> However, the problem is that at some point Sony lied to Youtube and claimed ownership of these songs even though they are in public domain. So there should be

> However, the problem is that at some point Sony lied to Youtube and claimed ownership of these songs even though they are in public domain. So there should be reviews or penalty for flagging copyright on someone else's works. There is no technical solution to this problem because it is not a technological problem. It is a social problem. Fascinatingly, there is a great social solution to this problem: * Monetary penalties - asserting an incorrect ownership should create a very strong bite against the entity making such assertion. Make it $500k per incident. If after 10 people upload a slightly different Bach performance that they themselves did Sony's bank accounts decreases by 5 million the erroneous assertions would as if by magic go away.