How Does the Concept of “Block Time” on a Blockchain Relate to CEX Time-Stamping?

Block time is the average time it takes to produce a new block on a blockchain. It dictates the maximum resolution of transaction ordering, which is typically seconds or minutes.

CEX time-stamping, in contrast, is precise to the microsecond or nanosecond. The low resolution of block time is a key factor enabling MEV front-running, as multiple transactions can be ordered within the same block, a scenario impossible in a CEX's precise time-priority system.