This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. 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

v. To compute a checksum.

n. 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

"That's when Apple first introduced a special operation, called a checksum hash, into its products to ensure that Apple's devices were communicating with iTunes and not some other type of software."

check    verification    confirmation    substantiation   

cyclic redundancy check    CRC   

least-significant    cash-f    hexadecimal    decryption    rsync