Grande Noirceur
type: MusicGroup
description: The Grande Noirceur (; English: Great Darkness) refers to the regime of conservative policies undertaken by the governing body of Quebec Premier Maurice Le Noblet Duplessis from 1936 to 1939 and from
popularity: 6
followers: 42
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5341097a873b81748a19653dc2836d6df6a9badc6f70b87f3195340b91066663
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3c23a9fd-d9b6-481c-8520-4469f6f0c31c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3c23a9fd-d9b6-481c-8520-4469f6f0c31c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3c23a9fd-d9b6-481c-8520-4469f6f0c31c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5341097a873b81748a19653dc2836d6df6a9badc6f70b87f3195340b91066663","name":"Grande Noirceur","registered_at":"2026-06-16T10:34:02Z","symbol":"NIM1024783","token_address":"0x532bab5892a3bf78a605190b6b29ad5d94dbba22","type":"artist","uuid":"3c23a9fd-d9b6-481c-8520-4469f6f0c31c"}
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 0x5341097a873b81748a19653dc2836d6df6a9badc6f70b87f3195340b91066663. 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/3c23a9fd-d9b6-481c-8520-4469f6f0c31c.json and https://artists.proofprofile.net/proofs/artist/3c23a9fd-d9b6-481c-8520-4469f6f0c31c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x5341097a873b81748a19653dc2836d6df6a9badc6f70b87f3195340b91066663","name":"Grande Noirceur","registered_at":"2026-06-16T10:34:02Z","symbol":"NIM1024783","token_address":"0x532bab5892a3bf78a605190b6b29ad5d94dbba22","type":"artist","uuid":"3c23a9fd-d9b6-481c-8520-4469f6f0c31c"}
album: Fierté, Mémoire, Dissidence
  type: MusicAlbum
  date published: 2017-10-30
album: Quebecensis
  type: MusicAlbum
  date published: 2022-01-22
  track: BBQ (Le diable est aux vaches)
    type: MusicRecording
    duration: PT2M28S
    duration ms: 148180
    explicit: false
    by artist: Grande Noirceur
    in album: Quebecensis
      type: MusicAlbum
      date published: 2022-01-22
    isrc code: QZFYX2378567
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T11:03:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958152
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958152
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2378567
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T14:03:00Z
    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 0xfa5fd8b86cd87de1d9d03f9cd33866a15cb1c7989239fdfe66e4523d076cb290. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:00Z), 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/QZFYX2378567.
      date published: 2026-07-15T14:03:00Z
    audio: BBQ (Le diable est aux vaches)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.034
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.784
      additional property: Energy
        type: PropertyValue
        value: 0.663
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.185
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.322
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.791
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.742
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Simon-Pierre Savard-Tremblay
  type: MusicAlbum
  date published: 2024-12-03
album: Impulsion
  type: MusicAlbum
  date published: 2025-07-14