Block Height
The sequential number of a block — the blockchain's built-in clock, counting up from block zero.
Block height is a block’s position in the chain: the genesis block is height 0, and every new block adds one. Bitcoin passed height 958,000 in July 2026, adding ~144 blocks a day.
Height works as the network’s native clock. Protocol events are scheduled by it — the next halving triggers at exactly block 1,050,000, regardless of the calendar date (our countdown converts height into an estimated date). “Confirmations” are simply the number of blocks added after yours: more height above a transaction means more finality.