Age verification

What the clause says

Verification computes age from the difference between the current date and a date of birth held in a document or authoritative record. The relying party need not receive the date of birth.

What it supplies to a comparison

The measurable questions are document validity, issuer authority, freshness and binding. The arithmetic itself is rarely the weak point.

Evidence to keep

• The document or record type and its issuer.
• The freshness or revocation check, with a dated example.

What the evidence looks like

For 4.3.1, the first artefact is The document or record type and its issuer.. The second is The freshness or revocation check, with a dated example.. If 4.3.1 has no first artefact, the practice is unproven at 4.3.1, and the report should record the absence rather than infer the practice from a policy.

Questions for the provider

1. How is a genuine document issued to the wrong person detected?
2. Does the relying party receive the date of birth, or only the eligibility result?

How it connects to the draft

Age verification belongs to 4 characterisation, and it gives the analysis one fixed point: The measurable questions are document validity, issuer authority, freshness and binding. The arithmetic itself is rarely the weak point. A comparison that cannot place a result against 4.3.1 is measuring something the framework has not defined, and the report should say so.

In the register, 4.3.1 is read beside the unit that tests it, and where it sets an objective rather than a number, that unit turns the objective into a question and an evidence artefact.