From the article, investigation technique of the infringement of copyright which RIAA makes clear, this investigation technique probably will put out those which are released in order to oppose to the judgment of a certain woman, is. Identity of the woman who shares nearly 1,000 tunes with Internet was opposed RIAA which it tries to specify (the All-American Record Industry Association of America), that woman caused judgment. As for the woman being yourself, you insist that it is something which you recorded from CD which it purchases it is, but releasing investigation technique it seems that reaches the point of in order to prove the fact that this is not fact.
According to the same document, when the past of the music file where RIAA is a computer of the woman is investigated, because the file sharing service which the American nap star corporation did at one time (decision of the Copyright Act violation comes out, you say that end) the digital fingerprint was detected in 2001.
RIAA the library of the digital fingerprint, “hash” and, has used fragment of the information which was imbedded to secret in the many MP3 music file which is called “the meta data” tag for investigation, so is. For example if “hash” is used, going back the individual MP3 music file which is exchanged with the nap star, to 2000 May, it can specify.