ChipID
ChipID is a hardware-embedded identifier assigned to a silicon chip to uniquely distinguish its model, vendor, revision, and sometimes production lot. It is typically stored in non-volatile on-chip memory, such as fuse bits, one-time programmable (OTP) memory, or dedicated ROM, and is exposed to software through a memory-mapped register or a hardware API. The format and scope of a ChipID vary by vendor and product line; some implement a compact ID that encodes vendor and family, while others provide a broader set of fields including revision, die, and lot information.
Access to ChipID is usually read-only and can require privileged access on some systems. Software such as
The behavior of ChipID varies across architectures and vendors. ChipIDs are not guaranteed to be globally unique
Related concepts include device serial numbers, MAC addresses, and unique device identifiers used for inventory, licensing,