+A **checksum** is a small, fixed-size value computed from a block of digital data. It acts as a digital fingerprint to quickly verify [Data Integrity](/wiki/data_integrity), ensuring the data has not been corrupted or altered during [Data Transmission](/wiki/data_transmission) or storage. A mismatch signals a potential error.
+## See also
+- [Error Detection](/wiki/error_detection)
+- [Hash Function](/wiki/hash_function)
+- [Cyclic Redundancy Check](/wiki/cyclic_redundancy_check)
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