By Michael Tedder Investing in the copyrights to Bob Dylan, Sting and Red Hot Chili Peppers is a steady bet. Neil Diamond, iconic songwriter and the king of the blue jeans, is the latest artist to announce the sale of their back catalog, after reaching a deal with Universal Music Group for an undisclosed amount for his song catalog and recording rights. It’s the latest high-profile, and presumably high-value (though the details weren’t disclosed), deal for a veteran artist in recent months. Universal (UMGP) recently bought the rights to Sting’s song catalog for roughly $300 million, Sony (SNE)…