Verify a sealed drawing

Drop in the sealed document you were given. Your browser computes its SHA-256 digest and sends only that digest — the drawings themselves never leave your computer, are never uploaded, and are never seen by anyone here. That is deliberate: someone checking a stranger’s construction documents has every reason to be careful where they put them.

If the digest matches a seal recorded here, you get three separate facts rather than a single yes: the seal record, the engineer’s licence as it stood on the seal date, and that licence’s standing today, including anything the issuing board has done since. The answer also carries the digest of the drawing package the engineer examined, from which the document you are holding was produced — two files, two digests, and the second one is what makes the link between them checkable rather than asserted.

Read the Exceptions & Limitations statement before relying on anything. A seal covers only the sheets it names, at the revision it names. A set of twenty-three sheets containing three sealed ones is the single most common way a partial seal is misread.

Choose the sealed document

It is hashed in this browser. The file itself is never uploaded and never leaves your computer — only the 64-character digest is sent. Choose the document you were handed, whole and unmodified: the one carrying the seal block, the Scope of Seal and the Exceptions & Limitations.

Or paste a SHA-256 digest

What this page does and does not tell you

It tells you that a specific sequence of bytes was sealed on a specific date by a specific licensed engineer, what that engineer stated the seal covers and excludes, and what the issuing state board’s register said about their licence then and now.
What the sealed document carries is a seal block in text on each sealed sheet, the Scope of Seal, the Exceptions & Limitations, and a plain stamp on every delivered sheet the seal does not cover. It does not carry a graphic reproduction of the engineer’s registered seal impression, and it is not cryptographically signed — a viewer will show no signature panel. Where a jurisdiction requires the registered impression, the document does not meet that requirement on its own. Both absences are stated on the document itself, and are repeated here because neither can be discovered by looking.
It does not tell you that the engineering is correct, complete, or fit for your purpose. That judgment is the engineer’s, and they are the one who accepted responsibility for it. iPE is a marketplace, an escrow agent, and a recordkeeper: it is not a party to the engineering contract, does not offer or perform engineering services, and expresses no opinion on the content of any sealed document.
A digest that matches nothing is not evidence of forgery, and it is not an error. The document may have been re-saved, flattened, rotated, or combined with other sheets after it was issued — any of which changes the digest completely. It may be the drawing package rather than the sealed document composed from it. Or it may have been sealed somewhere other than iPE, which this page cannot see.

Questions about a specific seal go to the engineer named on it. Questions about this record go to leo@iges-ai.com. See also the privacy policy.