Nakamoto Consensus
The Bitcoin-style consensus model combining proof of work, economic incentives, and selection of the chain with the greatest accumulated work.Definition
The Bitcoin-style consensus model combining proof of work, economic incentives, and selection of the chain with the greatest accumulated work.Why it matters
Consensus concepts explain how independent nodes agree on one shared history without a central coordinator.How it works
Nodes propose blocks by solving hash puzzles. When a valid block is found, it is broadcast to the network. Nodes follow the ‘longest chain’ rule, which dictates that they must always extend the version of the blockchain that has the greatest total computational effort invested in its history.Real-world example
Bitcoin remains the primary and most famous implementation of Nakamoto Consensus.Advantages
- Extremely high security
- Battle-tested over a decade
- Allows for permissionless participation
Limitations
- High energy consumption
- Slow transaction processing
- Risk of mining centralization
Common misconceptions
- Many believe it is the only form of consensus. It is often incorrectly criticized as ‘non-scalable’ without considering that it achieves security at the base layer.
Related knowledge
- Block Producer — term
- Finality — term
- Proof of Stake — term
- Validator — term
Canonical knowledge ID:
glossary:nakamoto-consensus