Proof of Work
CryptoGlossary term
Definition
A consensus mechanism that requires miners to solve computationally intensive mathematical puzzles to validate transactions and add new blocks to the blockchain. It was the first consensus method used in blockchain technology and remains the mechanism behind Bitcoin. While highly secure, Proof of Work is criticized for its significant energy consumption and environmental impact.
Related terms
- Mining (Cryptocurrency)The process of using specialized computer hardware to solve complex mathematical puzzles in order to validate transactions and add new blocks to a blockchain. Miners are rewarded with newly created cryptocurrency and transaction fees for their computational work. This process is central to Proof of Work blockchains like Bitcoin and requires significant electricity and computing power.
- Hash RateA measure of the computational power being used to mine and process transactions on a Proof of Work blockchain network. It represents the number of hash calculations a miner or the entire network can perform per second. A higher hash rate indicates a more secure network because it would require more computing power for a bad actor to attack it.
- Proof of StakeA consensus mechanism where validators are chosen to create new blocks and confirm transactions based on the amount of cryptocurrency they have staked as collateral. It is considered a more energy-efficient alternative to Proof of Work because it does not require massive computational power. Ethereum adopted Proof of Stake in 2022, dramatically reducing its energy consumption.
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