The lead single off of BTS's "Proof" will be an original song called "Yet to Come (The Most Beautiful Moment)." The song title seemingly calls back to BTS's "HYYH: The Most Beautiful Moment in Life/Youth" era, a trilogy of albums they released from April 2015 to September 2016. The single artwork is a blue and white gradient with white lines of different sizes that create a wispy, cloud-like version of BTS's shield logo.