What is Nonce?
In Bitcoin mining, the nonce is a 32-bit field in the block header that miners increment (along with other auxiliary fields) to produce different header hashes. The goal is to find a value whose hash is below the difficulty target.
Why Nonce matters
Understanding Nonce 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.
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Related terms
- Mining — Producing new blocks by performing Proof of Work.
- Block Header — The metadata at the top of each block.
- Difficulty — A parameter that controls how hard it is to mine a block.
More bitcoin terms
- Address (Bitcoin / Crypto Address) — A public destination for receiving cryptocurrency.
- Block Reward — New coins paid to the miner of 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.
- Nakamoto Consensus — Bitcoin's consensus rule: follow the chain with the most work.
- Proof of Work — A consensus mechanism that requires computational work to add blocks.
- Confirmation — A block built on top of the block containing a transaction.
Keep exploring
Continue with the full blockchain glossary — 136 terms in total — or read the developer blog and FAQ for deeper context.