Proof of Work (PoW)
Mining● Common
A consensus mechanism requiring miners to expend computational resources to find a valid block hash. The hash must be below a target determined by difficulty. Provides Sybil resistance, fair issuance, and immutable history by making block production costly.
Technical Notes
Bitcoin uses SHA-256d (double SHA-256). Miners vary nonce, extranonce, timestamp until hash < target. Energy expenditure is a feature: makes attacks expensive. Nakamoto consensus: longest (most work) chain wins. Block found ~every 10 minutes on average.
Metadata
Visibility: Public
Created:1/3/2026by System