noun. A numerical value calculated from a series of bits of digital data, often by summing their values, used to test whether the data has changed during storage or transmission.

noun. a digit or character, derived by applying a suitable algorithm to some data, used to check whether errors have occurred in transmission, storage or data entry

verb. To compute a checksum.

noun. a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storage

"Of course, it's assuming that whoever built the downloadable file, computed the checksum, and wrote the web page listing the checksum is honest, but it's still a useful check to make."

CRC  cyclic redundancy check  

check  confirmation  substantiation  verification  

actuarial  algorithmic  arithmetical  brute force  cash-f