ISRC
Last verified:
One ISRC for “Witness” by Katy Perry is USUM71704975. 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. Released 2017-01-01. The underlying musical work is ISWC T-921759827-1. Written by KATHERYN ELIZABETH HUDSON, ALI PAYAMI, SAVAN HARISH KOTECHA, and others.
Credit Chain
USUM71704975 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Witness” by Katy Perry. 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 T-921759827-1, 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.
Learn more about ISRCs · Powered by Notes.fm
Identifier Graph
MLC Song Code
One ISRC for “Witness” by Katy Perry is USUM71704975. 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. Released 2017-01-01. The underlying musical work is ISWC T-921759827-1. Written by KATHERYN ELIZABETH HUDSON, ALI PAYAMI, SAVAN HARISH KOTECHA, and others.
