宮内庁式部職楽部
type: MusicGroup
genre: japanese classical
genre: traditional music
popularity: 9
followers: 807
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf19adb2400d31ffe628e15971f4fc997730d8c78377e8dab0dbe12a18c773cad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c297f77-9c4d-4338-a81f-ecc79a32fe9c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c297f77-9c4d-4338-a81f-ecc79a32fe9c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6c297f77-9c4d-4338-a81f-ecc79a32fe9c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf19adb2400d31ffe628e15971f4fc997730d8c78377e8dab0dbe12a18c773cad","name":"宮内庁式部職楽部","registered_at":"2026-06-17T03:21:31Z","symbol":"NIM1265145","token_address":"0x837dea7c93d9fbdf93c90467c8324ee01b48dae7","type":"artist","uuid":"6c297f77-9c4d-4338-a81f-ecc79a32fe9c"}
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 0xf19adb2400d31ffe628e15971f4fc997730d8c78377e8dab0dbe12a18c773cad. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c297f77-9c4d-4338-a81f-ecc79a32fe9c.json and https://artists.proofprofile.net/proofs/artist/6c297f77-9c4d-4338-a81f-ecc79a32fe9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf19adb2400d31ffe628e15971f4fc997730d8c78377e8dab0dbe12a18c773cad","name":"宮内庁式部職楽部","registered_at":"2026-06-17T03:21:31Z","symbol":"NIM1265145","token_address":"0x837dea7c93d9fbdf93c90467c8324ee01b48dae7","type":"artist","uuid":"6c297f77-9c4d-4338-a81f-ecc79a32fe9c"}
album: 雅楽「越天楽」三調
  type: MusicAlbum
  date published: 1991-06-21
  track: 越天楽今様
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241133
    explicit: false
    by artist: 宮内庁式部職楽部
    in album: 雅楽「越天楽」三調
      type: MusicAlbum
      date published: 1991-06-21
    genre: japanese classical
    genre: traditional music
    isrc code: JPCO08423160
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T21:16:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7c41f6608aa2897229c9abe805d2ec7f63420c6167e2675b7488989082e70efd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO08423160
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x7c41f6608aa2897229c9abe805d2ec7f63420c6167e2675b7488989082e70efd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPCO08423160.
      date published: 2026-07-04T10:04:33Z
    audio: 越天楽今様
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.836
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.125
      additional property: Energy
        type: PropertyValue
        value: 0.1
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.716
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.47
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.038
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.818
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 日本の楽器 雅楽
  type: MusicAlbum
  date published: 2001-11-21
  track: 平調 越天楽 〜残楽三返〜
    type: MusicRecording
    duration: PT9M41S
    duration ms: 581000
    explicit: false
    by artist: 宮内庁式部職楽部
    in album: 日本の楽器 雅楽
      type: MusicAlbum
      date published: 2001-11-21
    genre: japanese classical
    genre: traditional music
    isrc code: JPCO06101850
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T09:51:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x639b75c02779b4d7bebf7071c9bcb4d449b0074505112a9527cc97891b2dda7c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO06101850
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x639b75c02779b4d7bebf7071c9bcb4d449b0074505112a9527cc97891b2dda7c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPCO06101850.
      date published: 2026-07-03T19:59:51Z
    audio: 平調 越天楽 〜残楽三返〜
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.932
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.302
      additional property: Energy
        type: PropertyValue
        value: 0.104
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.807
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.168
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 特選 雅楽

Liveness
type: PropertyValue
value: 0.086

Valence (Positivity)
type: PropertyValue
value: 0.156

Loudness (dB)
type: PropertyValue
value: -17.406

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

特選 雅楽
type: MusicAlbum
date published: 2013-12-18