Kaztake Takeuchi
type: MusicGroup
genre: j-rap
genre: j-r&b
popularity: 3
followers: 464
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x273a018437df062bf389f91815a0003a4bc45eb9d4fd94118991ed0d792ff715
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f46b69b9-7a09-4c68-9413-20691b3ed118.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f46b69b9-7a09-4c68-9413-20691b3ed118.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f46b69b9-7a09-4c68-9413-20691b3ed118
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x273a018437df062bf389f91815a0003a4bc45eb9d4fd94118991ed0d792ff715","name":"Kaztake Takeuchi","registered_at":"2026-06-21T14:58:21Z","symbol":"NIM1954191","token_address":"0xb2bf6737cff6f63a37983cd0cb383323d6235b4b","type":"artist","uuid":"f46b69b9-7a09-4c68-9413-20691b3ed118"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273a018437df062bf389f91815a0003a4bc45eb9d4fd94118991ed0d792ff715. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f46b69b9-7a09-4c68-9413-20691b3ed118.json and https://artists.proofprofile.net/proofs/artist/f46b69b9-7a09-4c68-9413-20691b3ed118.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x273a018437df062bf389f91815a0003a4bc45eb9d4fd94118991ed0d792ff715","name":"Kaztake Takeuchi","registered_at":"2026-06-21T14:58:21Z","symbol":"NIM1954191","token_address":"0xb2bf6737cff6f63a37983cd0cb383323d6235b4b","type":"artist","uuid":"f46b69b9-7a09-4c68-9413-20691b3ed118"}
album: UNDER THE WILLOW -PANDA-
  type: MusicAlbum
  date published: 2008-12-03
album: UNDER THE WILLOW -ICHIGO-
  type: MusicAlbum
  date published: 2008-12-03
album: Don't Cry To Me
  type: MusicAlbum
  date published: 2013-06-12
album: UNDER THE WILLOW -RAIN-
  type: MusicAlbum
  date published: 2013-06-19
album: UNDER THE WILLOW -BLEND-
  type: MusicAlbum
  date published: 2014-09-03
album: HOVIT ep
  type: MusicAlbum
  date published: 2016-02-10
album: Hot Water Pressure Washer
  type: MusicAlbum
  date published: 2016-04-13
album: Hot Water Pressure Washer
  type: MusicAlbum
  date published: 2016-04-13
album: UNDER THE WILLOW brought to light (2021 streaming edition)
  type: MusicAlbum
  date published: 2017-12-07
album: UNDER THE WILLOW brought to light (2021 streaming edition)
  type: MusicAlbum
  date published: 2017-12-07
album: UNDER THE WILLOW disclosure
  type: MusicAlbum
  date published: 2017-12-08
album: the 3
  type: MusicAlbum
  date published: 2020-05-13
album: the 3
  type: MusicAlbum
  date published: 2020-05-13
album: the 3
  type: MusicAlbum
  date published: 2020-05-13
album: NICE DREAM feat. TARO SOUL
  type: MusicAlbum
  date published: 2020-06-10
album: Let you know how huge this world is feat.岩崎慧
  type: MusicAlbum
  date published: 2021-01-06
album: Let you know how huge this world is feat.岩崎慧
  type: MusicAlbum
  date published: 2021-01-06
album: Tomb
  type: MusicAlbum
  date published: 2021-02-10
album: Tomb
  type: MusicAlbum
  date published: 2021-02-10
album: Movin’ on again feat.KO-ney + 岩崎慧
  type: MusicAlbum
  date published: 2021-03-31
album: Movin’ on again feat.KO-ney + 岩崎慧
  type: MusicAlbum
  date published: 2021-03-31
album: One Love
  type: MusicAlbum
  date published: 2021-04-21
album: One Love
  type: MusicAlbum
  date published: 2021-04-21
album: Right Next Door to HEAVEN
  type: MusicAlbum
  date published: 2021-06-30
album: Right Next Door to HEAVEN
  type: MusicAlbum
  date published: 2021-06-30
album: blueprint substitute for streaming
  type: MusicAlbum
  date published: 2022-07-08
album: UNDER THE WILLOW nowhere to go (SIDE B)
  type: MusicAlbum
  date published: 2022-07-08
album: UNDER THE WILLOW nowhere to go (SIDE A)
  type: MusicAlbum
  date published: 2022-07-08
album: アグロー案内VOL.1
  type: MusicAlbum
  date published: 2022-07-30
album: アグロー案内VOL.2
  type: MusicAlbum
  date published: 2022-08-27
album: アグロー案内VOL.3
  type: MusicAlbum
  date published: 2022-10-29
album: アグロー案内VOL.4
  type: MusicAlbum
  date published: 2023-02-25
album: アグロー案内VOL.5
  type: MusicAlbum
  date published: 2023-05-05
album: アグロー案内VOL.6
  type: MusicAlbum
  date published: 2023-09-15
album: Coffee Story
  type: MusicAlbum
  date published: 2023-11-22
album: Loved You
  type: MusicAlbum
  date published: 2023-12-06
album: MAGIC NUMBER
  type: MusicAlbum
  date published: 2023-12-20
album: アグロー案内VOL.7
  type: MusicAlbum
  date published: 2024-07-07
album: アグロー案内VOL.8
  type: MusicAlbum
  date published: 2024-11-15
album: GOOD GROOVE MAN
  type: MusicAlbum
  date published: 2025-05-01
album: アグロー案内VOL.9
  type: MusicAlbum
  date published: 2025-07-02
album: Sweet good memory
  type: MusicAlbum
  date published: 2025-09-24
  track: Sweet good memory
    type: MusicRecording
    duration: PT5M17S
    duration ms: 317260
    explicit: false
    by artist: Kaztake Takeuchi
    in album: Sweet good memory
      type: MusicAlbum
      date published: 2025-09-24
    genre: j-rap
    genre: j-r&b
    isrc code: JP92L2505640
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T22:46:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xacd8af40a3d596d0b51bb34d12c60a665b1c6778b2f4642cb2f1d67ad6d6a5e8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958943
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958943
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92L2505640
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T01:48:37Z
    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
    audio: Sweet good memory
album: Missing U
album: Let me drink on a party
album: FADE AWAY

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd8af40a3d596d0b51bb34d12c60a665b1c6778b2f4642cb2f1d67ad6d6a5e8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:37Z), 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/JP92L2505640.
date published: 2026-07-21T01:48:37Z

Sweet good memory
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 146.092
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.545
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.583
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.12
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.441
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.329
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Missing U
type: MusicAlbum
date published: 2025-10-08

Let me drink on a party
type: MusicAlbum
date published: 2025-10-22

FADE AWAY
type: MusicAlbum
date published: 2025-11-05