北高文芸部女子会
type: MusicGroup
genre: anime
popularity: 6
followers: 508
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd00dd540ea2f34f95f3532f72110bcdeaa4bbafd76c0fd6856acd85d3e9f2b46
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953950
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953950
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2469fc6c-d7f9-4dad-9e4d-30a65fac059c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2469fc6c-d7f9-4dad-9e4d-30a65fac059c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2469fc6c-d7f9-4dad-9e4d-30a65fac059c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:35:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd00dd540ea2f34f95f3532f72110bcdeaa4bbafd76c0fd6856acd85d3e9f2b46","name":"北高文芸部女子会","registered_at":"2026-06-16T02:15:06Z","symbol":"NIM0905633","token_address":"0xa72f38801b45993da0d81529aa2b0c5e71797d48","type":"artist","uuid":"2469fc6c-d7f9-4dad-9e4d-30a65fac059c"}
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 0xd00dd540ea2f34f95f3532f72110bcdeaa4bbafd76c0fd6856acd85d3e9f2b46. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2469fc6c-d7f9-4dad-9e4d-30a65fac059c.json and https://artists.proofprofile.net/proofs/artist/2469fc6c-d7f9-4dad-9e4d-30a65fac059c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xd00dd540ea2f34f95f3532f72110bcdeaa4bbafd76c0fd6856acd85d3e9f2b46","name":"北高文芸部女子会","registered_at":"2026-06-16T02:15:06Z","symbol":"NIM0905633","token_address":"0xa72f38801b45993da0d81529aa2b0c5e71797d48","type":"artist","uuid":"2469fc6c-d7f9-4dad-9e4d-30a65fac059c"}
album: フレ降レミライ
  type: MusicAlbum
  date published: 2015-04-29
  track: フレ降レミライ
    type: MusicRecording
    duration: PT3M55S
    duration ms: 235929
    explicit: false
    by artist: 北高文芸部女子会
    in album: フレ降レミライ
      type: MusicAlbum
      date published: 2015-04-29
    genre: anime
    isrc code: JPI101500493
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-30T00:21:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3732dc02f8a34effe0446dc094e7a9f5e7dbdba73ce61e01e6aa5a3df025da39
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101500493
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x3732dc02f8a34effe0446dc094e7a9f5e7dbdba73ce61e01e6aa5a3df025da39. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPI101500493.
      date published: 2026-07-02T16:51:38Z
    audio: フレ降レミライ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.044
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.547
      additional property: Energy
        type: PropertyValue
        value: 0.892
      additional property: Speechiness
        type: PropertyValue
        value: 0.072
      additional property: Acousticness
        type: PropertyValue
        value: 0.088
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.341
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.761
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.616
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor