ProvSeal

ProvSeal

Changelog

Shipped updates for the Chrome extension, Desktop beta and public site.

Desktop 0.1.0 Beta

ProvSeal Desktop beta for macOS

First public Desktop beta for pilot testers: local sign and verify on device. Builds are unsigned — on macOS use right-click → Open on first launch.

  • macOS Apple Silicon and Intel DMGs with SHA-256 checksums
  • Download and install notes on /desktop
  • Windows and Linux builds when CI runners are available
Website Site

Product pages, Trust and pricing refresh

Public site updated to match the product story: free Extension, Desktop for on-premise workflows, Console with Desktop pilot.

  • New /extension, /desktop and /console product pages
  • Security, Privacy and Limitations rewritten for local-first boundaries
  • Pricing simplified to Extension + Desktop (Console noted with Desktop)
  • Roadmap milestones updated for Extension → Desktop → Console
0.1.5 Extension · Current

TrustMark compliance and Firefox packaging

Chrome release 0.1.5. Firefox store build uses technical version 0.1.5.1 (same product version_name) after AMO review feedback.

  • Removed the unused ProvSeal Desktop native-messaging integration and its elevated permission
  • Added reproducible Firefox and Mozilla source packages for AMO review
  • Replaced the obfuscated Adobe TrustMark BCH helper with reviewable TypeScript
  • Removed dynamic code evaluation from the TrustMark decoder for Mozilla compliance
0.1.4 Extension

ProvSeal rename, About screen and TrustMark

Renamed from C2PA Signer to ProvSeal / ProvSeal because “C2PA” is a trademark of the Coalition for Content Provenance and Authenticity (C2PA™). Same C2PA Content Credentials workflows — only the product name changes.

  • About screen with product identity, logo and release highlights
  • Firefox: dedicated file workflow tab when the popup file picker is limited
  • Adobe TrustMark invisible watermark detection in verification reports
  • Optional remote sync of C2PA trust lists from conformance-public on GitHub
0.1.3 Extension

Store packaging preparation

  • Packaging and store-asset preparation ahead of the ProvSeal release
  • Firefox validation build submitted to Mozilla Add-ons for review
0.1.2 Extension

Local PDF signing

  • Local PDF signing alongside JPEG and PNG (up to 25 MB in the extension)
  • PDF verification and signing use the same C2PA manifest workflow as images
0.1.0 Extension

Initial public extension

  • C2PA verification for JPEG, PNG, PDF, MP4, MOV and WebM via the official C2PA WASM SDK
  • Local signing for JPEG and PNG with test identity or PKCS#12 import
  • Detailed reports with engine context, signing trust list and TSA trust list
  • Manual page scan and optional automatic scan with explicit host permission
  • Unified status labels: Verified, Signed, Invalid and No C2PA

Get the latest

Install the free Chrome extension (0.1.5), or try Desktop beta on macOS.

Install extension Desktop beta Roadmap