ISRC
OPTIMISTIC
Last verified:
The ISRC for “OPTIMISTIC” is QZFZ31937595. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC. The underlying musical work is ISWC T9303730269.
Credit Chain
QZFZ31937595 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “OPTIMISTIC”. ISRCs are 12-character alphanumeric codes defined by ISO 3901, used globally by streaming platforms, record labels, and rights organizations to track plays and distribute royalties.
This recording is linked to the musical work T9303730269, which represents the underlying composition. Multiple recordings can share the same musical work — for example, an original version, a remix, and a cover would each have their own ISRC but reference the same ISWC.
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The ISRC for “OPTIMISTIC” is QZFZ31937595. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC. The underlying musical work is ISWC T9303730269.
