LetsSeal

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 the blockchain, 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
Blockchain 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 blockchain, 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 the blockchain, 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 the blockchain · 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 the blockchain

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