The proof rail
Every field carries its provenance.
In the register, a value never stands alone. Each field records who stated it, who verified it, and until when it holds — so a claim is substantiated, or it is not published.
Provenance on the field, not in a folder
Evidence attaches to the exact value it supports — the recycled-content percentage, the country of origin, the substance declaration — not to a shared drive of documents someone will have to search through later.
Validity windows, not stale certainties
Attestations expire. Every piece of evidence in Listrar carries a validity window, so the register knows when a certificate lapses — and shows it before a regulator or a customer finds out first.
Green claims that survive scrutiny
The EU Green Claims Directive and the FTC Green Guides ask the same question: can you substantiate that? In Listrar the question is settled before publication — an unsubstantiated claim simply does not go out.
An audit trail a regulator can read
When an authority asks how a value was established, the disclosure is already organized: source, verifier, validity, in order. No reconstruction project, no week of email archaeology.