Steeve Laffont
type: MusicGroup
genre: french jazz
genre: swing music
popularity: 16
followers: 2368
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42414cca4141c16edf2e8b2db5cabd540fdc919469ab38a867debb4d1f2be486
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcf87f15-5d79-4c31-ac45-548c8c215903.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcf87f15-5d79-4c31-ac45-548c8c215903.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dcf87f15-5d79-4c31-ac45-548c8c215903
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x42414cca4141c16edf2e8b2db5cabd540fdc919469ab38a867debb4d1f2be486","name":"Steeve Laffont","registered_at":"2026-06-15T03:39:21Z","symbol":"NIM0670382","token_address":"0x8772cad8a7b00710ca0e30fb940aa1cf4802b16c","type":"artist","uuid":"dcf87f15-5d79-4c31-ac45-548c8c215903"}
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 0x42414cca4141c16edf2e8b2db5cabd540fdc919469ab38a867debb4d1f2be486. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcf87f15-5d79-4c31-ac45-548c8c215903.json and https://artists.proofprofile.net/proofs/artist/dcf87f15-5d79-4c31-ac45-548c8c215903.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0x42414cca4141c16edf2e8b2db5cabd540fdc919469ab38a867debb4d1f2be486","name":"Steeve Laffont","registered_at":"2026-06-15T03:39:21Z","symbol":"NIM0670382","token_address":"0x8772cad8a7b00710ca0e30fb940aa1cf4802b16c","type":"artist","uuid":"dcf87f15-5d79-4c31-ac45-548c8c215903"}
album: Steeve Laffont live in Marciac
  type: MusicAlbum
  date published: 2011-06-07
album: New Quintet
  type: MusicAlbum
  date published: 2012-01-09
album: Enamoromaï
  type: MusicAlbum
  date published: 2016-11-11
album: Night in Corsica
  type: MusicAlbum
  date published: 2019-01-25
album: Night in Corsica (feat. Rudy Rabuffetti & Giullaume Bouthié) [Instrumental]
  type: MusicAlbum
  date published: 2019-02-01
album: Alba Gitana
  type: MusicAlbum
  date published: 2022-03-11
  track: Alba Gitana
    type: MusicRecording
    duration: PT9M7S
    duration ms: 547226
    explicit: false
    by artist: Steeve Laffont
    in album: Alba Gitana
      type: MusicAlbum
      date published: 2022-03-11
    genre: french jazz
    genre: swing music
    isrc code: FR9W12142764
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T06:13:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc976996f051b7d6a2da24f118ec0ca2390366aef99c0b00bca0828f16cf3f741
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958980
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958980
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12142764
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T07:04:12Z
    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 0xc976996f051b7d6a2da24f118ec0ca2390366aef99c0b00bca0828f16cf3f741. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR9W12142764.
      date published: 2026-07-21T07:04:12Z
    audio: Alba Gitana
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.426
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.499
      additional property: Energy
        type: PropertyValue
        value: 0.407
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.937
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.831
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.363
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.267
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Dinello
    type: MusicRecording
    duration: PT2M47S
    duration ms: 167773
    explicit: false
    by artist: Steeve Laffont
    in album: Alba Gitana
      type: MusicAlbum
      date published: 2022-03-11
    genre: french jazz
    genre: swing music
    isrc code: FR9W12142765
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T09:05:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd4c06bb3050149dd7aedc1e846311b5c32bc4edea8787279af31dc3d79e39dd2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12142765
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0xd4c06bb3050149dd7aedc1e846311b5c32bc4edea8787279af31dc3d79e39dd2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR9W12142765.
      date published: 2026-07-05T10:59:37Z
    audio: Dinello
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.276
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.611
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Energy
type: PropertyValue
value: 0.522

Speechiness
type: PropertyValue
value: 0.08

Acousticness
type: PropertyValue
value: 0.949

Instrumentalness
type: PropertyValue
value: 0.796

Liveness
type: PropertyValue
value: 0.188

Valence (Positivity)
type: PropertyValue
value: 0.934

Loudness (dB)
type: PropertyValue
value: -10.676

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor