Tracking the evolution of the ProvSeal extension and website. A record of our commitment to transparency, security and local-first verification.
V0.1.4
Current extension release
ProvSeal 0.1.4 — new name and product updates
This extension was previously called C2PA Signer. It is now ProvSeal, because “C2PA” is a trademark of the Coalition for Content Provenance and Authenticity (C2PA™). ProvSeal continues to use the C2PA standard for Content Credentials — only the product name changes.
New ProvSeal name and logo
Updated branding across the extension to ProvSeal while keeping the same C2PA Content Credentials workflows.
About screen
Version number and release notes are available from the About screen.
Adobe TrustMark watermark detection
Local detection of invisible Adobe TrustMark watermarks, in addition to C2PA verification. This is not cryptographic proof.
Improved Firefox file selection
Smoother file-pick flow under Firefox when choosing media from the extension.
Trust and packaging updates
Fixes and updates for trust lists and packaging.
V0.1.3
Previous extension release
Firefox support and local PDF signing
0.1.3 — Firefox build submitted for Mozilla review, local PDF signing, improved file pick & downloads on Firefox, updated trust lists.
Firefox support
Firefox build submitted to Mozilla Add-ons for review. The Firefox version includes local file verification, page scanning, C2PA report inspection and test-signing workflows adapted to Firefox.
PDF signing
Sign PDFs locally with your test or imported identity (JPEG/PNG signing unchanged).
Smoother verify & sign UI
Clearer status, trust summaries, and resume of your selected file after picking on Firefox.
Downloads on Firefox
Signed files download correctly with blob-based downloads.
Updated C2PA trust lists
Refreshed signing and TSA anchors.
V0.1.2
Website update
Website, trust and workflow clarity
This update focuses on website positioning, trust language, demo documentation and workflow clarity for teams evaluating ProvSeal.
New Security & Trust page
Centralized explanation of local-first processing, C2PA statuses, permissions and trust boundaries.
Trust status labels
Consistent wording for Trusted, Signed but untrusted, Invalid and No credentials across the website.
Local-first positioning
Refined copy to clarify that verification and signing are designed to run locally, without uploading files to a ProvSeal backend.
Structured docs
Updated docs, limitations, demo, privacy and legal pages for clearer evaluation workflows.
V0.1
Initial public site
Initial extension website
The foundation of the ProvSeal public presence, with the first product pages for users and technical evaluators.
Landing page
Public website introducing ProvSeal and Content Credentials workflows.
Store install link
Direct install path for the browser extension listing.
Legal and privacy core
Contact, Privacy Policy and Legal Notice pages added for basic publication readiness.
Basic demo page
Early page-scanning demo for showing badges and C2PA report behavior.
