Tessera
Prove your content is what it claims to be. Sign it once. Anyone can verify it, forever.
For enterprise publishers, creative studios, and AI engineers needing mathematical proof of media origin. Tessera signs and verifies digital content so its authenticity, edits, and authorship can be verified without third-party gatekeepers. Built to meet EU AI Act Article 50 transparency requirements and C2PA standards natively. Open-source core, universally auditable, zero lock-in.
Sign once. Verify anywhere. Tamper-evident by design.
Mathematical trust for the synthetic media era.
Provenance cannot rely on goodwill or metadata tags that get stripped on upload. Tessera binds cryptographic integrity directly to the asset.
Cryptographic Tamper-Evidence
Every asset receives an Ed25519 signature bound to its content hash. Any post-hoc modification, cropping, or injection immediately invalidates the signature.
EU AI Act Article 50 Ready
Direct compliance path for European Union generative AI labeling mandates. Provide machine-readable assertions of AI origin that satisfy regulatory audits.
C2PA & Open Standards
Built directly on the Coalition for Content Provenance and Authenticity (C2PA) framework, ensuring cross-platform validation across browsers, viewers, and operating systems.
Universal Local Verification
Verification runs on the client or within your CI/CD pipeline. No mandatory SaaS dependency, no telemetry tracking, and no proprietary vendor lock-in.
Get on the Tessera waitlist.
Launching 30 September 2026. Private preview cohorts opening ahead of general release.