Lequin
type: MusicGroup
description: Lequin is a surname. Notable people with the surname include: Bradley Lequin (born 1998), Canadian curler Frank Lequin (born 1946), Dutch orientalist
popularity: 5
followers: 129
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2abce0969f860771644e1775eb2048ca629323825e548a9d8d51de7d90893462
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95f0f29c-0115-4e4d-8caf-8cd54e147388.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95f0f29c-0115-4e4d-8caf-8cd54e147388.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95f0f29c-0115-4e4d-8caf-8cd54e147388
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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 0x2abce0969f860771644e1775eb2048ca629323825e548a9d8d51de7d90893462. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95f0f29c-0115-4e4d-8caf-8cd54e147388.json and https://artists.proofprofile.net/proofs/artist/95f0f29c-0115-4e4d-8caf-8cd54e147388.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Normal
  type: MusicAlbum
  date published: 2022-06-20
album: Né Nem o Começo
  type: MusicAlbum
  date published: 2022-10-21
album: Tanqueray
  type: MusicAlbum
  date published: 2023-04-05
album: Rei
  type: MusicAlbum
  date published: 2023-06-02
album: Vida Que Eu Pedi
  type: MusicAlbum
  date published: 2023-10-23
album: Erra Quem Quer
  type: MusicAlbum
  date published: 2025-01-22
  track: Erra Quem Quer
    type: MusicRecording
    duration: PT2M40S
    duration ms: 160520
    explicit: true
    by artist: Lequin
    in album: Erra Quem Quer
      type: MusicAlbum
      date published: 2025-01-22
    isrc code: BKEXG2400002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T20:25:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2711a1917c34b4dd04532be2e0fabd7f12148226f3e8fda593ede8a3b3d36aa3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958197
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958197
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKEXG2400002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T23:27:08Z
    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 0x2711a1917c34b4dd04532be2e0fabd7f12148226f3e8fda593ede8a3b3d36aa3. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:08Z), 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/BKEXG2400002.
      date published: 2026-07-15T23:27:08Z
    audio: Erra Quem Quer
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.536
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.405
      additional property: Energy
        type: PropertyValue
        value: 0.408
      additional property: Speechiness
        type: PropertyValue
        value: 0.099
      additional property: Acousticness
        type: PropertyValue
        value: 0.891
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.408
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.988
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Se Envolve
  type: MusicAlbum
  date published: 2025-05-08
album: MERCI BONJOUR
  type: MusicAlbum
  date published: 2025-09-22