Alexandre Spotti (Leco)
type: MusicGroup
popularity: 3
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b8270f1a914e40eb2ff9e3bb5f322d0b380f9b5ac72690f8949c96e534f646e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fefe16fd-5ea1-44ee-bac1-ad81169cba3d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fefe16fd-5ea1-44ee-bac1-ad81169cba3d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fefe16fd-5ea1-44ee-bac1-ad81169cba3d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2b8270f1a914e40eb2ff9e3bb5f322d0b380f9b5ac72690f8949c96e534f646e","name":"Alexandre Spotti (Leco)","registered_at":"2026-06-21T18:31:37Z","symbol":"NIM2002432","token_address":"0xfe9444d4f0be78fd5ed21161f1d1277eccff41d5","type":"artist","uuid":"fefe16fd-5ea1-44ee-bac1-ad81169cba3d"}
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 0x2b8270f1a914e40eb2ff9e3bb5f322d0b380f9b5ac72690f8949c96e534f646e. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fefe16fd-5ea1-44ee-bac1-ad81169cba3d.json and https://artists.proofprofile.net/proofs/artist/fefe16fd-5ea1-44ee-bac1-ad81169cba3d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x2b8270f1a914e40eb2ff9e3bb5f322d0b380f9b5ac72690f8949c96e534f646e","name":"Alexandre Spotti (Leco)","registered_at":"2026-06-21T18:31:37Z","symbol":"NIM2002432","token_address":"0xfe9444d4f0be78fd5ed21161f1d1277eccff41d5","type":"artist","uuid":"fefe16fd-5ea1-44ee-bac1-ad81169cba3d"}
track: Medo
  type: MusicRecording
  duration: PT4M41S
  duration ms: 281143
  explicit: false
  by artist: Contra Fluxo
  by artist: Nave
  by artist: Alexandre Spotti (Leco)
  by artist: Henrick Fuentes
  in album: Superação (2007)
    type: MusicAlbum
    date published: 2024-02-23
  isrc code: BR6YG2400013
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T07:56:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0ade85162966f769e3d96eb4cdc05433da3169897849a3cab4bb387227ad0c1d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960225
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960225
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR6YG2400013
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T08:04:30Z
  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 0x0ade85162966f769e3d96eb4cdc05433da3169897849a3cab4bb387227ad0c1d. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/BR6YG2400013 — a six-check JSON result.
    date published: 2026-07-30T08:04:30Z
  audio: Medo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.839
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.723
    additional property: Energy
      type: PropertyValue
      value: 0.765
    additional property: Speechiness
      type: PropertyValue
      value: 0.266
    additional property: Acousticness
      type: PropertyValue
      value: 0.2
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.109
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.765
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.426
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Quem Vai Chegar
  type: MusicRecording
  duration: PT3M47S
  duration ms: 227134
  explicit: false
  by artist: Contra Fluxo
  by artist: Alexandre Spotti (Leco)
  by artist: Henrick Fuentes
  by artist: Jeff E
  in album: Superação (2007)
    type: MusicAlbum
    date published: 2024-02-23
  isrc code: BR6YG2400019
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-24T13:39:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf8f93b5d2b5d8a1ee968d3af18a827fdf66ef2a9d8b00ed82ec12e43828e053b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR6YG2400019
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 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 0xf8f93b5d2b5d8a1ee968d3af18a827fdf66ef2a9d8b00ed82ec12e43828e053b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR6YG2400019 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Quem Vai Chegar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 110.969
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.866
    additional property: Energy
      type: PropertyValue
      value: 0.592
    additional property: Speechiness
      type: PropertyValue
      value: 0.342
    additional property: Acousticness
      type: PropertyValue
      value: 0.044
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.355
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.756

Loudness (dB)
type: PropertyValue
value: -9.974

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major