Cuarteto Guardia Vieja
type: MusicGroup
genre: tango
popularity: 13
followers: 1043
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b1b2bc19b92d6462cb03b694676d7d893760d11ec6f1762d8eeb9ab73fa2e38
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953808
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953808
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4ee2346-f182-4a85-9697-de370a58c46e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4ee2346-f182-4a85-9697-de370a58c46e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f4ee2346-f182-4a85-9697-de370a58c46e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:45:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6b1b2bc19b92d6462cb03b694676d7d893760d11ec6f1762d8eeb9ab73fa2e38","name":"Cuarteto Guardia Vieja","registered_at":"2026-06-15T06:14:20Z","symbol":"NIM0707384","token_address":"0x63d9afa42334aae71e8766ba4b931a0e8995654f","type":"artist","uuid":"f4ee2346-f182-4a85-9697-de370a58c46e"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1b2bc19b92d6462cb03b694676d7d893760d11ec6f1762d8eeb9ab73fa2e38. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4ee2346-f182-4a85-9697-de370a58c46e.json and https://artists.proofprofile.net/proofs/artist/f4ee2346-f182-4a85-9697-de370a58c46e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T16:45:15Z
  text: {"copyright_id":"0x6b1b2bc19b92d6462cb03b694676d7d893760d11ec6f1762d8eeb9ab73fa2e38","name":"Cuarteto Guardia Vieja","registered_at":"2026-06-15T06:14:20Z","symbol":"NIM0707384","token_address":"0x63d9afa42334aae71e8766ba4b931a0e8995654f","type":"artist","uuid":"f4ee2346-f182-4a85-9697-de370a58c46e"}
album: El Gato Del Amor
  type: MusicAlbum
  date published: 2017-06-22
  track: Este Amor
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188786
    explicit: false
    by artist: Agustín Irusta
    by artist: Lucio Demare
    in album: El Gato Del Amor
      type: MusicAlbum
      date published: 2017-06-22
    popularity: 3
    genre: tango
    genre: bolero
    isrc code: CA5KR1557526
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T14:05:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbcecd5ee7a27d928e16a0ffaf1e30a64432893cf3c21152ec34c5f5b4735ee68
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1557526
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcecd5ee7a27d928e16a0ffaf1e30a64432893cf3c21152ec34c5f5b4735ee68. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1557526 — a six-check JSON result.
      date published: 2026-07-08T03:20:19Z
    audio: Este Amor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.669
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.361
      additional property: Energy
        type: PropertyValue
        value: 0.214
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.996
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.097
      additional property: Liveness
        type: PropertyValue
        value: 0.238
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.392
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.565
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major