Kotoba, Inc
type: MusicGroup
popularity: 7
followers: 1790
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb4621d2bf0de52510403ce8f6785bd4616441c957b2ff77c8816895d2ba9849
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9cb5e340-bfe2-446f-be54-ba41a1593da4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9cb5e340-bfe2-446f-be54-ba41a1593da4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9cb5e340-bfe2-446f-be54-ba41a1593da4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeb4621d2bf0de52510403ce8f6785bd4616441c957b2ff77c8816895d2ba9849","name":"Kotoba, Inc","registered_at":"2026-06-20T04:10:37Z","symbol":"NIM1508189","token_address":"0x6fc6f9c1b33ec62e5deb06517c9efa3797ce6557","type":"artist","uuid":"9cb5e340-bfe2-446f-be54-ba41a1593da4"}
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 0xeb4621d2bf0de52510403ce8f6785bd4616441c957b2ff77c8816895d2ba9849. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cb5e340-bfe2-446f-be54-ba41a1593da4.json and https://artists.proofprofile.net/proofs/artist/9cb5e340-bfe2-446f-be54-ba41a1593da4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0xeb4621d2bf0de52510403ce8f6785bd4616441c957b2ff77c8816895d2ba9849","name":"Kotoba, Inc","registered_at":"2026-06-20T04:10:37Z","symbol":"NIM1508189","token_address":"0x6fc6f9c1b33ec62e5deb06517c9efa3797ce6557","type":"artist","uuid":"9cb5e340-bfe2-446f-be54-ba41a1593da4"}
album: Japanese Reader Shitakiri Suzume the Cut-Tongue Sparrow
  type: MusicAlbum
  date published: 2011-01-11
album: Learn Japanese with Dialogues: Greetings and Meetings
  type: MusicAlbum
  date published: 2011-01-16
  track: Dialogue 1 Vocabulary & English
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165798
    explicit: false
    by artist: Kotoba, Inc
    in album: Learn Japanese with Dialogues: Greetings and Meetings
      type: MusicAlbum
      date published: 2011-01-16
    isrc code: USX9P1096240
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T10:16:18+00:00
    additional property: CopyrightChainExplorerURL
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      value: https://explorer.copyrightchains.com/tx/0xa5e57f1036fa088e37eb9428ff7947514a2d2ab5fcb3c242cfdde6f849fe34a2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 959123
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959123
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P1096240
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T11:35:32Z
    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 0xa5e57f1036fa088e37eb9428ff7947514a2d2ab5fcb3c242cfdde6f849fe34a2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USX9P1096240.
      date published: 2026-07-22T11:35:32Z
    audio: Dialogue 1 Vocabulary & English
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.561
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.715
      additional property: Energy
        type: PropertyValue
        value: 0.142
      additional property: Speechiness
        type: PropertyValue
        value: 0.815
      additional property: Acousticness
        type: PropertyValue
        value: 0.32
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.36
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.459
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor