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  3. QZRP42173402
WE USED TO KNOW album cover

ISRC

QZRP42173402

WE USED TO KNOW

matched

Last verified: February 19, 2026

QZRP42173402 is the International Standard Recording Code (ISRC) for the recording “WE USED TO KNOW”. 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 T0101630867.

Format

QZCountry
RP4Registrant
21Year (2021)
73402Designation
Country:
ISO 3166-1 alpha-2 country code (QZ).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2021):
Last two digits of the reference year (2021). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCWE USED TO KNOW
ISWCWE USED TO KNOW

Musical Work (ISWC)

T0101630867WE USED TO KNOW

Credits Graph

MLC Song Code

S06778
Verify on MLC Portal →
SourcesMLC

Verified on

  • MusicBrainz recording record
  • MLC song record

People also ask

What is the ISRC for "WE USED TO KNOW"?+
The ISRC for "WE USED TO KNOW" is QZRP42173402.
What is an ISRC and what does it tell you?+
An ISRC (International Standard Recording Code) is a 12-character ISO 3901 identifier that uniquely tags a specific sound recording. The first two characters are the country code, the next three are the registrant (label or distributor), the next two are the year, and the last five are a unique recording number.
Is the ISRC the same as the ISWC?+
No. The ISRC identifies a specific recording, while the ISWC identifies the underlying musical composition. QZRP42173402 is the ISRC for this recording; T0101630867 is the ISWC for the composition it is a recording of. One composition (ISWC) can have many recordings (ISRCs) — originals, remixes, live versions, and covers each get their own ISRC but share the same ISWC.

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What is ISRC QZRP42173402?

QZRP42173402 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “WE USED TO KNOW”. 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 T0101630867, 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

QZRP42173402 is the International Standard Recording Code (ISRC) for the recording “WE USED TO KNOW”. 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 T0101630867.

Related

Other versions of this workView all on iswc.fm

WE USED TO KNOWATR981205724
WE USED TO KNOWCA5KR0029996
WE USED TO KNOWDES562411751
WE USED TO KNOWDETU71800196
WE USED TO KNOWDEZC62116855