第三者の議論なんですが たしかつべの英文規約に >Make sure you know whether the content that you have seen on YouTube infringes your copyright. >If you are not sure what your rights are, or whether your copyright has been infringed, you should check with a legal adviser first. >Be aware that there may be adverse legal consequences in your country if you make a false or bad faith allegation of copyright infringement by using this process. >Don't make false claims!