Let your users ask one more question before they pay

One line of code. A user pastes a payee address; if it hits sanctions lists, mixers or scam lists, they get a red warning. Free, unlimited, no signup.

↓ This is what it looks like installed — try it

What it does for you

Fewer “wrong address” disputes. On-chain transfers are irreversible. When a user sends to the wrong address, they come to you first — not to the scammer. A pre-payment check absorbs that support load.
A listed entry with a link. Once installed, your domain appears in the “Sites using it” list below and in the partner directory. We only list domains verified by the browser — never self-reported ones.
Something you can tell your users. “This site screens payees before payment” — not a marketing line; the thing is actually on the page and they can use it.

Will it cause you trouble

It won't slow your site

Loads asynchronously, never blocks rendering, and doesn't load until the user scrolls to it.

It won't touch your CSS or JS

It runs in its own iframe — no class collisions, no script conflicts, and no CSP changes on your side.

It collects no user identity

No cookies, no user identity. All we learn is that some domain is using the widget.

A failed load won't leave a dead box

If a browser extension or your CSP blocks it, it falls back to a plain link instead of leaving a blank box.

Who's responsible if it's wrong

Ours, not yours. The widget states plainly that screening is provided by OceanAlt and that results are not the host site's responsibility — and that “no risk signal” does not mean safe. We never present it as a guarantee. It asks one more question before a payment; it is not insurance.

It runs the other way too: installing the widget does not mean OceanAlt guarantees the safety of, or certifies, your product, your page, or any address on it.

Full terms & disclaimer →

How to install (five minutes, no coding)

Click a few options below and we'll give you one complete line. You only do two things: copy, paste.

1What is your site for?

Pick one — the widget's wording follows. Unsure? Pick General.

Pick this if unsure

2Chinese or English?

(Optional) Give yourself a name

Fill this in and you get a private URL showing how many lookups your site generated. Anything works — letters or digits, e.g. your site name. It's fine to skip.

3Copy this line

<script src="https://oceanalt.com/embed.js" data-oceanalt-check data-lang="en" async></script>

4Where do I paste it?

Pick whichever matches your setup:

1.Log in → Appearance → Widgets
2.Where you want it (sidebar, footer), click “+”, search for “Custom HTML” and add it
3.Paste the line you copied above into the box, then Update
4.Open your site — it should be there

5How do I know it worked?

Open your site — an input box should appear there. Run these two checks:

① Paste this address — you should get a RED warning

0x8589427373D6D84E98730D7795D8f6f8731FDA16

That's Tornado Cash — a mixer.

② Then paste any ordinary address — you should get GREEN

Do both. With only one, you can't tell whether it's actually judging or just always says the same thing.

Not showing? Something on your site is likely blocking it — send us the URL at business@oceanalt.com and we'll take a look.

Two more cards, also one line

Rating card: how a protocol / provider scores on RAP

<script src="https://oceanalt.com/embed.js" data-oceanalt-check data-mode="rating" data-slug="skyfire" data-lang="en" async></script>

Replace data-slug with the last segment of the rating page URL.

Weekly card: the latest Agent Economy Weekly

<script src="https://oceanalt.com/embed.js" data-oceanalt-check data-mode="briefing" data-lang="en" async></script>

Updates itself every week; nothing to change.

Sites using it

To become a formal partner — directory listing, integration badge, your own integration data: Partner Network →

Questions — just email: business@oceanalt.com