It's this I believe: https://www.w3.org/TR/vc-data-model-2.0/
This would only work with something like MS TPM 2 / Apple Secure Enclave (device attestation), which is anti-freedom by design. I was curious if they found a way around that (maybe with time/rate limits, or some actual useful use of blockchain tech).
If Apple can remotely lock the device that an user bought mistakenly (for example because some corporation somewhere fat-fingers some entries), that fundamentally means the user doesn't own the device they bought and paid for. Add on top DRM and all the other evil that comes along with attestation.
Plus, you can still disable TPM2 (if you don't want to run Windows on your machine), you can never disable Apple's implementation.