What is Nakamoto Consensus?
Nakamoto consensus combines Proof of Work with the 'longest valid chain' rule. Honest nodes always extend (and consider canonical) the chain with the greatest cumulative work, making it prohibitively expensive for an attacker with less than majority hash rate to rewrite history.
Why Nakamoto Consensus matters
Understanding Nakamoto Consensus is part of building a solid mental model of how Bitcoin, blockchain and Web3 systems actually work. Concepts in the Bitcoin category sit at the foundation of the broader stack — get them right and the rest is far easier.
Learn this interactively
Reading the definition is a start. ZeroToBlock teaches concepts like Nakamoto Consensus through hands-on, browser-based simulations. Build the mental model by actually using it:
- Bitcoin 101 — interactive fundamentals course
- Bitcoin Proof of Work — mining, hashing and consensus
- Browse all interactive blockchain courses
Related terms
- Proof of Work — A consensus mechanism that requires computational work to add blocks.
- Consensus Mechanism — The rules a network uses to agree on the canonical chain.
- Reorganization (Reorg) — Replacing recent blocks with a competing chain that has more work.
More bitcoin terms
- Address (Bitcoin / Crypto Address) — A public destination for receiving cryptocurrency.
- Block Header — The metadata at the top of each block.
- Block Reward — New coins paid to the miner of a block.
- Difficulty — A parameter that controls how hard it is to mine a block.
- Double Spend — Attempting to spend the same coin twice.
- Halving — The scheduled 50% cut in Bitcoin's block subsidy.
- Hash Rate — The total computational power securing the network.
- Mining — Producing new blocks by performing Proof of Work.
Keep exploring
Continue with the full blockchain glossary — 136 terms in total — or read the developer blog and FAQ for deeper context.