Block height

Block height is the number of blocks in a blockchain. It is used to measure the size of a blockchain and is an important metric for determining the security of a blockchain network. The higher the block height, the more secure the network is, as it indicates that more blocks have been added to the chain and the network is more resistant to attack. Block height is also used to measure the progress of a blockchain, as it indicates how many blocks have been added since the genesis block.