Blockworks AI
New ChatExplore Blockworks AIReport Templates
Team Reports
Scheduled Tasks
What is a Proof of Staked Authority consensus model?

Proof of Staked Authority (PoSA) Consensus Model

Proof of Staked Authority (PoSA) is a hybrid consensus mechanism that combines elements of Proof of Authority (PoA) and Proof of Stake (PoS) 1. This model is designed to facilitate faster block times and reduced transaction costs, often at the expense of decentralization 1.

Key Characteristics of PoSA

PoSA relies on a limited set of validators who are responsible for securing the network, confirming new transactions, and updating the state of the blockchain 1+1.
  • Hybrid Mechanism: PoSA is a fork of the Binance Smart Chain (BSC) consensus mechanism, Parlia, and combines the identity-based validation of PoA with the token-staking requirement of PoS 1.
  • Limited Validators: Networks using PoSA, such as Chiliz Chain 2.0, operate with a limited number of validators, often a maximum of 11 1+1.
  • Staking Requirement: Validators and delegators must stake the network's native token (e.g., CHZ for Chiliz Chain) to participate in network security . This staking requirement provides a physical penalty on-chain for any malfunction or malicious behavior by the elected authority 6.
  • Block Production: Validators take turns producing blocks in a manner similar to PoA 1. The validator set is elected based on staking governance 1.

Comparison with Proof of Authority (PoA)

The PoSA model builds upon the principles of Proof of Authority (PoA).
FeatureProof of Authority (PoA)Proof of Staked Authority (PoSA)
Validation RequirementRelies on the identity and reputation of authorized entities 78.Relies on identity and the staking of monetary value (native tokens) +1.
Security StakeThe identity of the node is staked, not monetary value .Validators and delegators stake tokens (e.g., CHZ) to secure the network .
Use CaseOften used for private blockchain networks or logistical applications where trust and recognition are crucial 78.Used for public blockchains aiming for high-performance, such as Chiliz Chain 2.0 1.
While PoA leverages the value of identities and reputation, PoSA adds a financial stake to encourage decentralization and community governance, while still maintaining the efficiency of a limited validator set 71.
You're viewing a shared conversation. Your questions will start a new chat.