HashCodes are simply integer numbers that can identify information, often used in conjunction with [HashTables#1.3.6.1.4.1.33097.1.0.4]. A single integer is generally calculated per Datum#1.3.6.1.4.1.33097.5.0.1.6. HashCodes are often ephemeral unlike ConsistentHashCodes#1.3.6.1.4.1.33097.1.0.4.1. HashCodes are not data structures, however this seemed like the most logical place to track their definition.