Author

Yulei Sui

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Preprint Jul 2026

TRACE: A Two-Channel Robust Attribution Watermark via Complementary Embeddings for LLM-Agent Trajectories

LLM agents reach users through resellers, who may rebrand a developer's agent or substitute a cheaper model. When provenance is disputed, attribution rests on the trajectory log (the record of tool calls, observations, and executed actions, not the model's reasoning), which the reseller stores and processes to meter us...

Zhengguang Gao, Xiaoyu Li, Xiaoyang Feng et al. · 1 citation

Preprint Aug 2026

SpreadMark: Robust Image Watermarking via Spread-Spectrum Embedding

SpreadMark keeps the embedded watermark imperceptible, maintaining high perceptual quality on both COCO and DIV2K, and is the only evaluated method retaining high detection under both the regeneration and the latent-space sparsification settings the authors test.

Wei Song, Yu-Xin Cao, Zhen-Chang Xing et al. · 0 citations