皆川おさむとひばり児童合唱団
type: MusicGroup
genre: anime
popularity: 2
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x41dea123ec0ad0659ee6e8854f825fb5e1e31342d21faa520c06100a2f713591
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aeec7747-d332-4170-98a9-ca703f9ee3fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aeec7747-d332-4170-98a9-ca703f9ee3fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aeec7747-d332-4170-98a9-ca703f9ee3fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x41dea123ec0ad0659ee6e8854f825fb5e1e31342d21faa520c06100a2f713591","name":"皆川おさむとひばり児童合唱団","registered_at":"2026-06-20T11:11:22Z","symbol":"NIM1599650","token_address":"0x40798d6856b89ec9f67d94a13dee57c5a1613a8e","type":"artist","uuid":"aeec7747-d332-4170-98a9-ca703f9ee3fb"}
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 0x41dea123ec0ad0659ee6e8854f825fb5e1e31342d21faa520c06100a2f713591. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeec7747-d332-4170-98a9-ca703f9ee3fb.json and https://artists.proofprofile.net/proofs/artist/aeec7747-d332-4170-98a9-ca703f9ee3fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x41dea123ec0ad0659ee6e8854f825fb5e1e31342d21faa520c06100a2f713591","name":"皆川おさむとひばり児童合唱団","registered_at":"2026-06-20T11:11:22Z","symbol":"NIM1599650","token_address":"0x40798d6856b89ec9f67d94a13dee57c5a1613a8e","type":"artist","uuid":"aeec7747-d332-4170-98a9-ca703f9ee3fb"}
album: ケロ猫のタンゴ
  type: MusicAlbum
  date published: 2020-10-28
  track: ケロ猫のタンゴ
    type: MusicRecording
    duration: PT4M23S
    duration ms: 263533
    explicit: false
    by artist: 皆川おさむとひばり児童合唱団
    in album: ケロ猫のタンゴ
      type: MusicAlbum
      date published: 2020-10-28
    genre: anime
    isrc code: JPG750700269
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T18:00:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfa107f6c2a0c0f3a1eb0d410b4738d12f805c5e4e385a636d4bc37bab71ca22b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958316
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958316
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG750700269
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T19:42:29Z
    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 0xfa107f6c2a0c0f3a1eb0d410b4738d12f805c5e4e385a636d4bc37bab71ca22b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPG750700269.
      date published: 2026-07-16T19:42:29Z
    audio: ケロ猫のタンゴ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.825
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.506
      additional property: Energy
        type: PropertyValue
        value: 0.469
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.733
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.32
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.587
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.602
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor