Proofmark Demo Showcase

Three examples: Verified, None, and Invalid.

Mabel the cat — **Verified:** Signed with my Proofmark key.
View sidecar

Unsigned example — **None:** No proofmark file present.

Tampered example — **Invalid:** Sidecar exists but the file was changed after signing.
View sidecar

Tip: With the Proofmark extension loaded, hover the badge for signer details and a quick “View sidecar” link. Make sure your verifier is set to https://api.proofmark.app/verify (http://localhost:8787/verify for local dev), and that in the extension Options you set API URL to that endpoint and your API Key.