International Standard Recording Code
The International Standard Recording Code (ISRC) is an international standard code for uniquely identifying sound recordings and music video recordings. The code was developed by the recording industry in conjunction with the ISO technical committee 46, subcommittee 9 (TC 46/SC 9), which codified the standard as ISO 3901 in 1986, and updated it in 2001.
An ISRC identifies a particular recording, not the work (composition and lyrical content) itself. Therefore, different recordings, edits, and remixes of the same work should each have their own ISRC. Works are identified by ISWC. Recordings remastered or revised in other ways should be assigned a new ISRC. 
ISO 3901 was completed in 1986. In 1988, the IFPI recommended that its member companies adopt ISRCs for music videos. In 1989, the ISO designated the IFPI as the registration authority for ISRCs. The IFPI, in turn, delegated part of the administration of ISRCs to several dozen national agencies, which allocate ISRCs to both record companies and individuals. The national agencies began assigning ISRCs for music videos in August 1989.
The Japanese recording industry began encoding ISRCs on audio CDs in November 1989. The IFPI and the Recording Industry Association of America (RIAA) then developed detailed recommendations for this practice, and for ISRC assignment in general. The IFPI adopted the recommendations in March 1991 and they went into effect for IFPI members on 1 January 1992.
ISRC codes are always 12 characters long, in the form "CC-XXX-YY-NNNNN". The hyphens are not part of the ISRC code itself, but codes are often presented that way in print to make them easier to read. The four parts are as follows:
- "CC" is the appropriate two-character country code for the ISRC issuer. The code is assigned according to the ISO 3166-1-Alpha-2 standard. (High demand for ISRCs within the United States has caused the supply of available registrant codes to become exhausted; after December 6, 2010, new registrants in the US use country code "QM". The codes "CP" and "DG" are reserved for further overflow, and "ZZ" is reserved for codes assigned by the International ISRC Agency. Further additions continue to be made.)
- "XXX" is a three character alphanumeric registrant code of the ISRC issuer. This number by itself does NOT uniquely identify the ISRC issuer as the same 3-digit number may be used in various countries for different issuers. To uniquely identify an issuer, the country code and registrant code should be used together.
- "YY" represent the last two digits of the reference year – the year that the ISRC was assigned to the recording. This is not necessarily the date the recording was made.
- "NNNNN" is a 5-digit number that identifies the particular sound or video recording, unique within the scope of the reference year.
Embedding ISRC in filesEdit
The most common file formats that ISRC codes can be embedded into presently are MP3, M4A, AAC, FLAC, and WAV for audio. For video ISRCs, embedding is generally performed on MP4 or M4V files. Embedding ISRCs into individual files for online distribution differs from embedding ISRCs onto a CD. The Red Book standard recommends to embed ISRCs onto CDs. The two types of ISRC embedding are not generally interchangeable and should be done separately.
The provision of ISRCs is overseen by appointed national ISRC agencies. These national ISRC agencies issue codes directly to the public and may also utilize authorized ISRC Managers to issue ISRCs. In the United States, the appointed agency is RIAA. ISRC codes can be obtained in large blocks directly from RIAA for an administrative fee ($95 at time of this publication), in quantities as little as 1 from ISRC.com ($2-$5), or in conjunction with other music-related services from other authorized ISRC managers. In territories where there is no national ISRC agency, users can obtain ISRC codes directly from IFPI or from ISRC.com and Quansic.
- Amazon Standard Identification Number (ASIN), a 10-character alphanumeric unique identifier assigned by Amazon.com and its partners for product identification within the Amazon organization
- International Standard University Code, higher educational institution verification
- Global Release Identifier (GRid), a unique identifier for musical releases
- International Article Number or EAN-13 (also known as European Article Number) the Media Catalog Number code stored on an audio CD
- International Standard Book Number (ISBN), a similar unique identifier for books
- International Standard Musical Work Code (ISWC), a unique identifier for musical works such as songs
- Universal Product Code (UPC), Universal Product Code
- Label Code a unique 4-digit or 5-digit music label identification code that is assigned by Gesellschaft zur Verwertung von Leistungsschutzrechten [de] (GVL).
- "Resources – ISRC – Handbook (incorporating the ISRC Practical Guide) s321" (PDF).
- ISRC Bulletin 2015/01 – Validating an ISRC
- "Archive — International Standard Recording Code". isrc.ifpi.org.
- "ISRC Embedding Guide —". ISRC.com.
- "List of Approved ISRC Managers". Recording Industry Association of America. Retrieved April 15, 2014.
- "- PPL". www.ppluk.com. Retrieved 2020-08-19.
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