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Proof-of-Activity (PoA) is a hybrid blockchain consensus mechanism that blends aspects of both Proof-of-Work (PoW) and Proof-of-Stake (PoS) to achieve secure, decentralized agreement on a distributed network. It was introduced to combine the security of mining with the energy efficiency and economic incentives of staking. The concept was first proposed in 2014 by Iddo Bentov, [...]