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Proof-of-Authority (PoA)

By CoinGecko | Updated on Mar 03, 2020
On a technical layer, Proof of Authority performs block validation in a similar heuristic manner as Proof of Stake. However, whereas Proof of Stake assigns a validator's queue and importance based the amount of tokens staked by a validator, a Proof of Authority validator's queue arbitrarily predetermined based on their identity and repupation. This method of block validation addresses the issue of speed and scalability with the drawback of higher centralization as opposed to Proof of Stake or Proof of Work.

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Related Terms

Proof of Work (PoW)
A consensus algorithm in which a block is validated via mathematical hashing
Zero Knowledge Proof
Cryptographic proof for 2 parties to verify a value without revealing what the value is.
Atomic SWAP
Atomic Swap refers to the exchange of cryptocurrencies that operate in different block chains without intermediaries.
Proof-of-Burn (PoB)
A consensus algorthm that assigns block validation queue based on the coins/token burned by the validator.
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