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Difference Between POW POH POS in Blockchain

Diptendu Das
3 min readSep 29, 2023

Proof of Work (PoW), Proof of History (PoH), and Proof of Stake (PoS) are different consensus mechanisms used in blockchain networks to validate transactions, create new blocks, and secure the network. Here’s a brief explanation of each:

Proof of Work (PoW):

  • Usage: PoW is the original consensus mechanism used in Bitcoin and many other cryptocurrencies.
  • How It Works: Miners compete to solve complex mathematical puzzles using computational power. The first one to solve the puzzle gets to add a new block of transactions to the blockchain and is rewarded with cryptocurrency.
  • Security: PoW is known for its security because it requires a significant amount of computational power to compromise the network. However, it’s energy-intensive.

Proof of History (PoH):

  • Usage: PoH is a component used in the Solana blockchain to improve its overall scalability and performance.
  • How It Works: PoH is not a consensus mechanism but rather a mechanism for timestamping events and transactions. It provides a historical record of actions in the network.
  • Role: PoH helps in ordering transactions and ensuring the integrity of the blockchain by creating a chronological record of events. It’s…

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Diptendu Das
Diptendu Das

Written by Diptendu Das

Architect with 18+ years of expertise in #Java, #Go, #Rust, and #SpringBoot, with a passion for cloud technologies #AWS, #Azure , #microservices, #AI , #GenAI

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