>>4042630Proven is usually an adjective (e.g., a proven formula), and proved is usually the inflected form of the verb prove (e.g., I proved it; I have proved it). This is not a rule, though, and exceptions abound, especially in American English, where proven is often used as a participial inflection of the verb. For example, where a British writer is likely to write I have proved you wrong, an American writer might write I have proven you wrong.
