The re3 sampling royalty license territory is worldwide and the term is in perpetuity. The license is non-exclusive, meaning multiple licenses can be issued without restriction by other licensees. The license 1) specifies the credit payment due immediately upon download, 2) permission to sample the master (sound) and use the derivative work without approval from its original creators, 3) a royalty as a percentage of revenue from any derivative works to be paid via the re3 Royalty Manager, 4) a directive to upload the derivative work / new sound back to re3 and link it to the original sampled sound. It is possible that the download fee or the royalty is zero, depending on what the creator specified in the minting process. It is important to note that this license is for the master, not the composition (any melody or lyric) that may be contained within. If you are licensing a song or stem that contains a composition copyright, you are granted permission to sample that composition but the derivative composition will be wholly owned by the original writers, not you. You will only own the master. Please consult a lawyer for a definitive understanding of the license language.