七尾百合子 (CV.伊藤美来)
type: MusicGroup
popularity: 22
followers: 826
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x87e6b74e63fc73a745b785511335a8bafb78fe1916fa80b07ed4daa4065cb46e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2a08f21-377d-4941-b219-784f1936d486.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2a08f21-377d-4941-b219-784f1936d486.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a2a08f21-377d-4941-b219-784f1936d486
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x87e6b74e63fc73a745b785511335a8bafb78fe1916fa80b07ed4daa4065cb46e","name":"七尾百合子 (CV.伊藤美来)","registered_at":"2026-06-12T06:11:44Z","symbol":"NIM0210611","token_address":"0x41dcd3aebd95c6653e7c9303317bc3d6fb8cfdf1","type":"artist","uuid":"a2a08f21-377d-4941-b219-784f1936d486"}
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 0x87e6b74e63fc73a745b785511335a8bafb78fe1916fa80b07ed4daa4065cb46e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2a08f21-377d-4941-b219-784f1936d486.json and https://artists.proofprofile.net/proofs/artist/a2a08f21-377d-4941-b219-784f1936d486.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x87e6b74e63fc73a745b785511335a8bafb78fe1916fa80b07ed4daa4065cb46e","name":"七尾百合子 (CV.伊藤美来)","registered_at":"2026-06-12T06:11:44Z","symbol":"NIM0210611","token_address":"0x41dcd3aebd95c6653e7c9303317bc3d6fb8cfdf1","type":"artist","uuid":"a2a08f21-377d-4941-b219-784f1936d486"}
album: 君と同じ物語
  type: MusicAlbum
  date published: 2024-11-11
  track: 君と同じ物語
    type: MusicRecording
    duration: PT4M19S
    duration ms: 259545
    explicit: false
    by artist: 七尾百合子 (CV.伊藤美来)
    in album: 君と同じ物語
      type: MusicAlbum
      date published: 2024-11-11
    isrc code: JPI102402729
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T13:38:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5d3f532c58a431cd1fa4d26a95363858a44dd3786413ab8268916c7f05d25c9c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958166
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958166
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102402729
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T16:39:11Z
    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 0x5d3f532c58a431cd1fa4d26a95363858a44dd3786413ab8268916c7f05d25c9c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:11Z), 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/JPI102402729.
      date published: 2026-07-15T16:39:11Z
    audio: 君と同じ物語
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.959
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.44
      additional property: Energy
        type: PropertyValue
        value: 0.935
      additional property: Speechiness
        type: PropertyValue
        value: 0.104
      additional property: Acousticness
        type: PropertyValue
        value: 0.08
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.026
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.447
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.771
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major