If the first CD is 'The Chronicle of BTS,' The second CD was composed so that you can understand why BTS, who have been running together for 9 years, respecting each other's tastes and colors shines. In particular, the songs on the second CD were selected by the seven members themselves.

The second CD of 'Proof' includes the new song 'Run Bangtan', 'Intro: Persona', 'Stay', 'Moon', 'Jamais Vu', 'Trivia: Seesaw', 'BTS Cypher PT.3: KILLER', 'Outro: Ego', 'Her' , 'Filter', 'Friend', 'Singularity', '00:00 (Zero O'Clock)', 'Euphoria', 'Dimple', etc. 7 members separately and together It contains a total of 15 songs that harmonize with each other.

BTS will release an anthology album 'Proof' on June 10th, which implies 9 years of history since BTS' debut. This album, which consists of a total of three CDs, is filled with songs containing the members' thoughts about the past, present and future of BTS, and the tracklist of the third CD will be released on the 11th.