Roberto Montalvo
type: MusicGroup
genre: mariachi
popularity: 25
followers: 621
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe75dac862f5af78a69b3b85bcb058564fcccc9dcc0f1528e520020b96903596d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2111ccb-71ad-4ce7-b04d-09a0c13a4713.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2111ccb-71ad-4ce7-b04d-09a0c13a4713.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a2111ccb-71ad-4ce7-b04d-09a0c13a4713
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe75dac862f5af78a69b3b85bcb058564fcccc9dcc0f1528e520020b96903596d","name":"Roberto Montalvo","registered_at":"2026-06-12T06:09:44Z","symbol":"NIM0210152","token_address":"0x9acc6e5f15d0fe94506e7aabbb95afb04a095bfb","type":"artist","uuid":"a2111ccb-71ad-4ce7-b04d-09a0c13a4713"}
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 0xe75dac862f5af78a69b3b85bcb058564fcccc9dcc0f1528e520020b96903596d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2111ccb-71ad-4ce7-b04d-09a0c13a4713.json and https://artists.proofprofile.net/proofs/artist/a2111ccb-71ad-4ce7-b04d-09a0c13a4713.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xe75dac862f5af78a69b3b85bcb058564fcccc9dcc0f1528e520020b96903596d","name":"Roberto Montalvo","registered_at":"2026-06-12T06:09:44Z","symbol":"NIM0210152","token_address":"0x9acc6e5f15d0fe94506e7aabbb95afb04a095bfb","type":"artist","uuid":"a2111ccb-71ad-4ce7-b04d-09a0c13a4713"}
album: Exitos de Juan Gabriel
  type: MusicAlbum
  date published: 2015-03-10
album: Éxitos de Juan Gabriel
  type: MusicAlbum
  date published: 2015-09-09
  track: Para Que Me Haces Llorar
    type: MusicRecording
    duration: PT2M53S
    duration ms: 173293
    explicit: false
    by artist: Roberto Montalvo
    in album: Éxitos de Juan Gabriel
      type: MusicAlbum
      date published: 2015-09-09
    genre: mariachi
    isrc code: MX4971509197
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T15:34:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1d68f77bafab45e4ceb96596c601a748d1d1e74c09e327e645f980165d0289b4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX4971509197
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x1d68f77bafab45e4ceb96596c601a748d1d1e74c09e327e645f980165d0289b4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX4971509197.
      date published: 2026-07-05T19:27:56Z
    audio: Para Que Me Haces Llorar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.035
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.615
      additional property: Energy
        type: PropertyValue
        value: 0.707
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.067
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.064
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.646
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.623
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Homenaje a Juan Gabriel
  type: MusicAlbum
  date published: 2018-01-24