音浜高校合唱部 from AMG MUSIC
type: MusicGroup
genre: choral
popularity: 4
followers: 26
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/90a5ba4d-4773-4890-b6c3-ad684cb317d2.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/90a5ba4d-4773-4890-b6c3-ad684cb317d2.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/90a5ba4d-4773-4890-b6c3-ad684cb317d2
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3578687e34d49eb57e1e4312befbd407dffd102770780ecd86ec5cb84c994ae8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90a5ba4d-4773-4890-b6c3-ad684cb317d2.json and https://artists.proofprofile.net/proofs/artist/90a5ba4d-4773-4890-b6c3-ad684cb317d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x3578687e34d49eb57e1e4312befbd407dffd102770780ecd86ec5cb84c994ae8","name":"音浜高校合唱部 from AMG MUSIC","registered_at":"2026-06-17T15:53:34Z","symbol":"NIM1444453","token_address":"0x0445c9416ab0d62abffde6a1512fda84188bcf26","type":"artist","uuid":"90a5ba4d-4773-4890-b6c3-ad684cb317d2"}
album: 桜ノ雨
  type: MusicAlbum
  date published: 2016-03-05
  track: 桜ノ雨
    type: MusicRecording
    duration: PT5M54S
    duration ms: 354024
    explicit: false
    by artist: 音浜高校合唱部 from AMG MUSIC
    in album: 桜ノ雨
      type: MusicAlbum
      date published: 2016-03-05
    genre: choral
    isrc code: JPK271600003
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPK271600003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T20:49:17Z
    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 0xa1c4f0e90d6c77bbc11632ec9c2708a7e4d10691748cc10eae5c9c4ab3aca97d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:17Z), 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/JPK271600003.
      date published: 2026-07-15T20:49:17Z
    audio: 桜ノ雨
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 77.137
      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: 0.423
      additional property: Energy
        type: PropertyValue
        value: 0.415
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.94
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.192
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.742
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major