Ku
type: MusicGroup
description: Ku, KU, or Kū may refer to: Arts and entertainment Ku (fictional language), a constructed language created for the 2005 film The Interpreter Esther Ku, a Korean-American comedian Shawn Ku, U.S. ch
popularity: 6
followers: 237
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67591238a333a0d3372a45fa6054dece649094264c7aa4472650348430d08da9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bcb71db5-972a-41f5-a9c0-f402bb87969e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bcb71db5-972a-41f5-a9c0-f402bb87969e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bcb71db5-972a-41f5-a9c0-f402bb87969e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
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 0x67591238a333a0d3372a45fa6054dece649094264c7aa4472650348430d08da9. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcb71db5-972a-41f5-a9c0-f402bb87969e.json and https://artists.proofprofile.net/proofs/artist/bcb71db5-972a-41f5-a9c0-f402bb87969e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
album: Before The Hype
  type: MusicAlbum
  date published: 2007-01-01
  track: KU Da King
    type: MusicRecording
    duration: PT3M28S
    duration ms: 208426
    explicit: false
    by artist: Ku
    in album: Before The Hype
      type: MusicAlbum
      date published: 2007-01-01
    isrc code: USL4Q0758144
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T21:51:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6aa0e5b69e1bb7f363ac55f9915bf4b5d3a050e69eabaa68d06c11d34f2cb410
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958074
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958074
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q0758144
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T22:45:25Z
    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 0x6aa0e5b69e1bb7f363ac55f9915bf4b5d3a050e69eabaa68d06c11d34f2cb410. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USL4Q0758144.
      date published: 2026-07-14T22:45:25Z
    audio: KU Da King
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.773
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.43
      additional property: Energy
        type: PropertyValue
        value: 0.753
      additional property: Speechiness
        type: PropertyValue
        value: 0.25
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.126
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.492
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.381
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Pressure
  type: MusicAlbum
  date published: 2007-02-08
album: Feathers
  type: MusicAlbum
  date published: 2013-03-26
album: Ganja
  type: MusicAlbum
  date published: 2017-03-13
album: Ima Go Ku
  type: MusicAlbum
  date published: 2018-08-15
album: Трезвый рассудок
  type: MusicAlbum
  date published: 2021-06-06
album: Старый кассетник
  type: MusicAlbum
  date published: 2021-08-01
album: Остров
  type: MusicAlbum
  date published: 2021-08-18
album: Грань реальности
  type: MusicAlbum
  date published: 2021-10-08
album: Freshman
  type: MusicAlbum
  date published: 2021-11-21
album: Критика
  type: MusicAlbum
  date published: 2022-02-19
album: Амазонка
  type: MusicAlbum
  date published: 2022-03-07
album: Сильные черты
  type: MusicAlbum
  date published: 2022-03-20
album: Бир
  type: MusicAlbum
  date published: 2022-05-17
album: Fly High
  type: MusicAlbum
  date published: 2022-08-01
album: Fly High
  type: MusicAlbum
  date published: 2022-08-01
  track: Fly High
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210555
    explicit: false
    by artist: Ku
    in album: Fly High
      type: MusicAlbum
      date published: 2022-08-01
    isrc code: TCJPS2259712
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T22:28:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb8fe529602580b535ef94ab4b5a0c9cabc6c216298aa238f024ab199cd2a22cb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958335
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958335
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPS2259712
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T22:37:47Z
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Fly High
album: Iino.
album: いいの。
album: Kaikiaijyo
album: Eden
album: Краснодар
album: Kam.chat.ka
album: aoitominami
album: 〜日本一周ふたり旅〜あおいとみなみ

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe529602580b535ef94ab4b5a0c9cabc6c216298aa238f024ab199cd2a22cb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCJPS2259712.
date published: 2026-07-16T22:37:47Z

Fly High
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 108.044
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: 0.558
additional property: Energy
  type: PropertyValue
  value: 0.803
additional property: Speechiness
  type: PropertyValue
  value: 0.071
additional property: Acousticness
  type: PropertyValue
  value: 0.132
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.154
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.376
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.293
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Major

Iino.
type: MusicAlbum
date published: 2023-02-11

いいの。
type: MusicAlbum
date published: 2023-02-11

Kaikiaijyo
type: MusicAlbum
date published: 2024-09-28

Eden
type: MusicAlbum
date published: 2025-02-22

Краснодар
type: MusicAlbum
date published: 2025-03-19

Kam.chat.ka
type: MusicAlbum
date published: 2025-04-09

aoitominami
type: MusicAlbum
date published: 2025-07-18

〜日本一周ふたり旅〜あおいとみなみ
type: MusicAlbum
date published: 2025-07-18