恋川いろは
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 3
followers: 166
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x544545b00d46e354d2fdfe245d903044dee5739cf02ad969ce7798847b585879
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954573
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954573
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5146a39-6563-4803-9937-107c97bc6ce3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5146a39-6563-4803-9937-107c97bc6ce3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b5146a39-6563-4803-9937-107c97bc6ce3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T15:45:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x544545b00d46e354d2fdfe245d903044dee5739cf02ad969ce7798847b585879","name":"恋川いろは","registered_at":"2026-06-20T14:03:51Z","symbol":"NIM1629880","token_address":"0x53259d96f0ba4d2bac7d4601a8d658afdf07c9c3","type":"artist","uuid":"b5146a39-6563-4803-9937-107c97bc6ce3"}
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 0x544545b00d46e354d2fdfe245d903044dee5739cf02ad969ce7798847b585879. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5146a39-6563-4803-9937-107c97bc6ce3.json and https://artists.proofprofile.net/proofs/artist/b5146a39-6563-4803-9937-107c97bc6ce3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T15:45:29Z
  text: {"copyright_id":"0x544545b00d46e354d2fdfe245d903044dee5739cf02ad969ce7798847b585879","name":"恋川いろは","registered_at":"2026-06-20T14:03:51Z","symbol":"NIM1629880","token_address":"0x53259d96f0ba4d2bac7d4601a8d658afdf07c9c3","type":"artist","uuid":"b5146a39-6563-4803-9937-107c97bc6ce3"}
album: 恋紅葉
  type: MusicAlbum
  date published: 2019-09-18
album: くれない夜舟／涙のボレロ／長崎慕情
  type: MusicAlbum
  date published: 2021-10-06
album: あだなさけ夢のからくり／昼顔ボレロ／見返り本牧Ⅱ
  type: MusicAlbum
  date published: 2023-05-10
album: さみだれ忍冬／夢を見ましょう／ネオンテトラ
  type: MusicAlbum
  date published: 2024-10-02
  track: さみだれ忍冬
    type: MusicRecording
    duration: PT4M3S
    duration ms: 243440
    explicit: false
    by artist: 恋川いろは
    in album: さみだれ忍冬／夢を見ましょう／ネオンテトラ
      type: MusicAlbum
      date published: 2024-10-02
    genre: enka
    genre: kayokyoku
    isrc code: JPCR02403490
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T23:04:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa9ab5cc3eba72e870e1203c4c0c05f1a8fcc52ceeb0d838e3e8bea19870ee2f8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCR02403490
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xa9ab5cc3eba72e870e1203c4c0c05f1a8fcc52ceeb0d838e3e8bea19870ee2f8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPCR02403490.
      date published: 2026-07-06T01:25:57Z
    audio: さみだれ忍冬
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.948
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.53
      additional property: Energy
        type: PropertyValue
        value: 0.703
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.351
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.085
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.545
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.389
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor