Copyright infringement adversely affects the interest of copyright holders of images and videos which are uploaded to different websites and peer-to-peer image sharing systems. This paper addresses the problem of detecting copyright infringement so that copyright holders are given due credit for their work. There are several images and videos that are shared every day by millions of users with some amount of modification in images and videos originally uploaded by the copyright holders such as photographers, graphic designers, and video providers. Copyright violators, who are not the original creators of multimedia content modify them using image processing and frame modification techniques such as grayscale conversion, cropping, rotation, frame compression, and frame speed manipulation. Then, upload the tampered images and videos. To address this problem, we propose an IPFS-based (InterPlanetary File System-based) decentralized peer-to-peer image and video sharing platform built on blockchain technology. We use a perceptual hash (pHash) technique to detect copyright violations of multimedia. When multimedia is to be uploaded to the IPFS, the pHash of the same content is determined and checked against existing pHash values in the blockchain network. Similarity with existing pHash values would result in the multimedia being detected as tampered with. Blockchain technology offers the advantage of non-involvement of a third party and consequently the avoidance of a single point of failure.

侵犯版权会对上传到不同网站和点对点图像共享系统的图像和视频的版权所有者的利益产生不利影响。本文解决了发现版权侵权的问题，以便版权所有者的工作受到应有的赞誉。数以百万计的用户每天都会共享一些图像和视频，并且对版权持有者（例如摄影师，图形设计师和视频提供者）最初上传的图像和视频进行了一些修改。不是多媒体内容的原始创建者的版权侵权者使用图像处理和帧修改技术（例如灰度转换，裁剪，旋转，帧压缩和帧速度操纵）来对它们进行修改。然后，上传被篡改的图像和视频。为了解决这个问题，我们提出了一个基于IPFS（基于行星际文件系统）的分散式对等图像和视频共享平台，该平台基于区块链技术构建。我们使用感知哈希（pHash）技术来检测侵犯多媒体版权的行为。当要将多媒体上载到IPFS时，将确定相同内容的pHash，并对照区块链网络中的现有pHash值进行检查。与现有pHash值的相似性将导致多媒体被检测为被篡改。区块链技术具有不涉及第三方的优势，因此避免了单点故障。