Chapter I
Three-line integration.
One API. No forced SDK, no heavy dependency. Your AI outputs become signed in a single curl.
POST /v1/sign · JSON · multipart
Infrastructure · C2PA · EU · California
Authenticity, as a building block of infrastructure.
A cryptographic C2PA attestation for every piece of AI-generated content. One API call. EU AI Act and CAITA compliance, as of August 2, 2026.
Compatible withC2PAAdobeMicrosoftOpenAI
Chapters · I · II · III
One promise, three guarantees.
Built like a state archive: minimal integration, open standard, native compliance.
Chapter II
The standard, not a new one.
Attestaria is built on C2PA, adopted by Adobe, Microsoft, OpenAI. Your attestations can be verified anywhere — without us.
C2PA · open verification
Chapter III
Ready for the AI Act.
Article 50 kicks in on August 2, 2026. You don’t have six months to build this in-house. We already did.
Art. 50 · EU standards · hosted in the EU
Process · I · II · III
Three steps. Nothing more.
Send. Sign. Prove. The rest — timestamping, chain of trust, compliance — is our craft.
A file.
One API call, with your file attached. Image, video, document — doesn’t matter.
request
# sign one asset POST /v1/sign file=@output.png claim={"gen":"gpt-image-1"}
A cryptographic signature.
We generate a C2PA attestation: timestamped, tamper-proof, sealed to European cryptographic standards.
manifest · c2pa
urnc2pa:attestaria:9e4c…a81
signed_at2026-04-21T10:42Z
signerattestaria-eu · eIDAS QTSP
algoEd25519 · SHA-256
A proof, everywhere.
The signed file is verifiable by Microsoft, by a regulator, by a competitor — without us.
verified · third party
Authenticity confirmed · Content Credentials · Microsoft
manifest match · sha-256 verified · Apr 21, 2026
Not a developer?
Attestaria is coming to the tools you already use. WordPress, Shopify, Canva — and more. Tell us where you publish — we’ll get back to you at launch.
— Errataf. 42 v.
Where you already work.
You don’t write curl. You publish on WordPress, sell on Shopify, create on Canva. We’ll be there — and compliance will follow the file, not the other way round.
Just tell us your platform. We’ll reach out at launch, no bait-and-wait.
Roadmap · launches
- WordPressQ3 2026Plugin for automatic signing of generated images and articles.
- ShopifyQ3 2026E-commerce app to attest AI product visuals.
- CanvaQ4 2026Native integration for creators and digital agencies.
- WebflowRoadmap 2027CMS connector for editorial production.
- NotionRoadmap 2027Attestation of AI content exports generated in the workspace.