Kokoro Sound
type: MusicGroup
popularity: 9
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf554a3082e76d7c1bad47f2028bdb4be316a3b465f2ef5d630dcfba8e884173e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcb4363f-88e9-4811-afa1-4c655abfa741.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcb4363f-88e9-4811-afa1-4c655abfa741.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dcb4363f-88e9-4811-afa1-4c655abfa741
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf554a3082e76d7c1bad47f2028bdb4be316a3b465f2ef5d630dcfba8e884173e","name":"Kokoro Sound","registered_at":"2026-06-21T05:22:02Z","symbol":"NIM1828824","token_address":"0xe4586d14105a8f138b1ff3c76c643a824c6e5690","type":"artist","uuid":"dcb4363f-88e9-4811-afa1-4c655abfa741"}
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 0xf554a3082e76d7c1bad47f2028bdb4be316a3b465f2ef5d630dcfba8e884173e. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcb4363f-88e9-4811-afa1-4c655abfa741.json and https://artists.proofprofile.net/proofs/artist/dcb4363f-88e9-4811-afa1-4c655abfa741.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0xf554a3082e76d7c1bad47f2028bdb4be316a3b465f2ef5d630dcfba8e884173e","name":"Kokoro Sound","registered_at":"2026-06-21T05:22:02Z","symbol":"NIM1828824","token_address":"0xe4586d14105a8f138b1ff3c76c643a824c6e5690","type":"artist","uuid":"dcb4363f-88e9-4811-afa1-4c655abfa741"}
album: さよならのあとで
  type: MusicAlbum
  date published: 2025-09-05
album: Vintage Flow
  type: MusicAlbum
  date published: 2025-09-05
album: Tokyo Night Stories
  type: MusicAlbum
  date published: 2025-09-12
album: Neon Afterglow
  type: MusicAlbum
  date published: 2025-09-13
album: Slow Motion City
  type: MusicAlbum
  date published: 2025-09-13
album: Summer Groove
  type: MusicAlbum
  date published: 2025-09-13
album: Midnight Hour Stories
  type: MusicAlbum
  date published: 2025-09-14
album: Midnight Blue
  type: MusicAlbum
  date published: 2025-09-15
album: Moonlit Avenue
  type: MusicAlbum
  date published: 2025-09-16
album: Daily Vibes
  type: MusicAlbum
  date published: 2025-09-16
album: 君のいない夜
  type: MusicAlbum
  date published: 2025-09-19
album: Waves of Memory
  type: MusicAlbum
  date published: 2025-09-20
album: バターサンド 午前二時
  type: MusicAlbum
  date published: 2025-10-01
album: Soft Parade
  type: MusicAlbum
  date published: 2025-10-15
album: Voice in the Night
  type: MusicAlbum
  date published: 2025-10-15
  track: トマトスパゲティ
    type: MusicRecording
    duration: PT2M12S
    duration ms: 132919
    explicit: false
    by artist: Kokoro Sound
    in album: Voice in the Night
      type: MusicAlbum
      date published: 2025-10-15
    isrc code: QT6622543916
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T02:42:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x31d77ba1dea9f52ae2cd78f41c2d8630cef71bcc55b66a413c7afd19c05b451b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958808
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958808
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6622543916
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T05:44:31Z
    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 0x31d77ba1dea9f52ae2cd78f41c2d8630cef71bcc55b66a413c7afd19c05b451b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:31Z), 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/QT6622543916.
      date published: 2026-07-20T05:44:31Z
    audio: トマトスパゲティ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 83.115
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.772
      additional property: Energy
        type: PropertyValue
        value: 0.262
      additional property: Speechiness
        type: PropertyValue
        value: 0.096
      additional property: Acousticness
        type: PropertyValue
        value: 0.643
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.173
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.779
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.286
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Pages of Winter
  type: MusicAlbum
  date published: 2025-11-08
album: Polaris Cafe
  type: MusicAlbum
  date published: 2025-11-08
album: The Color of You
  type: MusicAlbum
  date published: 2025-11-08
album: Lights Melt Slowly
  type: MusicAlbum
  date published: 2025-11-08
album: Sleepless Frequency
  type: MusicAlbum
  date published: 2025-11-09
album: After Sunset Radio
  type: MusicAlbum
  date published: 2025-11-09
album: Seasons We Loved
  type: MusicAlbum
  date published: 2025-11-09
album: Off the Clock
  type: MusicAlbum
  date published: 2025-11-09