くまきち
type: MusicGroup
popularity: 11
followers: 3181
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43bba94cbfdd5a9f586f9581d02f5459ff5c83500c962020b76f05ac4b15380b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953621
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953621
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/206528eb-0e8f-4a9d-9975-dcd5aa514b89.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/206528eb-0e8f-4a9d-9975-dcd5aa514b89.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/206528eb-0e8f-4a9d-9975-dcd5aa514b89
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:42:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x43bba94cbfdd5a9f586f9581d02f5459ff5c83500c962020b76f05ac4b15380b","name":"くまきち","registered_at":"2026-06-14T07:53:23Z","symbol":"NIM0387420","token_address":"0x3d5718ac6ad98e8c2bb2abfa3884705d26105459","type":"artist","uuid":"206528eb-0e8f-4a9d-9975-dcd5aa514b89"}
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 0x43bba94cbfdd5a9f586f9581d02f5459ff5c83500c962020b76f05ac4b15380b. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/206528eb-0e8f-4a9d-9975-dcd5aa514b89.json and https://artists.proofprofile.net/proofs/artist/206528eb-0e8f-4a9d-9975-dcd5aa514b89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:42:57Z
  text: {"copyright_id":"0x43bba94cbfdd5a9f586f9581d02f5459ff5c83500c962020b76f05ac4b15380b","name":"くまきち","registered_at":"2026-06-14T07:53:23Z","symbol":"NIM0387420","token_address":"0x3d5718ac6ad98e8c2bb2abfa3884705d26105459","type":"artist","uuid":"206528eb-0e8f-4a9d-9975-dcd5aa514b89"}
album: くまきちのシーディー
  type: MusicAlbum
  date published: 2019-06-01
album: くまきちのシーディー2
  type: MusicAlbum
  date published: 2020-02-12
album: くまきちのシーディー3
  type: MusicAlbum
  date published: 2021-07-22
  track: こりないクリームソーダ
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172522
    explicit: false
    by artist: くまきち
    in album: くまきちのシーディー3
      type: MusicAlbum
      date published: 2021-07-22
    isrc code: TCJPP2100990
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T09:16:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x35692df0307967d6d99332abce2b9cc3831c76684dfe4513d17031543cc6c11a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPP2100990
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x35692df0307967d6d99332abce2b9cc3831c76684dfe4513d17031543cc6c11a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPP2100990.
      date published: 2026-07-05T10:01:46Z
    audio: こりないクリームソーダ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.528
      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: 0.656
      additional property: Energy
        type: PropertyValue
        value: 0.694
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.64
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.182
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.78
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.888
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: ロマンティックなウィンター
  type: MusicAlbum
  date published: 2021-12-24