FLINT

Artifact Verifier

Verify the record before you trust the result.

Paste a signed FLINT artifact or compact JWS. The signature is checked in your browser against FLINT's public key, and tampered payloads fail closed.

Verifier Guarantees

Public key check

Validates against FLINT JWKS.

Browser local

No payload is sent back to FLINT.

Fail closed

Any modified value breaks the signature.

Press Ctrl+Enter or Cmd+Enter to verify.

How to Use

  1. 01

    Run a verification

    Go to the Demo page and click RUN FLINT VERIFICATION. Wait for the verification sequence to complete.

  2. 02

    Click Verify ↗ (one click)

    On the demo's SIGNED VERIFICATION RECORD card, click Verify ↗. You land here with the record already filled in and the signature already checked — no copy/paste. The green Signature Valid badge appears automatically.

  3. 03

    Or paste a record you received

    To verify a record someone else sent you, paste the full exported FLINT artifact JSON or a raw compact JWS string (it starts with eyJ) into the field above, then click VERIFY SIGNATURE.

  4. 04

    Try tampering with it

    After a successful verification, modify any value in the pasted JSON — change a verdict, alter an amount, or flip a single character — then click VERIFY SIGNATURE again. FLINT will reject it. This is the tamper-evidence guarantee.