Embed “verify this document” on your site

One script tag. The widget renders in a shadow DOM (no CSS clashes) and calls the public, keyless verification API. Show a badge for a specific document, or let visitors drop a PDF to check.

1 · Badge for a specific document (by SHA-256)

<div data-letsseal-verify data-hash="<sha256>"></div>
<script src="https://app.letsseal.org/embed.js" async></script>

2 · Drop-a-PDF checker

<div data-letsseal-verify></div>
<script src="https://app.letsseal.org/embed.js" async></script>

The widget always links to the full proof page and explains how to verify independently (the Bitcoin anchor + the certificate chain in the PDF) — so trust never rests on us or on the site hosting the widget.