What is an ISRC and how do they work?
The International Standard Recording Code (ISRC) is an international standard code for uniquely identifying sound recordings and music video recordings. An ISRC is a code that gets embedded as data into your song. It works as virtual identification and is a bit like a barcode. Without an ISRC your song could played for free in areas which would otherwise entitle you to royalties. You should use the same ISRC code for your digital and physical distribution.