Abstract: A derivative work is encrypted using master keys generated from source data extracted from digital sources used to create the derivative work. A software application permits a mix artist to encrypt and stream a derivative work to a worldwide web server, where it is made available to consumers. A software application permits the consumers to acquire and decrypt an encrypted derivative work if the consumer has possession of a corresponding digital source for each of the digital sources used to encrypt the derivative work.

Abstract: A derivative work is encrypted using a cipher created from digital sources used to create the derivative work. A software application made available for download permits a mix artist to generate a derivative-encrypted work from a derivative work that the mix artist has created using one or more of the digital sources. The derivative-encrypted work is streamed to a worldwide web server, where it is made available for download by consumers for a fee. The software application is also available for download by the consumers and permits the consumers to purchase and download any available derivative-encrypted work. However, the derivative-encrypted works can only be decrypted if the consumer has possession of a digital source for each of the source art works associated with the digital sources used to create the derivative work.

Abstract: A derivative work discovery service facilitates discovery of derivative works by consumers who request the service from a derivative work service server. The derivative work service server uses information about digital sources available on a computer system operated by the consumer to search a derivative works database. A derivative work discovery file is compiled and presented to the consumer in a descending order of a ratio of a number of digital sources possessed by the consumer that are equivalent to digital sources used to create a derivative work to a total number of digital sources used to create that derivative work.

Abstract: A derivative work is encrypted using a cipher created from digital sources used to create the derivative work. A software application made available for download permits a mix artist to generate a derivative-encrypted work from a derivative work that the mix artist has created using one or more of the digital sources. The derivative-encrypted work is streamed to a worldwide web server, where it is made available for download by consumers for a fee. The software application is also available for download by the consumers and permits the consumers to purchase and download any available derivative-encrypted work. However, the derivative-encrypted works can only be decrypted if the consumer has possession of a digital source for each of the source art works associated with the digital sources used to create the derivative work.