Answer:
copyright
Step-by-step explanation:
Analyzing the information provided by the question, it is ideal for the artist to protect his original oil paintings from being sold as original prints by requesting a copyright.
This is a legally guaranteed way for artists, scientists and scholars to protect their intellectual property from fraudulent reproductions that do not grant them due copyrights.
Therefore, copyright motivates individuals to produce intellectual content relevant to society, with the certainty that the author's rights will be maintained, even after the death of the creator, copyright guarantees the security of rights after 50 to 100 years.