# Block Height

> The number of blocks that have been added to a blockchain since its very first one.

Canonical URL: https://fudfomo.co/glossary/block-height
Source: What The Block! Dictionary v1.0 (last updated 2026-04-25), browsable at https://wtb.fudfomo.co.

## Definition

Block height is a counter for how many blocks have been produced on a chain. The genesis block is height zero, and every new block adds one to the count.

Block height is often used to time-stamp events on chain or to schedule things like upgrades and halvings. Two transactions in the same block share a block height; their order within the block is set separately by the producer.

## Related terms

- [Block](https://fudfomo.co/glossary/block): A bundle of transactions added to a blockchain together.
- [Genesis Block](https://fudfomo.co/glossary/genesis-block): The very first block of a blockchain.
- [Halving](https://fudfomo.co/glossary/halving): An event where the reward for mining new Bitcoin blocks is cut in half. Happens roughly every four years.
- [Blockchain](https://fudfomo.co/glossary/blockchain): A shared digital record of transactions that no single person or company controls. Everyone can read it, and changes are extremely hard to fake.

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