What are the international (“unported”) Creative Commons licenses, and why does CC offer “ported” licenses?
One of Creative Commons’ goals is ensuring that all of its legal tools work globally. To this end, CC offers a core suite of six international copyright licenses (formerly called the “unported”) that are drafted based on various international treaties governing copyright. CC offers these international licenses so that anyone, anywhere in the world can share their work on globally standard terms. Creative Commons also offers ported versions of its six, core licenses for many jurisdictions (usually jurisdiction = country, but not always). These ported licenses are based on the international license suite but have been modified to reflect any local nuances in the expression of legal terms and conditions, drafting protocols and, of course, language. The ported licenses and the international licenses are all intended to be legally effective everywhere. However, if the ported licenses in your jurisdiction have not yet been versioned to 3.0 (launched in 2007), CC recommends that you consider
