Bitshares Music Blockchain
= used by PeerTracks
"It is a decentralized autonomous company (DAC) that specializes in music. A blockchain allows for strangers to achieve consensus without the need to put their trust in a third party. It is a peer 2 peer network. No one owns it, no one controls it, no one can shut it down or prevent anyone from using it. This means you do not need to trust PeerTracks with your funds. We hold no funds! All is done on blockchain which no entity can control.
This specific blockchain is a ledger that knows who has what, who is sending what to whom, who is selling, who is buying, etc. It matches everyone’s needs automatically. Basically everything done by PeerTracks is made possible by this technology." (http://peertracks.com/faq.html)