YOOK SUNGJAE
type: MusicGroup
genre: k-ballad
popularity: 34
followers: 78334
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4fdf0e067facc545108413a848efa6687d52101b4550ee46a64ae04185c33975
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4fdf0e067facc545108413a848efa6687d52101b4550ee46a64ae04185c33975","name":"YOOK SUNGJAE","registered_at":"2026-06-12T00:41:50Z","symbol":"NIM0145489","token_address":"0xecb6032a26278aa0bf59e699e2808188d1243596","type":"artist","uuid":"6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdf0e067facc545108413a848efa6687d52101b4550ee46a64ae04185c33975. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33.json and https://artists.proofprofile.net/proofs/artist/6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x4fdf0e067facc545108413a848efa6687d52101b4550ee46a64ae04185c33975","name":"YOOK SUNGJAE","registered_at":"2026-06-12T00:41:50Z","symbol":"NIM0145489","token_address":"0xecb6032a26278aa0bf59e699e2808188d1243596","type":"artist","uuid":"6f8b678c-69c1-4b5e-b0c9-a82d1ade0e33"}
album: Plus Nine Boys (Original Television Series Soundtrack), Pt. 4
  type: MusicAlbum
  date published: 2014-09-25
album: Plus Nine Boys (Original Television Series Soundtrack), Pt. 4
  type: MusicAlbum
  date published: 2014-09-25
album: Who Are You : School 2015 (Original Television Soundtrack), Pt. 8
  type: MusicAlbum
  date published: 2015-06-16
album: Scholar Who Walks the Night (Pt. 3; Original Soundtrack)
  type: MusicAlbum
  date published: 2015-07-30
album: Scholar Who Walks The Night (Original Television Soundtrack) - Pt. 3
  type: MusicAlbum
  date published: 2015-07-30
album: The Sweetest Love
  type: MusicAlbum
  date published: 2016-04-16
  track: The Sweetest Love
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203653
    explicit: false
    by artist: YOOK SUNGJAE
    in album: The Sweetest Love
      type: MusicAlbum
      date published: 2016-04-16
    genre: k-ballad
    isrc code: KRA391600018
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T15:52:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x840a3b4530bbd441fef7bc04816e732229daa3a2368de37be41aea3d72ef7918
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA391600018
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a3b4530bbd441fef7bc04816e732229daa3a2368de37be41aea3d72ef7918. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA391600018.
      date published: 2026-07-05T19:27:56Z
    audio: The Sweetest Love
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.037
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.689
      additional property: Energy
        type: PropertyValue
        value: 0.582
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.253
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.072
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.813
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.94
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Piece of BTOB Vol.6
  type: MusicAlbum
  date published: 2017-08-30
  track: TELL ME
    type: MusicRecording
    duration: PT4M19S
    duration ms: 259253
    explicit: false
    by artist: YOOK SUNGJAE
    in album: Piece of BTOB Vol.6
      type: MusicAlbum
      date published: 2017-08-30
    genre: k-ballad
    isrc code: KRA391700044
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T17:40:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x40a4782ae6238331260cc605710c706444f67e7779fca07b20da136e40251005
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA391700044
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a4782ae6238331260cc605710c706444f67e7779fca07b20da136e40251005. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA391700044.
      date published: 2026-07-03T19:59:51Z
    audio: TELL ME
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 70.127
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.538
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Paradise
album: Your BGM Vol.2
album: 3X2=6 Project Part 1
album: 3X2=6 Project Part 2
album: 3X2=6 Project Part 3
album: YOOK O'clock
album: Mystic Pop-up Bar Pt.2 (Original Television Soundtrack)
album: EXHIBITION : Look Closely
album: LIE
album: All About Blue
track: Love Song
track: 1, 2, 3
track: Follow your dreams

Energy
type: PropertyValue
value: 0.432

Speechiness
type: PropertyValue
value: 0.025

Acousticness
type: PropertyValue
value: 0.642

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.099

Valence (Positivity)
type: PropertyValue
value: 0.342

Loudness (dB)
type: PropertyValue
value: -5.189

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Paradise
type: MusicRecording
duration: PT3M47S
duration ms: 227861
explicit: false
by artist: YOOK SUNGJAE
in album: Piece of BTOB Vol.6
  type: MusicAlbum
  date published: 2017-08-30
genre: k-ballad
isrc code: KRA391700045
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x05bbe29d147fe443ded8ab65988ce43558e559c3532c9ef0fb390ae781f618be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958383
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958383
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA391700045
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T08:20:01Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bbe29d147fe443ded8ab65988ce43558e559c3532c9ef0fb390ae781f618be. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/KRA391700045.
  date published: 2026-07-17T08:20:01Z
audio: Paradise
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 173.969
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.555
  additional property: Energy
    type: PropertyValue
    value: 0.914
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.102
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.204
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.856
  additional property: Loudness (dB)
    type: PropertyValue
    value: -2.806
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Piece of BTOB Vol.6
type: MusicAlbum
date published: 2017-08-30
track: Paradise
  type: MusicRecording
  duration: PT3M47S
  duration ms: 227861
  explicit: false
  by artist: YOOK SUNGJAE
  in album: Piece of BTOB Vol.6
    type: MusicAlbum
    date published: 2017-08-30
  genre: k-ballad
  isrc code: KRA391700045
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T17:33:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x05bbe29d147fe443ded8ab65988ce43558e559c3532c9ef0fb390ae781f618be
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957891
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957891
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA391700045
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T18:21:04Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bbe29d147fe443ded8ab65988ce43558e559c3532c9ef0fb390ae781f618be. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRA391700045.
    date published: 2026-07-13T18:21:04Z
  audio: Paradise
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 173.981
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.554
    additional property: Energy
      type: PropertyValue
      value: 0.913
    additional property: Speechiness
      type: PropertyValue
      value: 0.069
    additional property: Acousticness
      type: PropertyValue
      value: 0.101
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.203
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.857
    additional property: Loudness (dB)
      type: PropertyValue
      value: -2.806
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Your BGM Vol.2
type: MusicAlbum
date published: 2018-09-06

3X2=6 Project Part 1
type: MusicAlbum
date published: 2019-12-29
track: Yook
  type: MusicRecording
  duration: PT3M54S
  duration ms: 234853
  explicit: false
  by artist: YOOK SUNGJAE
  in album: 3X2=6 Project Part 1
    type: MusicAlbum
    date published: 2019-12-29
  genre: k-ballad
  isrc code: KRA391900043
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T18:25:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa75f2563f75f2c97e63b4838b4261d5ec9e43f16125bd4272dfec0c6f871a694
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA391900043
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f2563f75f2c97e63b4838b4261d5ec9e43f16125bd4272dfec0c6f871a694. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA391900043.
    date published: 2026-07-05T19:27:56Z
  audio: Yook
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 125.922
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.519
    additional property: Energy
      type: PropertyValue
      value: 0.565
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.648
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.1
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.279
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.098
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: From Winter
  type: MusicRecording
  duration: PT4M5S
  duration ms: 245653
  explicit: false
  by artist: YOOK SUNGJAE
  in album: 3X2=6 Project Part 1
    type: MusicAlbum
    date published: 2019-12-29
  genre: k-ballad
  isrc code: KRA391900042
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T22:08:21+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x17de582ebcb0f09deb01f69a402fcef77b74edc432623c10ebd14a9c78e15603
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959069
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959069
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA391900042
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T22:32:59Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-21T22:32:59Z
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3X2=6 Project Part 2
type: MusicAlbum
date published: 2020-01-16

3X2=6 Project Part 3
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date published: 2020-02-06
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-20T12:00:34Z
  audio: HMHN
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YOOK O'clock
type: MusicAlbum
date published: 2020-03-02

Mystic Pop-up Bar Pt.2 (Original Television Soundtrack)
type: MusicAlbum
date published: 2020-06-04

EXHIBITION : Look Closely
type: MusicAlbum
date published: 2024-05-09

LIE
type: MusicAlbum
date published: 2025-05-06

All About Blue
type: MusicAlbum
date published: 2025-06-19

Love Song
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duration: PT3M25S
duration ms: 205143
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by artist: YOOK SUNGJAE
by artist: Park Hye Soo
in album: Who Are You: School 2015 (Original Television Soundtrack)
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popularity: 34
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Love Song
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1, 2, 3
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duration: PT3M26S
duration ms: 206829
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by artist: LEECHANGSUB
by artist: Lim Hyunsik
by artist: YOOK SUNGJAE
in album: THIS IS US
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popularity: 27
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: 1, 2, 3
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Follow your dreams
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duration: PT4M31S
duration ms: 271588
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by artist: SEO EUNKWANG
by artist: LEECHANGSUB
by artist: Lim Hyunsik
by artist: YOOK SUNGJAE
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by artist: CHOI YUJIN
by artist: CHANG SEUNGYEON
by artist: SORN
by artist: ELKIE
by artist: KWON EUNBIN
by artist: JINHO
by artist: Hui
by artist: Hong Seok
by artist: Shin Won
by artist: Yeo One
by artist: YANAN
by artist: KINO
by artist: YOO SEONHO
by artist: MIYEON
by artist: MINNIE
by artist: SOOJIN
by artist: YUQI
by artist: SHUHUA
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popularity: 21
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Follow your dreams
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