Kassy
type: MusicGroup
genre: k-ballad
genre: k-pop
genre: soundtrack
description: Kim So-yeon (; born October 6, 1995), known by the stage name Kassy (), is a South Korean singer-songwriter. Since her debut in 2015, she has released five extended plays and numerous singles. In 2016
popularity: 46
followers: 108538
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T21:20:00Z
album: In My Bed
  type: MusicAlbum
  date published: 2015-08-25
album: Ooh Ooh Ooh
  type: MusicAlbum
  date published: 2015-11-30
album: Hug Me
  type: MusicAlbum
  date published: 2016-03-18
  track: Hug Me
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204005
    explicit: false
    by artist: Kassy
    in album: Hug Me
      type: MusicAlbum
      date published: 2016-03-18
    genre: k-ballad
    genre: k-pop
    genre: soundtrack
    isrc code: KRA381600416
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-05T04:47:21Z
    audio: Hug Me
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album: Dream
  type: MusicAlbum
  date published: 2017-01-26
album: KBS2 Drama Fight For My Way OST Part.2 (Soundtrack)
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  date published: 2017-05-29
  track: Good Morning(Inst.)
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      date published: 2017-05-29
    genre: k-ballad
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    genre: soundtrack
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-19T12:24:55Z
    audio: Good Morning(Inst.)
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album: Cho young soo All star - Kassy, Basick
album: The Bride of Habaek 2017 (Original Tv Soundtrack) Part 3
album: The Bride of Habaek 2017 (Original Television Soundtrack), Pt. 3
album: Let it rain
album: Listen to this song
album: I want love
album: Your memory
album: Wok of love OST Part.5
album: 기름진 멜로 (Original Television Soundtrack) Pt. 5
album: 기름진 멜로 OST Part.5
album: Let's Eat! 3 (Original Television Soundtrack), Pt. 7
album: Let′s Eat! 3 : Begins, Pt. 7 (Original Television Soundtrack)
album: Webtoon YEONNOM OST Part.1
album: The day was beautiful
album: True Song
album: Rewind
album: Chocolate, Pt.6 (Original Television Soundtrack)
album: Chocolate, Pt. 6 (Original Television Soundtrack)
album: Chocolate,Pt.6(Original Television Soundtrack)
album: When love comes by
album: TOCK TOCK
album: Memories of Autumn
album: Teik Chit Dal Takhin Yel
album: START-UP (Original Television Soundtrack) Pt. 15
album: bimil:ier Vol. 2 "Waiting for Spring"
album: bimil:ier vol.2 "Waiting for Spring"
album: I will light your way (Prod. Cho Young Soo)
album: [Vol.99] You Hee yul's Sketchbook : 63th Voice 'Sketchbook X Kassy(Prod.Cho Young Soo)'
album: MY ROOMMATE IS A GUMIHO, Pt. 5 (Original Television Soundtrack)
album: MY ROOMMATE IS A GUMIHO (Original Television Soundtrack) Pt.5
album: MY ROOMMATE IS A GUMIHO OST Part.4
album: Hometown Cha-Cha-Cha, Pt. 2 (Original Television Soundtrack)
album: You are falling all night
album: Old story
album: Cho YoungSoo Remake Project Part.2
album: LOVE & HATE
album: Alchemy of Souls, Pt. 2 (Original Television Soundtrack)
album: FOREVER LOVE
album: Cold Day
album: Crush on you
album: Only You
album: Trip: playlist (Original Television Soundtrack), Pt.3
album: CASTAWAY DIVA OST Part.7
album: Full Bloom
album: Reunion Counseling (Original Soundtrack), Pt.5
track: Our Story (feat. Kassy)
track: 날 사랑한 처음의 너로 돌아와
track: Twinkle Star (feat. Kassy)
track: 날 사랑한 처음의 너로 돌아와 (Inst.)
track: A song from the past
track: Fool Like Me (feat. Kassy)
track: I'll Pray For You
track: Aching
track: One Sunny Day
track: A song from the past (Inst.)
track: I'll Pray For You (Inst.)

Our Story (feat. Kassy)
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duration: PT3M16S
duration ms: 196308
explicit: false
by artist: Hwang Chi Yeul
by artist: SEULGI
by artist: Kassy
in album: Fall, in girl Vol.3
  type: MusicAlbum
  date published: 2017-02-21
popularity: 16
isrc code: KRNAR1701078
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Our Story (feat. Kassy)
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    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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날 사랑한 처음의 너로 돌아와
type: MusicRecording
duration: PT3M36S
duration ms: 216266
explicit: false
by artist: Kassy
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  date published: 2020-12-12
popularity: 9
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:53:57Z
audio: 날 사랑한 처음의 너로 돌아와
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Twinkle Star (feat. Kassy)
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duration: PT4M4S
duration ms: 244349
explicit: false
by artist: WOO JIN YOUNG
by artist: Kim hyun soo
by artist: Kassy
in album: Present
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  date published: 2018-06-14
popularity: 2
isrc code: KRA381800026
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:20:19Z
audio: Twinkle Star (feat. Kassy)
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날 사랑한 처음의 너로 돌아와 (Inst.)
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZF452010944
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54077da52cb6e64f8d148b3e036fa6929c85954b7d5860e05763dbb5a4f94f69. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZF452010944.
  date published: 2026-07-08T03:22:41Z
audio: 날 사랑한 처음의 너로 돌아와 (Inst.)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.052
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.443
  additional property: Energy
    type: PropertyValue
    value: 0.474
  additional property: Speechiness
    type: PropertyValue
    value: 0.026
  additional property: Acousticness
    type: PropertyValue
    value: 0.465
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.114
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.125
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.659
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

A song from the past
type: MusicRecording
duration: PT3M55S
duration ms: 235293
explicit: false
by artist: Solar
by artist: Kassy
in album: A song from the past
  type: MusicAlbum
  date published: 2020-01-16
genre: k-pop
isrc code: KRA382000000
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T18:38:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d104fcd4da0d946a6f0a40776ed1cd0d8135df37b4172a5b9147d22e51cd229
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382000000
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953515
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d104fcd4da0d946a6f0a40776ed1cd0d8135df37b4172a5b9147d22e51cd229. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382000000.
  date published: 2026-06-13T17:25:41Z
audio: A song from the past
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.411
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.451
  additional property: Energy
    type: PropertyValue
    value: 0.768
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.716
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.288
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.326
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.705
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Fool Like Me (feat. Kassy)
type: MusicRecording
duration: PT4M59S
duration ms: 299693
explicit: false
by artist: Babylon
by artist: Kassy
in album: EGO 90'S
  type: MusicAlbum
  date published: 2022-07-19
genre: korean-r-b
genre: k-rap
isrc code: KRB462200818
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:34:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x350b5c424ecc8f55c3bc3e4e446beb917a77ca1861d74632e2c2356cc5531f21
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957050
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957050
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB462200818
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:41:13+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957050
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T14:41:13+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350b5c424ecc8f55c3bc3e4e446beb917a77ca1861d74632e2c2356cc5531f21. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB462200818.
  date published: 2026-07-07T14:50:41Z
audio: Fool Like Me (feat. Kassy)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.013
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.464
  additional property: Energy
    type: PropertyValue
    value: 0.509
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.618
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.1
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.426
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

I'll Pray For You
type: MusicRecording
duration: PT3M10S
duration ms: 190506
explicit: false
by artist: Kassy
in album: CASTAWAY DIVA Original Sound Track
  type: MusicAlbum
  date published: 2023-12-05
isrc code: KRA382321649
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T22:26:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c3d6bd36490df60030a3a17e966bee54d999576e97141b877c15b78543ca7ce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382321649
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d6bd36490df60030a3a17e966bee54d999576e97141b877c15b78543ca7ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382321649.
  date published: 2026-07-02T03:30:09Z
audio: I'll Pray For You
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.407
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.487
  additional property: Energy
    type: PropertyValue
    value: 0.465
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.494
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.184
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.83
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Aching
type: MusicRecording
duration: PT4M11S
duration ms: 251000
explicit: false
by artist: Kassy
in album: Alchemy of Souls (Original Television Soundtrack)
  type: MusicAlbum
  date published: 2022-08-28
isrc code: KRA492200579
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T06:42:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a7f0b3b579bb6bd509c826d8b967cf921f03827c7b0c4576d572b08483f9e91
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA492200579
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953515
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f0b3b579bb6bd509c826d8b967cf921f03827c7b0c4576d572b08483f9e91. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA492200579.
  date published: 2026-06-13T17:25:41Z
audio: Aching
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.25
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.367
  additional property: Energy
    type: PropertyValue
    value: 0.294
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.875
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.219
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.607
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

One Sunny Day
type: MusicRecording
duration: PT3M56S
duration ms: 236597
explicit: false
by artist: Kassy
in album: Hometown Cha-Cha-Cha (Original Television Soundtrack)
  type: MusicAlbum
  date published: 2021-10-18
isrc code: KRA492100876
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T16:25:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd359fa0059c550f584911aaeacd9bf2dfc5484528eb986ed99a72900c277f4c8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA492100876
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953515
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd359fa0059c550f584911aaeacd9bf2dfc5484528eb986ed99a72900c277f4c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA492100876.
  date published: 2026-06-13T17:25:41Z
audio: One Sunny Day
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 164.241
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.57
  additional property: Energy
    type: PropertyValue
    value: 0.79
  additional property: Speechiness
    type: PropertyValue
    value: 0.066
  additional property: Acousticness
    type: PropertyValue
    value: 0.585
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.129
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.503
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.727
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

A song from the past (Inst.)
type: MusicRecording
duration: PT3M55S
duration ms: 235293
explicit: false
by artist: Solar
by artist: Kassy
in album: A song from the past
  type: MusicAlbum
  date published: 2020-01-16
genre: k-pop
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd402259920e3ab78679390d92a4e3d92402913c8b46c4a9c91c40eb0044528fd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382000001.
  date published: 2026-07-30T04:47:22Z
audio: A song from the past (Inst.)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.49
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.536
  additional property: Energy
    type: PropertyValue
    value: 0.658
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.1
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.071
  additional property: Liveness
    type: PropertyValue
    value: 0.292
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.231
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.727
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: KRA382000001
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960207
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T04:47:22+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382000001
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960207
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960207
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T04:47:22+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

I'll Pray For You (Inst.)
type: MusicRecording
duration: PT3M10S
duration ms: 190493
explicit: false
by artist: Kassy
in album: CASTAWAY DIVA Original Sound Track
  type: MusicAlbum
  date published: 2023-12-05
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc81e570105177ffcc04b99d1b0049b8a28fa5ece064c3c7cd6679e51b91b59. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382321650.
  date published: 2026-07-29T21:09:47Z
audio: I'll Pray For You (Inst.)
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Energy
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Speechiness
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Cho young soo All star - Kassy, Basick
type: MusicAlbum
date published: 2017-07-05
track: See you in heaven
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  duration: PT3M43S
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  explicit: false
  by artist: Kassy
  in album: Cho young soo All star - Kassy, Basick
    type: MusicAlbum
    date published: 2017-07-05
  genre: k-ballad
  genre: k-pop
  genre: soundtrack
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89ecd812ebc9fc223042b09f6d8f08d5ee7c41fbbfb3455858771e3a1f52b4a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB471700941.
    date published: 2026-07-05T18:48:28Z
  audio: See you in heaven
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    additional property: Acousticness
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    additional property: Valence (Positivity)
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The Bride of Habaek 2017 (Original Tv Soundtrack) Part 3
type: MusicAlbum
date published: 2017-07-17

The Bride of Habaek 2017 (Original Television Soundtrack), Pt. 3
type: MusicAlbum
date published: 2017-07-17

Let it rain
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date published: 2017-08-25
track: Let it rain
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  explicit: false
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    type: MusicAlbum
    date published: 2017-08-25
  genre: k-ballad
  genre: k-pop
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc5066b751a44932a648fb58b6c793f88692e80bf4b85dae05549a0a62645a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381702030.
    date published: 2026-07-03T21:18:05Z
  audio: Let it rain
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Listen to this song
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date published: 2017-11-19
track: Listen to this song (lnst.)
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    type: MusicAlbum
    date published: 2017-11-19
  genre: k-ballad
  genre: k-pop
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a79f387935e4cce5cb821926787a173ddc32a812743014bf52a69025bf36f26. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381702685.
    date published: 2026-07-05T01:43:49Z
  audio: Listen to this song (lnst.)
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    additional property: Danceability
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I want love
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date published: 2018-01-18
track: I want love
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  genre: k-ballad
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745c140c60e1b68c1e169fd91048c6b3cee2f255625689f94d5594416912a7e8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381703071.
    date published: 2026-07-04T11:19:20Z
  audio: I want love
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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Your memory
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date published: 2018-04-26
track: Your memory
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  genre: k-ballad
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-12T20:39:38Z
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Wok of love OST Part.5
type: MusicAlbum
date published: 2018-06-11

기름진 멜로 (Original Television Soundtrack) Pt. 5
type: MusicAlbum
date published: 2018-06-11

기름진 멜로 OST Part.5
type: MusicAlbum
date published: 2018-06-11

기름진 멜로 (Original Television Soundtrack) Pt. 5
type: MusicAlbum
date published: 2018-06-11

Let's Eat! 3 (Original Television Soundtrack), Pt. 7
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date published: 2018-08-29

Let′s Eat! 3 : Begins, Pt. 7 (Original Television Soundtrack)
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date published: 2018-08-29

Webtoon YEONNOM OST Part.1
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date published: 2018-09-18
track: Take My Hand (Inst.) (Instrumental)
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  genre: k-ballad
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  subject of: OpenTimestamps Proof of Existence
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The day was beautiful
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True Song
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Rewind
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Chocolate, Pt.6 (Original Television Soundtrack)
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Chocolate, Pt. 6 (Original Television Soundtrack)
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Chocolate,Pt.6(Original Television Soundtrack)
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When love comes by
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TOCK TOCK
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Memories of Autumn
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Teik Chit Dal Takhin Yel
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START-UP (Original Television Soundtrack) Pt. 15
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START-UP (Original Television Soundtrack) Pt. 15
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bimil:ier Vol. 2 "Waiting for Spring"
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bimil:ier Vol. 2 "Waiting for Spring"
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bimil:ier vol.2 "Waiting for Spring"
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I will light your way (Prod. Cho Young Soo)
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[Vol.99] You Hee yul's Sketchbook : 63th Voice 'Sketchbook X Kassy(Prod.Cho Young Soo)'
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MY ROOMMATE IS A GUMIHO, Pt. 5 (Original Television Soundtrack)
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MY ROOMMATE IS A GUMIHO (Original Television Soundtrack) Pt.5
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MY ROOMMATE IS A GUMIHO OST Part.4
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MY ROOMMATE IS A GUMIHO, Pt. 5 (Original Television Soundtrack)
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Hometown Cha-Cha-Cha, Pt. 2 (Original Television Soundtrack)
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  subject of: OpenTimestamps Proof of Existence
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You are falling all night
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-16T10:58:20Z
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Old story
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Cho YoungSoo Remake Project Part.2
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LOVE & HATE
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Alchemy of Souls, Pt. 2 (Original Television Soundtrack)
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FOREVER LOVE
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Crush on you
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Trip: playlist (Original Television Soundtrack), Pt.3
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CASTAWAY DIVA OST Part.7
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Full Bloom
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Reunion Counseling (Original Soundtrack), Pt.5
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No Gain No Love, Pt. 2 (Original Soundtrack)
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DNA Lover (Original Television Soundtrack) Pt. 6
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Like a Piece of Art
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Never Melt Away
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The potato lab, Pt. 3 (Original Soundtrack)
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Nextar Project
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