Bitcoin Is Decentralized: Thousands of Nodes and Miners
bitcoin’s decentralization stems from thousands of independent nodes and miners worldwide that validate transactions, secure the network, and prevent single-point control or censorship.
What Is Proof of Work? How Bitcoin Is Secured
Proof of Work requires miners to solve difficult cryptographic puzzles to add blocks and confirm transactions. bitcoin uses PoW so altering history becomes computationally impractical.
How Bitcoin Works: P2P Network and Cryptographic Consensus
bitcoin operates as a decentralized peer-to-peer network where nodes validate transactions and relay blocks; cryptographic consensus via proof-of-work secures the ledger, preventing double-spending without central authority.