ConceptProof of Work / PoW
Proof of Work
A cryptographic mechanism requiring a computing party to complete a defined amount of computational work before obtaining a right or passing verification. It serves as the core consensus mechanism in Bitcoin and other blockchain systems, and has also been applied in anti-spam contexts.
Timeline (last 90 days)
Oct 16
Common defenses against Sybil attacks include proof of work (PoW), staked identity and verifiable credentials (VC).
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Oct 13
The 'proof of work' in this scenario relies on geolocation, timestamps and human visual judgment, not on computing power as in blockchain.
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