Knowledge base
Trust Flow, Citation Flow, referring domains and Topical Trust Flow are measured by Zinn® from the site you name - never entered by the seller. Here is what each one means and when it appears.
When you list a backlink, a guest post or a niche edit on the Zinn® marketplace, you give us the address of the site. You do not give us its authority scores — we measure them ourselves.
Four figures, read from the site you named:
buyers judge a domain on.
A finance blog at 40 is often worth more to a finance client than a general news site at 60.
A seller-supplied authority score on a marketplace we operate is not a data-entry convenience, it is a fraud vector. If sellers could type their own numbers, the numbers would be worth nothing to buyers - and the numbers are the product. So the form shows them read-only, under "Measured by us", with the date we last checked.
If you try to send one anyway, the API refuses it and tells you why.
Measurement runs on a schedule, so a brand-new listing can show no figures for a short while. That is "not measured yet", which is a different thing from "this domain has nothing" - we never write a zero we did not read.
If a domain is not in the index at all, we say so rather than showing zeros.
Every figure on a listing carries the host it was measured against and the date. If you list a subdomain, we measure the subdomain - never its parent - so the score belongs to the thing being sold.
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