Alexandre Buda
type: MusicGroup
genre: axé
popularity: 2
followers: 344
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd40f7e90d375f9ec3695a13395bceaf68382920447fe0fd5e439d3d3a699e22d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5016a0cf-2a73-4db2-b4e8-7e0b67f209ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5016a0cf-2a73-4db2-b4e8-7e0b67f209ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5016a0cf-2a73-4db2-b4e8-7e0b67f209ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd40f7e90d375f9ec3695a13395bceaf68382920447fe0fd5e439d3d3a699e22d","name":"Alexandre Buda","registered_at":"2026-06-16T17:28:55Z","symbol":"NIM1123755","token_address":"0xb47a22bf346ed78a140ba03ea891e16e38eaa7e7","type":"artist","uuid":"5016a0cf-2a73-4db2-b4e8-7e0b67f209ca"}
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 0xd40f7e90d375f9ec3695a13395bceaf68382920447fe0fd5e439d3d3a699e22d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5016a0cf-2a73-4db2-b4e8-7e0b67f209ca.json and https://artists.proofprofile.net/proofs/artist/5016a0cf-2a73-4db2-b4e8-7e0b67f209ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xd40f7e90d375f9ec3695a13395bceaf68382920447fe0fd5e439d3d3a699e22d","name":"Alexandre Buda","registered_at":"2026-06-16T17:28:55Z","symbol":"NIM1123755","token_address":"0xb47a22bf346ed78a140ba03ea891e16e38eaa7e7","type":"artist","uuid":"5016a0cf-2a73-4db2-b4e8-7e0b67f209ca"}
album: Cantiga de Oxum
  type: MusicAlbum
  date published: 2023-03-24
  track: Cantiga de Oxum
    type: MusicRecording
    duration: PT3M3S
    duration ms: 183144
    explicit: false
    by artist: Alexandre Buda
    in album: Cantiga de Oxum
      type: MusicAlbum
      date published: 2023-03-24
    genre: axé
    isrc code: SGB502340313
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T05:42:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x966b1318f6491bc1401d4e01e192cdb12714a836648f44210c3500b8e4e50603
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958544
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958544
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SGB502340313
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T12:14:37Z
    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 0x966b1318f6491bc1401d4e01e192cdb12714a836648f44210c3500b8e4e50603. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SGB502340313.
      date published: 2026-07-18T12:14:37Z
    audio: Cantiga de Oxum
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 176.447
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.757
      additional property: Energy
        type: PropertyValue
        value: 0.372
      additional property: Speechiness
        type: PropertyValue
        value: 0.205
      additional property: Acousticness
        type: PropertyValue
        value: 0.875
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.008
      additional property: Liveness
        type: PropertyValue
        value: 0.278
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.839
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.116
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major