マーチングポケッツ[日向千夏(CV:岡咲美保)、柏木美亜(CV:和氣あず未)、東雲つむぎ(CV:和泉風花)]
type: MusicGroup
popularity: 2
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x08e24a5b12b50b3c68d6c3bae320d13c771a561b2839ddfe87a6cc03e20b00c3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x08e24a5b12b50b3c68d6c3bae320d13c771a561b2839ddfe87a6cc03e20b00c3","name":"マーチングポケッツ[日向千夏(CV:岡咲美保)、柏木美亜(CV:和氣あず未)、東雲つむぎ(CV:和泉風花)]","registered_at":"2026-06-16T11:37:03Z","symbol":"NIM1039812","token_address":"0xbf84fa3a983a1764bcc6da45f8b88bffb48c00a7","type":"artist","uuid":"3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7"}
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 0x08e24a5b12b50b3c68d6c3bae320d13c771a561b2839ddfe87a6cc03e20b00c3. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7.json and https://artists.proofprofile.net/proofs/artist/3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x08e24a5b12b50b3c68d6c3bae320d13c771a561b2839ddfe87a6cc03e20b00c3","name":"マーチングポケッツ[日向千夏(CV:岡咲美保)、柏木美亜(CV:和氣あず未)、東雲つむぎ(CV:和泉風花)]","registered_at":"2026-06-16T11:37:03Z","symbol":"NIM1039812","token_address":"0xbf84fa3a983a1764bcc6da45f8b88bffb48c00a7","type":"artist","uuid":"3f5314ff-97cf-40f0-afa6-a0df2dc3e1e7"}
album: ONGEKI Vocal Collection (6)
  type: MusicAlbum
  date published: 2019-12-25
album: ONGEKI Vocal Collection (6)
  type: MusicAlbum
  date published: 2019-12-25
  track: まっすぐ→→→ストリーム!
    type: MusicRecording
    duration: PT4M19S
    duration ms: 259293
    explicit: false
    by artist: マーチングポケッツ[日向千夏(CV:岡咲美保)、柏木美亜(CV:和氣あず未)、東雲つむぎ(CV:和泉風花)]
    in album: ONGEKI Vocal Collection (6)
      type: MusicAlbum
      date published: 2019-12-25
    isrc code: JPD731900595
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T06:35:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x51ea2d6bfba7e1dc131b51e0a2fd562472ce82db98e5a7546d68ff75fd48602c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956500
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956500
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD731900595
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T13:55:21Z
    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 0x51ea2d6bfba7e1dc131b51e0a2fd562472ce82db98e5a7546d68ff75fd48602c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPD731900595.
      date published: 2026-07-03T13:55:21Z
    audio: まっすぐ→→→ストリーム!
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 184.061
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.492
      additional property: Energy
        type: PropertyValue
        value: 0.99
      additional property: Speechiness
        type: PropertyValue
        value: 0.111
      additional property: Acousticness
        type: PropertyValue
        value: 0.009
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.109
      additional property: Liveness
        type: PropertyValue
        value: 0.387
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.377
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.221
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major