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Learn about VerITAS, a groundbreaking system that uses zero-knowledge proofs to verify image authenticity and provenance at unprecedented scale in this 31-minute conference talk. Discover how this innovative approach addresses the critical challenge of verifying that published images have only undergone legitimate edits from their original signed versions, particularly important for news media integrity. Explore the technical breakthrough that enables proof generation for realistically large images up to 30 megapixels - more than an order of magnitude larger than previous work - through a novel proof system design that can handle massive amounts of witness data. Examine the practical performance metrics showing proof generation times of just over three minutes for 90 MB images with powerful signers (costing $0.13 on AWS) or thirteen minutes with computationally weak signers like cameras (costing $0.54 on AWS), while maintaining sub-second verification times. Understand how this system builds upon the Coalition for Content Provenance and Authenticity (C2PA) standard while solving the fundamental problem that original photo signatures cannot be verified after editing. Gain insights into the broader applications of these techniques for proving correct transformations of large amounts of signed private data beyond image processing.
