Léon Branche
type: MusicGroup
popularity: 28
followers: 846
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbd293397e6215900969730b3fd2bf7defd195fe0260e3c67bc434c4384dd819
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b903a7c1-4fda-4c94-8b11-9e1b0de9fcce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b903a7c1-4fda-4c94-8b11-9e1b0de9fcce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b903a7c1-4fda-4c94-8b11-9e1b0de9fcce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdbd293397e6215900969730b3fd2bf7defd195fe0260e3c67bc434c4384dd819","name":"Léon Branche","registered_at":"2026-06-12T08:15:14Z","symbol":"NIM0239162","token_address":"0xbe85566527ecc036212e901a8823086091d6dcc3","type":"artist","uuid":"b903a7c1-4fda-4c94-8b11-9e1b0de9fcce"}
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 0xdbd293397e6215900969730b3fd2bf7defd195fe0260e3c67bc434c4384dd819. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b903a7c1-4fda-4c94-8b11-9e1b0de9fcce.json and https://artists.proofprofile.net/proofs/artist/b903a7c1-4fda-4c94-8b11-9e1b0de9fcce.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xdbd293397e6215900969730b3fd2bf7defd195fe0260e3c67bc434c4384dd819","name":"Léon Branche","registered_at":"2026-06-12T08:15:14Z","symbol":"NIM0239162","token_address":"0xbe85566527ecc036212e901a8823086091d6dcc3","type":"artist","uuid":"b903a7c1-4fda-4c94-8b11-9e1b0de9fcce"}
album: Maestro Dell'Invisibile
  type: MusicAlbum
  date published: 2019-09-05
album: Maestro Dell'Invisibile
  type: MusicAlbum
  date published: 2019-09-05
album: A Hidden Ace
  type: MusicAlbum
  date published: 2020-01-17
album: A Hidden Ace
  type: MusicAlbum
  date published: 2020-01-17
album: After The Silence
  type: MusicAlbum
  date published: 2020-03-16
album: After The Silence
  type: MusicAlbum
  date published: 2020-03-16
  track: After The Silence
    type: MusicRecording
    duration: PT2M23S
    duration ms: 143277
    explicit: false
    by artist: Léon Branche
    in album: After The Silence
      type: MusicAlbum
      date published: 2020-03-16
    isrc code: SEXGF2005401
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T10:39:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x17cc65c0e487b9df28cdda038746dd645cf81166b0b5900ccdd6551911fc9928
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959002
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959002
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXGF2005401
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T11:47:29Z
    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 0x17cc65c0e487b9df28cdda038746dd645cf81166b0b5900ccdd6551911fc9928. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXGF2005401 — a six-check JSON result.
      date published: 2026-07-21T11:47:29Z
    audio: After The Silence
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 65.733
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.392
      additional property: Energy
        type: PropertyValue
        value: 0.055
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.982
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.891
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.063
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.103
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Leniency
  type: MusicAlbum
  date published: 2020-06-17
album: Brand New Tomorrow
  type: MusicAlbum
  date published: 2020-08-21
album: Improbability Solitaire
  type: MusicAlbum
  date published: 2021-02-19
album: At Biltmore
  type: MusicAlbum
  date published: 2021-10-22
album: Cavandoli
  type: MusicAlbum
  date published: 2022-02-25
album: Hommage
  type: MusicAlbum
  date published: 2022-08-26
album: L´été du Sud
  type: MusicAlbum
  date published: 2022-09-30
album: Sunice
  type: MusicAlbum
  date published: 2023-03-10
album: La Disparition
  type: MusicAlbum
  date published: 2023-04-14
album: Flourishing Hill
  type: MusicAlbum
  date published: 2023-09-01
album: La Merveille
  type: MusicAlbum
  date published: 2023-11-10
album: Alberi di Cavandoli
  type: MusicAlbum
  date published: 2023-11-24
album: Minsvilquois
  type: MusicAlbum
  date published: 2024-02-16
album: Revenir
  type: MusicAlbum
  date published: 2024-05-10
album: Amité Magique
  type: MusicAlbum
  date published: 2024-06-14
album: Automne Nordique
  type: MusicAlbum
  date published: 2025-02-14
album: Conjuring
  type: MusicAlbum
  date published: 2025-03-14
album: En Attendant
  type: MusicAlbum
  date published: 2025-04-25
album: Allegoria
  type: MusicAlbum
  date published: 2025-06-13
album: Fogspell
  type: MusicAlbum
  date published: 2025-09-19