How do I add a free crypto address checker to my own website?
One line. Paste this script tag into your page and a working address-check box appears in place (sanctions, freezes, mixers and scam lists in one pass, with evidence): <script src="https://oceanalt.com/embed.js" data-oceanalt-check data-lang="en" async></script>. It's free, needs no signup, and collects no identity data about your visitors. A fit for content sites, tool sites and wallet help pages — your readers check an address without leaving your page.
Three more shapes to choose from
Beyond the check box: risk badges (data-mode="badges", a risk marker appears next to every address on your page automatically), a rating card (data-mode="rating", showing a protocol's compliance rating), and a briefing card (data-mode="briefing", a self-updating industry digest). Full options and live demos at oceanalt.com/en/partners/embed.
For programmatic integration (your own UI): the keyless GET oceanalt.com/api/risk?addr=… returns the same verdict and evidence, to render however you like.
Three notes for site owners
① The widget runs in an iframe and cannot read the rest of your page. ② Verdicts and evidence are provided and attributed to OceanAlt — your site doesn't vouch for the conclusions. ③ For visitor attribution (who arrived via your site), add data-partner="your-id"; details on the Partner Network page.
The honesty boundary ships with the widget: the "no risk signals ≠ safe" framing is built into the results, so it never turns into an overclaim on your site.
Where to start: free address check · API docs · watch an address
Boundary of everything above: a screening "clear" only means no match in the data held, never a safety guarantee; this page is not legal or compliance advice.