Louve noir
type: MusicGroup
genre: j-rock
popularity: 2
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf10ef3f37e79cbac75446d065411fb9d2d3018c99e9e964ff98e411e8a2af52d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5544b8cb-1fea-4972-9f8f-27451111e69c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5544b8cb-1fea-4972-9f8f-27451111e69c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5544b8cb-1fea-4972-9f8f-27451111e69c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf10ef3f37e79cbac75446d065411fb9d2d3018c99e9e964ff98e411e8a2af52d","name":"Louve noir","registered_at":"2026-06-16T19:22:22Z","symbol":"NIM1150821","token_address":"0xcc4cb3e24b5cc80feac9a13013c4e70e5dfa92e3","type":"artist","uuid":"5544b8cb-1fea-4972-9f8f-27451111e69c"}
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 0xf10ef3f37e79cbac75446d065411fb9d2d3018c99e9e964ff98e411e8a2af52d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5544b8cb-1fea-4972-9f8f-27451111e69c.json and https://artists.proofprofile.net/proofs/artist/5544b8cb-1fea-4972-9f8f-27451111e69c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xf10ef3f37e79cbac75446d065411fb9d2d3018c99e9e964ff98e411e8a2af52d","name":"Louve noir","registered_at":"2026-06-16T19:22:22Z","symbol":"NIM1150821","token_address":"0xcc4cb3e24b5cc80feac9a13013c4e70e5dfa92e3","type":"artist","uuid":"5544b8cb-1fea-4972-9f8f-27451111e69c"}
album: 初恋
  type: MusicAlbum
  date published: 2024-04-20
album: 君のため
  type: MusicAlbum
  date published: 2024-06-08
album: Before
  type: MusicAlbum
  date published: 2024-10-26
album: 馬鹿正直な君
  type: MusicAlbum
  date published: 2024-11-02
album: 愛の証明
  type: MusicAlbum
  date published: 2025-03-17
  track: 愛の証明
    type: MusicRecording
    duration: PT4M39S
    duration ms: 279848
    explicit: false
    by artist: Louve noir
    in album: 愛の証明
      type: MusicAlbum
      date published: 2025-03-17
    genre: j-rock
    isrc code: JP92A2502723
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T02:08:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x97d593a448deb52ad72f5e41f804151c7548c1f3c2d5b9b0341820a78081116c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92A2502723
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x97d593a448deb52ad72f5e41f804151c7548c1f3c2d5b9b0341820a78081116c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92A2502723.
      date published: 2026-07-06T06:56:49Z
    audio: 愛の証明
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.985
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.528
      additional property: Energy
        type: PropertyValue
        value: 0.983
      additional property: Speechiness
        type: PropertyValue
        value: 0.093
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.356
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.503
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.79
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor