X-ModalProof: Real-Time Interpretable Ownership Verification for Multimodal AI Models

X-ModalProof is a real-time interpretable ownership verification system for multimodal and edge-deployed AI models, designed to address the intellectual property protection issues of AI models. It provides deterministic watermark training and verification processes, supports modalities like text, and features interpretability (providing reasons for verification decisions) and real-time verification capability on edge devices. It solves the shortcomings of existing watermarking schemes and facilitates scenarios such as model copyright protection and traceability.

With the popularization of AI technology, the issue of model intellectual property protection has become prominent. Well-trained models consume a lot of resources, but weight files are easy to copy and distribute, and traditional software copyright methods have limited effectiveness. Model watermarking technology has emerged, but existing schemes face challenges such as lack of interpretability in verification, limited support for multimodality, and difficulty in real-time operation on edge devices.

The core technologies of X-ModalProof include: 1. Deterministic configuration and random seed management, ensuring the training and verification process is fully reproducible to support legal forensics; 2. Watermark training and verification cycle for text modality, embedding watermarks through specific strategies, with verification based on signature vector construction and cosine similarity calculation; 3. An interpretability component that can provide human-understandable explanations for verification decisions, facilitating applications in legal scenarios.

The system adopts a layered design with a clear code structure: the configs directory stores configurations for different operation modes (smoke/debug/full), src contains core code, scripts provide entry points for training and evaluation, and tests include unit tests, etc. The training process is executed via train.py, which automatically saves configuration snapshots and signature vectors to ensure traceability; evaluation is performed via eval.py, which loads signature vectors and threshold values for verification, and outputs JSON/CSV results for easy analysis.

The current implementation focuses on text modality, but the architecture reserves extension interfaces for images and multimodality; it supports real-time verification on edge devices, adapting to resource-constrained environments through compact signature vectors and efficient cosine calculation; the architecture includes an adversarial attack module (in scaffolding state) to test the robustness of watermarks against attacks like fine-tuning and quantization.

X-ModalProof is applicable to: 1. Model copyright protection, providing ownership proof by embedding watermarks in models; 2. Model traceability, tracking the source and circulation path of models; 3. Compliance auditing, where enterprises audit whether the AI models used infringe on rights; 4. Copyright check on edge devices, where app stores/MDM systems perform real-time verification of AI component watermarks on the device side.

Current limitations include incomplete support for images and multimodality, adversarial attack testing in scaffolding state, and unspecified details of the interpretability component. Future directions: complete the implementation of image modality, develop a stronger adversarial robustness test suite, optimize edge verification performance, and explore integration with model market platforms.

X-ModalProof is a significant progress in the field of AI model intellectual property protection. It provides a technically feasible watermarking scheme, solving the pain points of existing solutions through features like interpretability, determinism, and real-time verification. It is of great value to practitioners and researchers concerned with AI ethics, intellectual property, and model security.