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

Overview

Brevis Vera is an end-to-end media authenticity verification system that allows anyone to verify whether a published image or video originates from a genuine device and to edit content only in a provable, compliant, and legitimate manner. Vera combines hardware-backed C2PA certification with zero-knowledge proofs generated during editing processes driven by Brevis Pico zkVM, ensuring content authenticity from capture through every edit to final publication. Currently, Brevis Vera is officially live.

Trust Crisis

Millions of images and videos are shared online every day, 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.

In response, the most straightforward approach 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 a never-ending cycle where detection is always a step behind.

Understanding Brevis Vera

Brevis Vera adopts 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 a real device capturing a real-world event, and that every subsequent edit is 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. Increasingly, device manufacturers support C2PA, which allows devices to encrypt-sign media content at the moment of capture, binding the content to hardware and generating tamper-evident source metadata.

This addresses the first question: Was it 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 raw, unprocessed footage.

The Editing Gap

Journalists crop images, creators blur faces, editors hide privacy information, and adjust exposure and colors. Subtitles and annotations are added, and all content is compressed for faster loading on mobile devices.

These edits are legitimate and necessary. However, 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 the two.

Zero-Knowledge Proofs for Editing

This is where Brevis Vera’s core innovation comes in.

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 mathematical proof that can demonstrate three things:

• 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 cryptographic proof that the content “originates from the real world” throughout the editing process, while also preserving the privacy of the original material 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 undergone legitimate, provable edits and transformations.

Now Available

Brevis Vera is officially launched today. The initial version integrates an open-source image editing library and supports a range of common transformation operations.

We are currently engaging with several mainstream consumer image and video editing applications, planning to integrate Vera directly into widely used creative tools. Additionally, we have open-sourced the Vera reference implementation 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.