> ## Documentation Index
> Fetch the complete documentation index at: https://docs.musixmatch.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Lyric Fingerprint API

The Lyric Fingerprint API uses its comprehensive database of millions of lyrics and advanced search technology to provide a powerful text-matching service. This enables platforms to **detect potential copyrighted musical material** at scale.

<Callout icon="circle-chevron-right" color="#FC532E">
  Want to integrate Lyric Fingerprint API into your app? [Contact us](mailto:apisupport@musixmatch.com?subject=Sentinel%20integration%20request)
</Callout>

In today's generative AI landscape, platforms face the critical challenge of identifying copyrighted material in user-generated text. Lyric Fingerprint acts as a key component, allowing platforms to proactively flag potential copyright concerns and significantly strengthen their compliance strategies. More information on the [Sentinel website](https://sentinel.musixmatch.com?utm_source=docs\&utm_medium=web\&utm_content=site_link).

Through a simple `POST` request to the `track.lyrics.fingerprint.post` endpoint, developers can submit any text containing at least 10 words and receive a ranked list of matching tracks from the Musixmatch catalog. The `size` parameter impacts the API performance and latency. It controls the number of candidate lyrics retrieved for comparison against your input. It is set to 10 by default with a maximum of 20, allowing platforms to balance between detection accuracy and processing efficiency. The `limit` parameter defines how many of the top matching tracks to return in the response.

```JSON theme={null}
{
  "data": {
    "text": "Was dressed to the nines And we were dancing, dancing Like we're made of starlight, starlight nLike we're made of starlight, starlight"
  }
}
```

> Each `track` response property includes detailed metadata about the matched track, such as `track_name`, `artist_name`, `album_name` and `primary_genres`. The same data you would get from a `track.get` endpoint. The `similarity` score instead, indicates how closely the input text matches the lyrics of the track, with higher values representing a closer match.

```JSON theme={null}
{
  "track_list": [
    {
      "similarity": 99.23664122137404,
      "track": {
        "track_id": 226270199,
        "track_isrc": "USUG12103675",
        "commontrack_isrcs": [
            [
                "USUG12103675"
            ]
        ],
        "track_spotify_id": "7A2cNLRT0YJc1yjxHlKihs",
        "track_name": "Starlight (Taylor's Version)",
        "track_rating": 60,
        "track_length": 220,
        "commontrack_id": 135756858,
        "instrumental": 0,
        "explicit": 0,
        "has_lyrics": 1,
        "has_subtitles": 1,
        "has_richsync": 1,
        "num_favourite": 16,
        "album_id": 47387431,
        "album_name": "Red (Taylor's Version)",
        "artist_id": 259675,
        "artist_name": "Taylor Swift",
        "album_coverart_100x100": "http://s.mxmcdn.net/images-storage/albums/nocover.png",
        "album_coverart_350x350": "",
        "album_coverart_500x500": "",
        "album_coverart_800x800": "",
        "track_share_url": "https://www.musixmatch.com/lyrics/Taylor-Swift/Starlight-Taylor-s-Version?utm_source=application&utm_campaign=api&utm_medium=individual%3A1409626377500",
        "track_edit_url": "https://www.musixmatch.com/lyrics/Taylor-Swift/Starlight-Taylor-s-Version/edit?utm_source=application&utm_campaign=api&utm_medium=individual%3A1409626377500",
        "restricted": 0,
        "updated_time": "2021-11-16T05:26:09Z",
        "primary_genres": {
            "music_genre_list": [
                {
                    "music_genre": {
                        "music_genre_id": 14,
                        "music_genre_parent_id": 34,
                        "music_genre_name": "Pop",
                        "music_genre_name_extended": "Pop",
                        "music_genre_vanity": "Pop"
                    }
                }
            ]
        }
      }
    }
  ]
}
```

<Callout icon="circle-chevron-right" color="#FC532E">
  Want to integrate Lyric Fingerprint API into your app? [Contact us](mailto:apisupport@musixmatch.com?subject=Sentinel%20integration%20request)
</Callout>