Cesar Campos
type: MusicGroup
popularity: 3
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7061cc6f9acd5a843f0301b088ba8ad4368fe8d8a2ee63e090c6effd5a9c3ff2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab3d95e1-2cc4-4d07-abf5-1852272f2c82.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab3d95e1-2cc4-4d07-abf5-1852272f2c82.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab3d95e1-2cc4-4d07-abf5-1852272f2c82
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7061cc6f9acd5a843f0301b088ba8ad4368fe8d8a2ee63e090c6effd5a9c3ff2","name":"Cesar Campos","registered_at":"2026-06-20T09:38:41Z","symbol":"NIM1582263","token_address":"0xce4ed53264a1a69c72fa081daf23d243f4d4e961","type":"artist","uuid":"ab3d95e1-2cc4-4d07-abf5-1852272f2c82"}
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 0x7061cc6f9acd5a843f0301b088ba8ad4368fe8d8a2ee63e090c6effd5a9c3ff2. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab3d95e1-2cc4-4d07-abf5-1852272f2c82.json and https://artists.proofprofile.net/proofs/artist/ab3d95e1-2cc4-4d07-abf5-1852272f2c82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x7061cc6f9acd5a843f0301b088ba8ad4368fe8d8a2ee63e090c6effd5a9c3ff2","name":"Cesar Campos","registered_at":"2026-06-20T09:38:41Z","symbol":"NIM1582263","token_address":"0xce4ed53264a1a69c72fa081daf23d243f4d4e961","type":"artist","uuid":"ab3d95e1-2cc4-4d07-abf5-1852272f2c82"}
album: Libro Abierto
  type: MusicAlbum
  date published: 2025-10-12
  track: Libro Abierto
    type: MusicRecording
    duration: PT2M44S
    duration ms: 164110
    explicit: false
    by artist: Cesar Campos
    in album: Libro Abierto
      type: MusicAlbum
      date published: 2025-10-12
    isrc code: QT3F92569079
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T17:15:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x957cfb64bc700177da2ef7b8ec279f65a41439c537e483d5a40f2fe2025cc74e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958448
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958448
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F92569079
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:49:21Z
    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 0x957cfb64bc700177da2ef7b8ec279f65a41439c537e483d5a40f2fe2025cc74e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QT3F92569079.
      date published: 2026-07-17T19:49:21Z
    audio: Libro Abierto
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.03
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.685
      additional property: Energy
        type: PropertyValue
        value: 0.287
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.73
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.081
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.655
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.603
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major