A seal is only worth something if you can find out what it checked. This page explains exactly what we verify before publishing a certificate, where each badge comes from, and what happens when a certificate stops being valid. Type: Explanation. Audience: consumers, laboratories, retailers and authorities.
Why this page exists
Anyone can put a gold seal on a PDF. The useful question isn’t “does it have a seal?” but “what had to be true for that seal to appear?”. Here’s the answer, with no fine print.1. What we check before publishing
No certificate is published without passing an automated review. If something doesn’t add up, the certificate doesn’t go out — not with a warning, it doesn’t go out. This is what gets checked:
These same checks run again every day over already-published certificates. A certificate
valid the day it was issued can stop being valid later: laboratories change, accreditations
expire. If one degrades, we find out.
2. What backs each badge
Badges are not ticked by hand. Each one has to be earned, and there are three different ways to earn one:Accreditation badges — ISO/IEC 17025, ISO 9001, FSSC 22000, cGMP…
They come from the laboratory registry: each lab has its credentials with the issuing body, number, scope and validity. The badge appears only if the credential is current and has not expired. If it’s pending, expired or unverified, it is not shown — even if someone ticked it. And it isn’t inherited: if a laboratory changes its legal entity, the previous entity’s accreditation does not transfer to the new one. That’s a rule of the accreditation system itself, and we honour it even when it costs us a badge.The EUM VERIFIED badge
It’s granted by the system, not by a person. It appears when the certificate passed every check in section 1. That’s exactly what it means: our automated integrity checks were satisfied. It does not mean the laboratory is accredited — that’s what the other badges say, and that’s why they’re separate.Data-derived badges
Some are computed from the analysis itself. For example, “100% THC FREE” only appears if measured total THC is zero. If the analysis reports THC, the badge is not shown: printing a claim next to the table that contradicts it would make no sense.Every badge on a certificate carries its footnote explaining what backs it. If you can’t see what holds a seal up, that seal shouldn’t convince you.
3. Withdrawn certificates
Sometimes a certificate has to come down: it was issued with an error, the analysis was redone, or it should never have been published. When that happens we don’t delete the record. The QR code is already printed on a product someone is holding, and a link that simply stops existing is indistinguishable from a broken link or a system outage. Instead, the link tells you:Certificate withdrawn. This certificate was withdrawn on and no longer covers the product. Reason: .The record, the date and the reason remain. Like a notary: the entry isn’t crossed out, the cancellation is recorded. Every withdrawal requires a written reason — a certificate cannot be withdrawn without stating why.
4. Why every number comes with an explanation
Whoever scans a QR is neither a chemist nor a lawyer. It could be a customer in a store, an inspector, or the producer, and they arrive with three questions: is this legal?, what’s actually in it?, why should I believe this piece of paper? That’s why every certificate includes its notes, both on screen and in the PDF:- The THC limit — where the 1% comes from (Mexican General Health Law, article 245) and what this specific batch measured.
- How total THC is calculated — it isn’t the direct sum of the table: it’s
(0.877 × THCA) + Δ9-THC, because THCA converts into THC when heated. - What the percentages mean — relative to the weight of the product, with an example in grams.
- Who states what — the product name, presentation and batch number are stated by whoever submitted the sample; the laboratory measures the content and does not verify the label.
- What it covers and what it doesn’t — the certificate reports cannabinoids; it does not assess heavy metals, pesticides, solvents or microbiology unless stated.
- Where the results come from — laboratory, real analysis date and method.
5. What a Smart COA does NOT claim
Being explicit here is part of being trustworthy:- It does not endorse the label. The laboratory measures what’s in the sample. If the package says 750 mg and the analysis reports something else, the certificate shows what was measured — it does not back what was printed.
- It does not cover what wasn’t tested. A cannabinoid certificate says nothing about heavy metals or pesticides.
- It does not apply to other batches. Results correspond solely to the sample the laboratory received.
- The EUM VERIFIED badge is not an accreditation. It’s our integrity verification; the laboratory’s accreditation is a different thing and is shown separately.