and Proof-of-Authority (PoA) consensus mechanisms. Binance Smart Chain (BSC) relies on Proof-of-Staked Authority
Example
“On BSC, 21 elected validators secure the network under the PoSA model, combining staking requirements with trusted-authority validation to achieve fast 3-second block times.”