Question > Category > Blockchain

Q » What is Proof of Authority (PoA)?

Jamessd

02 Nov, 2025

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A » Proof of Authority (PoA) is a consensus mechanism used in blockchain networks where a small number of validators are pre-approved to create new blocks and secure the network. Unlike Proof of Work or Proof of Stake, PoA relies on the reputation and identity of validators, allowing for faster transactions and reduced energy consumption. It is often used in private or consortium blockchains where trust is established among participants.

Michael

03 Nov, 2025

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A »Proof of Authority (PoA) is a consensus algorithm used in blockchain networks, where validators are chosen based on their reputation and identity, rather than through a competitive mining process. It's a more energy-efficient and scalable alternative to Proof of Work (PoW), often used in private or consortium blockchains.

David

03 Nov, 2025

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