麻布 汐(CV:豊永 利行)
type: MusicGroup
genre: vocaloid
popularity: 12
followers: 702
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x883182da04c8c6fe04002818dc5f0448e36e3806cb800241a1c618589d305d4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953709
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953709
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cb071ff-68ae-4760-9add-1ccff546c1d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cb071ff-68ae-4760-9add-1ccff546c1d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7cb071ff-68ae-4760-9add-1ccff546c1d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:31:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x883182da04c8c6fe04002818dc5f0448e36e3806cb800241a1c618589d305d4f","name":"麻布 汐(CV:豊永 利行)","registered_at":"2026-06-14T17:37:27Z","symbol":"NIM0526764","token_address":"0x05d1d2050af7c88411d7ea47f7b764ecaf4dab4a","type":"artist","uuid":"7cb071ff-68ae-4760-9add-1ccff546c1d0"}
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 0x883182da04c8c6fe04002818dc5f0448e36e3806cb800241a1c618589d305d4f. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cb071ff-68ae-4760-9add-1ccff546c1d0.json and https://artists.proofprofile.net/proofs/artist/7cb071ff-68ae-4760-9add-1ccff546c1d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T23:31:11Z
  text: {"copyright_id":"0x883182da04c8c6fe04002818dc5f0448e36e3806cb800241a1c618589d305d4f","name":"麻布 汐(CV:豊永 利行)","registered_at":"2026-06-14T17:37:27Z","symbol":"NIM0526764","token_address":"0x05d1d2050af7c88411d7ea47f7b764ecaf4dab4a","type":"artist","uuid":"7cb071ff-68ae-4760-9add-1ccff546c1d0"}
album: 天樂
  type: MusicAlbum
  date published: 2020-04-29
  track: 天樂
    type: MusicRecording
    duration: PT4M33S
    duration ms: 273604
    explicit: false
    by artist: 麻布 汐(CV:豊永 利行)
    in album: 天樂
      type: MusicAlbum
      date published: 2020-04-29
    genre: vocaloid
    isrc code: JPPC02000544
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T08:25:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x17960c860a42672ca77ef711476ea02f16439a2ea8e88a1c9ba94d882d46df65
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959114
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959114
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPC02000544
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T08:41:42Z
    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 0x17960c860a42672ca77ef711476ea02f16439a2ea8e88a1c9ba94d882d46df65. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPPC02000544.
      date published: 2026-07-22T08:41:42Z
    audio: 天樂
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.992
      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: 0.641
      additional property: Energy
        type: PropertyValue
        value: 0.927
      additional property: Speechiness
        type: PropertyValue
        value: 0.064
      additional property: Acousticness
        type: PropertyValue
        value: 0.038
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.17
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.692
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.299
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor