Let’s Seal

Issue and verify degrees, transcripts & credentials

Degree certificates, transcripts, and professional credentials that anyone can verify in seconds — no phone call to the registrar, no forgery that survives a check. Issue one or ten thousand, each sealed, timestamped, and carrying its own proof.

For universities, colleges, and awarding & professional bodies.

Open the app Developer docs
What a seal proves

Four guarantees, in education & credentials

A qualification that can't be faked

A changed grade, name, or award — a single altered byte — fails verification. The forged-degree problem, closed.

The awarding body, named

Every certificate names the institution that issued it, chaining to a published root — a specific certificate, not a printable logo.

Issued at a fixed date

The award date is timestamped on Bitcoin, so a certificate's date of issue can't be quietly back- or forward-dated.

Verified without phoning the registrar

An employer, a professional body, or another institution confirms a credential at a permalink — instantly, and free.

How it works

From your file to a proof anyone can check

The same pipeline every time — the seal and the timestamp travel with the file, so the proof is self-contained.

Your file
Your signed PDF
Seal
Signed over every byte · PAdES
Anchor
Bitcoin timestamp + public transparency log
Proof page
A permanent /d/… link travels with the file
Anyone verifies
Free, public, offline-capable — for anyone
The proof travels inside the file. Verification stands on the published root, the transparency log, and the Bitcoin ledger — so a court, a bank, or a counterparty can check it independently, forever.
Step by step · the web app

Seal it in the app — no setup

  1. 1

    Sign in as your institution

    Open app.letsseal.org and sign in. Your organisation gets its own certificate authority for issuing sealed credentials.

  2. 2

    Issue one or import a spreadsheet

    Enter a graduate's details, or upload a CSV of the whole cohort. Let's Seal generates a branded, sealed certificate for each — with a verify QR on it.

  3. 3

    Sealed, anchored, and delivered

    Every certificate is sealed with your certificate, timestamped on Bitcoin, and emailed to the recipient with a proof link.

  4. 4

    Anyone verifies at the link

    The graduate shares the proof page or QR; an employer opens it to confirm the credential is genuine, unaltered, and issued by you.

Step by step · the CLI

Automate it from your terminal or CI

The sealbot CLI does the same thing, scriptably — one command per file, straight into your pipeline.

# Issue a batch of credentials from a spreadsheet
$ sealbot credentials issue cohort-2026.csv --org examples
issued   248 credentials
  each   sealed · anchored to Bitcoin · emailed with a proof link

# Seal a one-off certificate PDF under your institution
$ sealbot seal degree-certificate.pdf --org examples
sealed   degree-certificate.pdf
  proof  https://letsseal.org/d/2a7f10…c93d

# An employer confirms a credential — public, no account
$ sealbot verify degree-certificate.pdf
✓ authentic · unaltered · sealed by Let's Seal Examples

Issue credentials in bulk from a CSV, or seal existing certificate PDFs. Each carries a permanent proof page and a QR — verifiable by anyone, with no call to your office.

Full CLI & API reference
See it in action

What a proof looks like, and what you can seal

Issuer verified — controls letsseal.org
Authentic & unaltered
Document
A sealed degree certificate
Issuer
Let’s Seal Examplesletsseal.org
SHA-256
64-hex fingerprint ✓

Anchored on Bitcoin

Recorded in the public transparency log

Public and free to verify — by anyone, with standard tools.
Open the live proof

A single use case, many documents. Each of these is sealed the same way:

  • A sealed degree certificate

    Live proof

    This is what an employer sees when they scan the QR or open the link: a genuine, unaltered certificate, issued by the named institution and timestamped — no registrar phone call required.

  • An academic transcript

    Seal the full transcript so a receiving university or employer can confirm every grade and module is exactly as issued, with nothing added or altered.

  • A professional licence or membership

    Awarding and professional bodies seal licences and membership certificates so anyone can check a member's standing is genuine and current.

  • A CPD or completion record

    Course and CPD certificates issued in bulk, each carrying its own proof — verifiable by an employer or regulator without contacting the provider.

Live proofs are real documents sealed under the “Let’s Seal Examples” organisation.

Common documents

What you’ll seal

  • Degree certificates
  • Transcripts
  • Diplomas
  • Professional licences
  • Enrolment letters
  • CPD records
  • Membership certificates
Questions

Straight answers

Can I issue thousands of certificates at once?
Yes. Upload a CSV of the cohort and Let's Seal generates a branded, sealed, timestamped certificate for each, emailed with a proof link. One import, the whole graduating class.
How does an employer check a qualification?
They open the proof link or scan the QR on the certificate. It confirms the credential is genuine, unaltered, and issued by you — instantly, and free, with no call to your office.
What if a credential is revoked or expires?
You can mark a credential revoked or set an expiry; the proof page shows it honestly. The seal still proves it was genuinely issued and unaltered — the status sits alongside it.
Does the graduate need an account or app?
No. They get a normal PDF certificate that opens anywhere, plus a proof link and QR that anyone can verify against the public portal.

Start sealing education & credentials documents

Free and open. Seal in the app, automate from the CLI, and hand anyone a proof they can verify themselves.

Open the app All use cases