El Negro Salvatierra
type: MusicGroup
genre: folklore argentino
popularity: 15
followers: 6019
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x39842a3fe78926e80ebdbecf58cb6127f3fb36c4c2958eb3f74e8cc40b5778d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953695
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953695
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73a2aab3-8440-4b59-b798-bb926f10e716.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73a2aab3-8440-4b59-b798-bb926f10e716.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/73a2aab3-8440-4b59-b798-bb926f10e716
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:42:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x39842a3fe78926e80ebdbecf58cb6127f3fb36c4c2958eb3f74e8cc40b5778d5","name":"El Negro Salvatierra","registered_at":"2026-06-14T16:32:10Z","symbol":"NIM0511176","token_address":"0x0d89ee9831e90c22d02457b94c564bde89846a17","type":"artist","uuid":"73a2aab3-8440-4b59-b798-bb926f10e716"}
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 0x39842a3fe78926e80ebdbecf58cb6127f3fb36c4c2958eb3f74e8cc40b5778d5. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73a2aab3-8440-4b59-b798-bb926f10e716.json and https://artists.proofprofile.net/proofs/artist/73a2aab3-8440-4b59-b798-bb926f10e716.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:45:57Z
  text: {"copyright_id":"0x39842a3fe78926e80ebdbecf58cb6127f3fb36c4c2958eb3f74e8cc40b5778d5","name":"El Negro Salvatierra","registered_at":"2026-06-14T16:32:10Z","symbol":"NIM0511176","token_address":"0x0d89ee9831e90c22d02457b94c564bde89846a17","type":"artist","uuid":"73a2aab3-8440-4b59-b798-bb926f10e716"}
album: Qué Tal!!!
  type: MusicAlbum
  date published: 2012-06-29
  track: Mandinga Abrime la Puerta
    type: MusicRecording
    duration: PT2M22S
    duration ms: 142210
    explicit: false
    by artist: El Negro Salvatierra
    in album: Qué Tal!!!
      type: MusicAlbum
      date published: 2012-06-29
    genre: folklore argentino
    isrc code: ARZ761200007
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T00:50:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc77438431f3b1f8638b832caaec66f9adf498d26ac1a2cafc5711a8716954825
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ761200007
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77438431f3b1f8638b832caaec66f9adf498d26ac1a2cafc5711a8716954825. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARZ761200007.
      date published: 2026-07-05T01:12:41Z
    audio: Mandinga Abrime la Puerta
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.922
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.831
      additional property: Energy
        type: PropertyValue
        value: 0.828
      additional property: Speechiness
        type: PropertyValue
        value: 0.082
      additional property: Acousticness
        type: PropertyValue
        value: 0.585
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.95
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.552
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor