<human>:  Was a person sold a Creative Commons License for Boticelli's The Birth of Venus ripped off?
<bot>: Yes, a person who was sold a Creative Commons License for Boticelli's The Birth of Venus was probably ripped off. A Creative Commons license allows for the free distribution of an otherwise copyrighted piece of work. Works that are deemed in the public domain do not require a copyright or permission to use. Any work created before 1923 is in the public domain. The Birth of Venus painting.