基于智能合约的编码级视频安全存证方案  

Smart contract-based encoding-level video copyright notarization scheme

作　　者：郭冉 王奎 徐衍胜 张守军 潘晓刚 佟雨镪 王京 何云华[1] 焦泽政 Guo Ran;Wang Kui;Xu Yansheng;Zhang Shoujun;Pan Xiaogang;Tong Yuqiang;Wang Jing;HeYunhua;Jiao Zezheng(College of Information,North China University of Technology,Beijing 100144,China;Taiyuan Rail Transit Line 1 Construction&Operation Co.,Ltd.,Taiyuan 030032,China;Shanxi Junyue Maike Information Security Technology Co.,Ltd.,Taiyuan 030082,China)

机构地区：[1]北方工业大学信息学院,北京100144 [2]太原轨道交通一号线建设运营有限公司,太原030032 [3]山西军跃迈科信息安全技术有限公司,太原030082

出　　处：《计算机应用研究》2025年第1期28-35,共8页Application Research of Computers

基　　金：国家自然科学基金资助项目(62272007,U23B2002)。

摘　　要：H.264/H.265视频压缩技术推动了短视频应用行业的蓬勃发展,但与此同时,视频安全与版权纠纷问题也日益凸显。现有的版权存证方法存在版权验证方信任缺失、验证流程不透明、视频溯源困难等问题。针对这些问题,提出了一种基于智能合约的编码级视频安全存证方案。利用H.264/H.265编码特性设计版权信息嵌入方法,将版权所有者信息作为水印在视频编码时嵌入。在保证水印鲁棒性和安全性的同时,减少嵌入信息对视频质量的影响;同时借助区块链和智能合约技术,规范身份存证、版权验证和纠纷处理等流程,增强流程执行的可信度和透明性。实验结果表明,在进行视频版权存证时采用的相似度对比算法的F 1分数相比现有的最优方案增长了大约2%,证明其性能的优越性;另一组实验证实了智能合约的开销处于合理水平,确保其在实际应用中的可行性。The short video application market has grown quickly due to the H.264/H.265 video compression technology.However,copyright conflicts and video security concerns have gained more attention as a result of this expansion.The current copyright notarization systems are plagued by issues with video traceability,opaque verification processes,and a lack of trust in the verification parties.This paper presented a smart contract-based encoding-level video security notarization technique as a solution to these problems.This strategy created a way to include copyright information by using the encoding properties of H.264/H.265 and inserting the copyright owner’s information as a watermark during the video encoding process.The encoded information had a minimal effect on the quality of the video while guaranteeing the watermark’s durability and security.Furthermore,it standardized the processes of identity notarization,copyright verification,and dispute settlement through the use of blockchain and smart contract technology,which raised the legitimacy and transparency of the execution process.According to experimental results,the similarity comparison algorithm employed for video copyright notarization performs better than the current best solution,with a F 1-score that has grown by about 2%.Another test demonstrates that smart contracts have a manageable overhead,indicating their viability in real-world uses.

关 键 词：智能合约 版权存证 视频编码 区块链 数字水印 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]