<aside> 🗒️ Part of Ari's Unreal Engine Notes.

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• Actor names are in the format of Class Name + "UAID" + ID Name. The actor's editor-only label (which you see and can change in the world outliner) is ignored. ID Name is a 102-bit GUID that is composed of the computer's MAC address (48 bits) and OS time in microseconds (54 bits) of the time of creation. The first 72 bits are in hexadecimal, the last 30 bits are stored as a number. See FActorGUIDGenerator for the implementation. An example actor's name would be Actor_UAID_B06EBF303DDC40B700_1677926337.
• For "One File Per Actor" (OFPA), the actor's .uasset files are named in this format: Actor's full name (including the level path, like /Game/TestLevel.TestLevel:PersistentLevel.Actor_UAID_B06EBF303DDC40B700_1677926337) turned lower case, turned MD5, turned Base36 (to support case-insensitive OS file systems). See ULevel::GetActorPackageName for the implementation. The above actor's file name path would be /Game/__ExternalActors__/TestLevel/9J/KZ/KKW1DHLCSM8159FWSRL5P.
• In its current implementation, every single created actor can be traced back to the computer that created it using the MAC address portion of the actor's name.