3Lettres
type: MusicGroup
popularity: 6
followers: 151
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb21cd8d783fbf6b1fd6c6dcb3183083adfedf1da841339fe84fda7aa19bae19
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c2509b82-62d9-477e-a1a1-f4fa47fe2151.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c2509b82-62d9-477e-a1a1-f4fa47fe2151.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c2509b82-62d9-477e-a1a1-f4fa47fe2151
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
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 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 0xdb21cd8d783fbf6b1fd6c6dcb3183083adfedf1da841339fe84fda7aa19bae19. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2509b82-62d9-477e-a1a1-f4fa47fe2151.json and https://artists.proofprofile.net/proofs/artist/c2509b82-62d9-477e-a1a1-f4fa47fe2151.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
album: Vital
  type: MusicAlbum
  date published: 2021-10-11
album: Medusa
  type: MusicAlbum
  date published: 2022-01-02
album: Maudit
  type: MusicAlbum
  date published: 2022-03-03
album: Psycho Patient #1
  type: MusicAlbum
  date published: 2022-10-16
album: Psycho Patient #II
  type: MusicAlbum
  date published: 2022-11-13
album: Psycho Patient #III
  type: MusicAlbum
  date published: 2022-12-04
album: Psycho Final
  type: MusicAlbum
  date published: 2023-01-29
album: Sale état
  type: MusicAlbum
  date published: 2023-05-29
album: Dinguerie
  type: MusicAlbum
  date published: 2023-07-03
  track: Dinguerie
    type: MusicRecording
    duration: PT2M49S
    duration ms: 169911
    explicit: true
    by artist: 3Lettres
    in album: Dinguerie
      type: MusicAlbum
      date published: 2023-07-03
    isrc code: TCAHE2393557
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T19:37:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9129e8a95cb49c5af68bf77e5ef5c24e7e6c17dd36cd1f6d42247b53d11243fc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958058
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958058
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHE2393557
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T20:20:34Z
    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 0x9129e8a95cb49c5af68bf77e5ef5c24e7e6c17dd36cd1f6d42247b53d11243fc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAHE2393557.
      date published: 2026-07-14T20:20:34Z
    audio: Dinguerie
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.037
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.94
      additional property: Energy
        type: PropertyValue
        value: 0.548
      additional property: Speechiness
        type: PropertyValue
        value: 0.32
      additional property: Acousticness
        type: PropertyValue
        value: 0.164
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.532
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Vitamine
  type: MusicAlbum
  date published: 2023-12-29
album: W.T.G
  type: MusicAlbum
  date published: 2024-03-17
album: Aucun titre
  type: MusicAlbum
  date published: 2024-04-29
album: Ruée vers l'or
  type: MusicAlbum
  date published: 2024-07-29
album: Karaté
  type: MusicAlbum
  date published: 2025-01-30
album: Loin des Humains
  type: MusicAlbum
  date published: 2025-05-19
album: Tactile
  type: MusicAlbum
  date published: 2025-07-18
album: Oh La Ouais
  type: MusicAlbum
  date published: 2025-11-05