Alexandre Caldi
type: MusicGroup
genre: brazilian jazz
popularity: 8
followers: 485
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad1f26f67a9f396ecac35564103aae4a7859af14c26cbfc70a71076aeabc7416
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b827e8ba-eded-4d42-a467-6f8375ce98a7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b827e8ba-eded-4d42-a467-6f8375ce98a7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b827e8ba-eded-4d42-a467-6f8375ce98a7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad1f26f67a9f396ecac35564103aae4a7859af14c26cbfc70a71076aeabc7416","name":"Alexandre Caldi","registered_at":"2026-06-20T15:50:19Z","symbol":"NIM1645420","token_address":"0x05129fd9157ba918548aba55754bf0641b57d33e","type":"artist","uuid":"b827e8ba-eded-4d42-a467-6f8375ce98a7"}
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 0xad1f26f67a9f396ecac35564103aae4a7859af14c26cbfc70a71076aeabc7416. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b827e8ba-eded-4d42-a467-6f8375ce98a7.json and https://artists.proofprofile.net/proofs/artist/b827e8ba-eded-4d42-a467-6f8375ce98a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xad1f26f67a9f396ecac35564103aae4a7859af14c26cbfc70a71076aeabc7416","name":"Alexandre Caldi","registered_at":"2026-06-20T15:50:19Z","symbol":"NIM1645420","token_address":"0x05129fd9157ba918548aba55754bf0641b57d33e","type":"artist","uuid":"b827e8ba-eded-4d42-a467-6f8375ce98a7"}
album: Festeiro
  type: MusicAlbum
  date published: 2008-06-02
album: Intrometidos
  type: MusicAlbum
  date published: 2012
album: Mestiçaria (Instrumental)
  type: MusicAlbum
  date published: 2016-04-01
album: Afro+sambas
  type: MusicAlbum
  date published: 2019-11-29
album: Buarqueanas
  type: MusicAlbum
  date published: 2021-06-16
track: História de um Valente
  type: MusicRecording
  duration: PT2M53S
  duration ms: 173266
  explicit: false
  by artist: Sururu Na Roda
  by artist: Alexandre Caldi
  in album: Se Você Me Ouvisse
    type: MusicAlbum
    date published: 2011-03-01
  isrc code: BRBG61100055
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T06:58:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5fe1578705a6e7bd9434d01a5bb024213f3a457373ca90a7571bb39c07f1c395
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960368
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960368
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBG61100055
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T08:26:41Z
  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 0x5fe1578705a6e7bd9434d01a5bb024213f3a457373ca90a7571bb39c07f1c395. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRBG61100055.
    date published: 2026-07-31T08:26:41Z
  audio: História de um Valente
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.047
    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: 0.673
    additional property: Energy
      type: PropertyValue
      value: 0.515
    additional property: Speechiness
      type: PropertyValue
      value: 0.053
    additional property: Acousticness
      type: PropertyValue
      value: 0.48
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.164
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.595
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.558
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major