- Proof of work (PoW) is a decentralized consensus mechanism that requires members of a network to expend effort solving an arbitrary mathematical puzzle to prevent anybody from gaming the system.
- Proof of work is used widely in cryptocurrency mining, for validating transactions and mining new tokens.
- Due to proof of work, Bitcoin and other cryptocurrency transactions can be processed peer-to-peer in a secure manner without the need for a trusted third party.
- Proof of work at scale requires huge amounts of energy, which only increases as more miners join the network.
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