Block Confirmation Lag

Mechanism

Block confirmation lag describes the temporal interval between a transaction’s inclusion in a block and that block achieving sufficient depth within the blockchain to be considered immutable. This lag is a direct consequence of the probabilistic nature of block production and network propagation delays. Subsequent blocks built upon an initial block provide cryptographic proof of its validity and permanence. The number of confirmations required varies by protocol and application, reflecting a trade-off between speed and security.