Articles
In-depth explainers on content provenance, sigstore, and open verification.
The Global Race to Label AI Content
The EU, California, and China are all mandating AI content labeling by mid-2026. C2PA Content Credentials are emerging as the technical standard for compliance.
The Nikon Z6 III Incident: What Camera Signing Vulnerabilities Teach Us
In September 2025, a security researcher bypassed the Nikon Z6 III's C2PA signing to authenticate an AI-generated image. The incident reveals hard truths about hardware-based content provenance.
C2PA 2.3: Live Video, New Formats, and the Path to ISO
The C2PA specification reached version 2.3 in February 2026, adding live video streaming support and expanded format coverage. Meanwhile, the standard is on an ISO fast-track.
From Code to Content: Sigstore's Expanding Reach
Sigstore now secures npm packages, PyPI distributions, Maven artifacts, and NVIDIA AI models. The same infrastructure is ready for media content.
What Is Content Provenance?
An introduction to content provenance — why knowing who created media, when, and whether it has been modified matters more than ever.
How Sigstore Works: A Primer for Media
Sigstore revolutionized code signing with keyless, transparent verification. Here is how the same model applies to photos, videos, and digital content.
C2PA and the Future of Content Authenticity
The Coalition for Content Provenance and Authenticity (C2PA) is defining how media carries proof of its origins. Here is what the standard covers and where it is headed.