María Elena Sandoval
type: MusicGroup
genre: bolero
genre: ranchera
popularity: 15
followers: 509
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5bf005256fffd2a02140b27af70ac24417d797b1bc442724fe5b648713033607
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953620
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953620
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e352a27-99e0-406e-8626-eb8d6c6b1743.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e352a27-99e0-406e-8626-eb8d6c6b1743.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1e352a27-99e0-406e-8626-eb8d6c6b1743
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:36:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5bf005256fffd2a02140b27af70ac24417d797b1bc442724fe5b648713033607","name":"María Elena Sandoval","registered_at":"2026-06-14T07:33:53Z","symbol":"NIM0382757","token_address":"0xc8f8a40c228b6f69386f7343eb34561f0c1d2abc","type":"artist","uuid":"1e352a27-99e0-406e-8626-eb8d6c6b1743"}
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 0x5bf005256fffd2a02140b27af70ac24417d797b1bc442724fe5b648713033607. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e352a27-99e0-406e-8626-eb8d6c6b1743.json and https://artists.proofprofile.net/proofs/artist/1e352a27-99e0-406e-8626-eb8d6c6b1743.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:36:10Z
  text: {"copyright_id":"0x5bf005256fffd2a02140b27af70ac24417d797b1bc442724fe5b648713033607","name":"María Elena Sandoval","registered_at":"2026-06-14T07:33:53Z","symbol":"NIM0382757","token_address":"0xc8f8a40c228b6f69386f7343eb34561f0c1d2abc","type":"artist","uuid":"1e352a27-99e0-406e-8626-eb8d6c6b1743"}
album: Si Fuera Libre
  type: MusicAlbum
  date published: 1960-12-13
  track: Acuérdate De Mí
    type: MusicRecording
    duration: PT2M26S
    duration ms: 146653
    explicit: false
    by artist: María Elena Sandoval
    in album: Si Fuera Libre
      type: MusicAlbum
      date published: 1960-12-13
    genre: bolero
    genre: ranchera
    isrc code: DEXO52454219
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T18:15:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7f92b56ba320eddaf1505c40cf4fba22ca58390d75c77731367a3168a54637f3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958316
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958316
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52454219
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T19:42:29Z
    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 0x7f92b56ba320eddaf1505c40cf4fba22ca58390d75c77731367a3168a54637f3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEXO52454219.
      date published: 2026-07-16T19:42:29Z
    audio: Acuérdate De Mí
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 118.04
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.521
      additional property: Energy
        type: PropertyValue
        value: 0.278
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.995
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.459
      additional property: Liveness
        type: PropertyValue
        value: 0.341
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.527
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.813
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Las Canciones de María Elena Sandoval
  type: MusicAlbum
  date published: 1961-11-29
album: Unica
  type: MusicAlbum
  date published: 2018-09-25