El Cesar
type: MusicGroup
genre: cumbia
popularity: 6
followers: 940
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7c266ee5d7c111fc4887fedbbd870c5e90aba93df976abbb4d7d3d0c53039c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea8ab3e3-b913-4c83-997f-757774212aac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea8ab3e3-b913-4c83-997f-757774212aac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ea8ab3e3-b913-4c83-997f-757774212aac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7c266ee5d7c111fc4887fedbbd870c5e90aba93df976abbb4d7d3d0c53039c9","name":"El Cesar","registered_at":"2026-06-21T10:53:18Z","symbol":"NIM1904029","token_address":"0x940fc2e61d910bda461d8f4f539978c0dc984893","type":"artist","uuid":"ea8ab3e3-b913-4c83-997f-757774212aac"}
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 0xb7c266ee5d7c111fc4887fedbbd870c5e90aba93df976abbb4d7d3d0c53039c9. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea8ab3e3-b913-4c83-997f-757774212aac.json and https://artists.proofprofile.net/proofs/artist/ea8ab3e3-b913-4c83-997f-757774212aac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xb7c266ee5d7c111fc4887fedbbd870c5e90aba93df976abbb4d7d3d0c53039c9","name":"El Cesar","registered_at":"2026-06-21T10:53:18Z","symbol":"NIM1904029","token_address":"0x940fc2e61d910bda461d8f4f539978c0dc984893","type":"artist","uuid":"ea8ab3e3-b913-4c83-997f-757774212aac"}
album: 15 Grandes Éxitos Que Nunca Escuchaste
  type: MusicAlbum
  date published: 2014-04-07
  track: Masoquista
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192786
    explicit: false
    by artist: El Cesar
    in album: 15 Grandes Éxitos Que Nunca Escuchaste
      type: MusicAlbum
      date published: 2014-04-07
    genre: cumbia
    isrc code: ARG991017782
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T16:51:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa1c5f5e728cd2355bd4573ca7ebd3460ed143776f8db5577b82daf8475f982a0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959037
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959037
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARG991017782
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T16:59:47Z
    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 0xa1c5f5e728cd2355bd4573ca7ebd3460ed143776f8db5577b82daf8475f982a0. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARG991017782.
      date published: 2026-07-21T16:59:47Z
    audio: Masoquista
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 179.909
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.65
      additional property: Energy
        type: PropertyValue
        value: 0.486
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.112
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.814
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.492
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Desde el Corazón
  type: MusicAlbum
  date published: 2014-10-27
  track: De Nada Sirve Nuestro Amor
    type: MusicRecording
    duration: PT3M55S
    duration ms: 235213
    explicit: false
    by artist: El Cesar
    in album: Desde el Corazón
      type: MusicAlbum
      date published: 2014-10-27
    genre: cumbia
    isrc code: ARG991018355
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T09:14:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x78d8581720cd5a75e65f539440aefc0fed6e4c5ed0fbc635f18b540993413271
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARG991018355
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T12:16:20Z
    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 0x78d8581720cd5a75e65f539440aefc0fed6e4c5ed0fbc635f18b540993413271. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:20Z), 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/ARG991018355.
      date published: 2026-07-20T12:16:20Z
    audio: De Nada Sirve Nuestro Amor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.503
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.722
      additional property: Energy
        type: PropertyValue
        value: 0.762
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.3
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.132
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Por Amarte Así
album: Coleccionista de Canciones

Valence (Positivity)
type: PropertyValue
value: 0.881

Loudness (dB)
type: PropertyValue
value: -5.178

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Por Amarte Así
type: MusicAlbum
date published: 2023-12-29

Coleccionista de Canciones
type: MusicAlbum
date published: 2024-06-21