Method of inserting audio-watermark specialized for music usage and NFT and providing music source

1 . A method of inserting an audio watermark specialized for music usage and non-fungible token (NFT) and providing a music source, the method comprising:

receiving a music source download request from a user who accesses a music source providing system;

authenticating whether the user is a legitimate user;

receiving a music source usage purpose from the user when the user is the legitimate user;

inserting an audio watermark including different types of data information into the music source according to the music source usage purpose;

performing a music source download requested by the user;

detecting a usage frequency, a playback time, and a usage purpose of corresponding content in which the music source is used; and

determining a usage fee payment rate based on the usage frequency, a playback time, and a usage purpose of the detected content and paying a usage fee to an owner and an author of the music source.

2 . The method of claim 1 , wherein

the music source usage purpose includes at least one of broadcast content, game insertion, movie insertion, promotion and advertisement, and performance.

3 . The method of claim 1 , further comprising:

receiving, from the user, whether to use the music source online or offline; and

receiving a corresponding uniform resource locator (URL) address when using the music source online, and receiving address information on the music source when using the music source offline.

4 . The method of claim 1 , wherein

in the inserting of the audio watermark into the music source,

the audio watermark is inserted in 10-second units or the audio watermark is inserted in a highest frequency energy level within 10 seconds of a first playback, and

greatest energy is inserted within 5 to 10 seconds from an inserted point in time.

5 . The method of claim 1 , wherein

in the inserting of the audio watermark into the music source,

the audio watermark is inserted simultaneously in an ultra-low frequency band of 40 Hz or less and an ultra-high frequency band of 18,000 Hz or more.

6 . The method of claim 5 , wherein

the ultra-low frequency band is 20 Hz or more and the ultra-high frequency band is 20,000 Hz or less.

7 . The method of claim 1 , wherein,

in the inserting of the audio watermark into the music source,

even when the same music source is used, when music source usage purposes are different, different types of data information are stored in the audio watermark.

8 . The method of claim 1 , wherein

in the inserting of the audio watermark into the music source,

even when music source usage purposes are the same, when music sources are different from each other, different types of data information are stored in the audio watermark.

9 . The method of claim 1 , wherein

the data information includes at least one of basic music source information (a release date, an artist, an author, a performer, a playback length, and a genre) of the music source, user information (an encrypted identifier required for user authentication), use-related information (a usage approval number, a usage right expiration period, and a music usage purpose), and NFT information.

10 . The method of claim 9 , wherein

a permanent usage right is provided when a user who downloads the music source through the NFT information matches an owner.

11 . The method of claim 1 , wherein

the usage purpose indicates a purpose for which the music source is used among a title song, an ending song, and a simple back ground music (BGM).