Brevis Vera is now live: Proving "truth" in the AI era

Brevis Vera combines hardware-level C2PA signatures with zero-knowledge proofs to build an end-to-end media authenticity verification system, allowing anyone to verify whether an image or video originates from a genuine capture and has only been edited in compliant ways. This fundamentally addresses the content trust crisis in the era of deepfakes.

Overview

Brevis Vera is an end-to-end media authenticity verification system that enables anyone to verify whether published images or videos come from real devices and have been edited only in provable, compliant, and legitimate ways. Vera combines hardware-backed C2PA certification with zero-knowledge proofs generated by Brevis Pico zkVM for each editing process, ensuring content authenticity from capture through every edit to final publication. Brevis Vera is now officially live.

Trust Crisis

Millions of images and videos are shared online daily, but we have little way to verify their authenticity.

Deepfake technology has become so realistic that even trained eyes struggle to distinguish real from fake, and tools for creating such false content are rapidly spreading. As a result, people’s default reaction to eye-catching online images has shifted from curiosity to suspicion.

The most direct response to this phenomenon is to develop better detection systems: train AI models to identify AI-generated content. However, this approach has a fundamental flaw: detection is like a shooting game where the target keeps changing. As detection improves, content generation also advances, creating an endless cycle where detection is always a step behind.

Understanding Brevis Vera

Brevis Vera takes a radically different approach:

Instead of analyzing whether media content “looks real,” it enables the content itself to prove its origin and what it has undergone during dissemination.

Vera is an end-to-end verification system designed to confirm that published images or videos genuinely originate from real devices during a real-world capture event, and that subsequent edits are legitimate, verifiable, and provable.

How It Works

Starting from the Source

Brevis Vera is built on the C2PA (Coalition for Content Provenance and Authenticity) standard. More device manufacturers are now supporting C2PA. C2PA allows devices to encrypt-sign media content at the moment of capture, binding the content to hardware and generating tamper-evident source metadata.

This answers the first question: Was this captured by a real camera on a real device?

But this is just the beginning, because in the real world, the final published content is often not the raw, unprocessed original.

The Editing Gap

Photographers crop images, creators blur faces, editors cover privacy info, and adjust exposure and colors. Subtitles and annotations are added, and all content is compressed for faster mobile loading.

These edits are legitimate and necessary. But once you modify a signed image, the original hardware signature no longer applies. Even a simple crop can break the cryptographic binding between the signed file and the published version. Authenticity and editing are inherently in tension, and until now, there has been no way to unify them.

Zero-Knowledge Proofs of Editing Paths

This is the core innovation of Brevis Vera.

Vera integrates with open-source editing libraries and uses Brevis Pico zkVM to generate zero-knowledge proofs for the entire editing process. When an editor modifies media content with supported software, Vera takes the original C2PA-signed metadata and media as inputs, performs the necessary transformations, and produces a cryptographic proof that can demonstrate:

• The output content is indeed derived from the signed original;
• Only permitted transformations were applied;
• No hidden or malicious edits were introduced.

This proof is generated locally, can be independently verified by anyone, and does not require exposing the original content or editing workflow.

What Changes Will This Bring?

Brevis Vera retains a cryptographic proof that the content “originates from the real world” throughout the editing process, while also preserving the privacy of the original media and editing workflow. Verification requires no centralized intermediary, and the entire system is open source.

This means that media content can now carry a verifiable proof at the time of publication: it truly comes from reality and has only been subjected to legitimate, provable edits and transformations.

Now Available

Brevis Vera is officially launched today. The initial version integrates open-source image editing libraries and supports a range of common transformations.

We are currently engaging with several mainstream consumer image and video editing applications, planning to embed Vera directly into widely used creative tools. The reference implementation of Vera is also open-sourced on GitHub.

Want to see how it works? Try our interactive concept demo and experience Vera firsthand.

If you’re interested in trying the full version or collaborating with Brevis Vera, please contact us through the partnership form.