Constantinople Records is an upstart record label created by Billy Corgan of The Smashing Pumpkins. Little is known about the label and no official website or company exists. The US Patent Office's website listed the label as being trademarked by Corgan. When word of the label was made public, a domain name was registered but no website ever appeared. After one year the URL had expired.
The label was ultimately created to release the album by The Smashing Pumpkins: "Machina II/The Friends & Enemies of Modern Music" and the EPs that were associated with it, because Corgan's relationship with Virgin Records had deteriorated. Virgin had refused to release Machina and Machina II as a double album, and when Machina sold poorly, refused entirely to release the sequel. Since the band was breaking up at the time, Corgan decided to release Machina II for free download on the internet. Only twenty-five vinyl copies were pressed, and were shipped via FedEx to several prominent fans in the online community, with instructions to immediately redistribute it on the Internet free of charge.
It was rumored that this label would support all future releases for work done by Billy Corgan. However, starting in 2003 he began publishing work under the label "Martha's Music," with distribution by Reprise Records.