How do I verify a COA for SS-31 myself?

Adding a datapoint rather than asking anything.

Tried to verify a COA myself by emailing the lab on it. Never heard back. Not sure if that means anything.

I keep seeing people wave COAs around like they settle the argument. They don’t, and I say that as someone who used to do exactly that.

For what it’s worth the Institute has 2 published SS-31 reports, which is where I started.

Interested in actual experiences, and please say when you’re guessing.