Bitcoin
Bitcoin
BTC
$103,150.00
1d: -0.72%
7d: -0.10%
$103,150.00
-0.72%
Ethereum
Ethereum
ETH
$2,471.66
1d: -4.45%
7d: -1.10%
$2,471.66
-4.45%
Polkadot
Polkadot
DOT
$4.61
1d: -4.36%
7d: -9.27%
$4.61
-4.36%
Solana
Solana
SOL
$165.25
1d: -3.20%
7d: -4.06%
$165.25
-3.20%
XRP
XRP
XRP
$2.34
1d: -3.21%
7d: -3.33%
$2.34
-3.21%
Shiba Inu
Shiba Inu
SHIB
$0.00001411
1d: -4.95%
7d: -11.75%
$0.00001411
-4.95%

Proof of Activity (PoA)

Share this article:
x fb linkedin tg
Table of contents
    1. 0.2. How Proof of Activity Works
    2. 0.4. Why PoA Matters

Proof of Activity (PoA) is a hybrid blockchain consensus mechanism that combines elements of Proof of Work (PoW) and Proof of Stake (PoS) to validate transactions and secure the network.

How Proof of Activity Works

In PoA, the process starts with miners solving a cryptographic puzzle like in PoW. Once a new block is found, the block doesn’t contain transactions yet. Instead, it triggers a second phase where a group of randomly selected validators (based on their stake) signs off on the block before it’s finalized. This two-step process merges the security of PoW with the energy efficiency and trust model of PoS.

Why PoA Matters

PoA aims to overcome the limitations of pure PoW or PoS systems. It reduces energy consumption while keeping the network secure and decentralized. It also discourages centralization by requiring both computational work and stakeholder consensus. Projects experimenting with PoA seek a balanced approach to performance, security, and sustainability.