La Farsa del Dr. Berretin
type: MusicGroup
genre: argentine rock
popularity: 10
followers: 1618
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1afdfc948c2138d026381aab1dc3b735067027ffb349f29e8f20d26b5e7ee0f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e6f1cb6-0b09-4c90-9ad5-34cc251693ea.json and https://artists.proofprofile.net/proofs/artist/4e6f1cb6-0b09-4c90-9ad5-34cc251693ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
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album: La Farsa del Dr. Berretin
  type: MusicAlbum
  date published: 2017-12-15
album: En Vivo the Roxy (En vivo)
  type: MusicAlbum
  date published: 2019-08-01
  track: Perdido (Vivo the Roxy) - En vivo
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    by artist: La Farsa del Dr. Berretin
    in album: En Vivo the Roxy (En vivo)
      type: MusicAlbum
      date published: 2019-08-01
    genre: argentine rock
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    additional property: OTSTimestamp
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      value: 2026-07-19T17:42:53Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8fec485d825f4b426cd020ddb2097d7519ab054066bc5935d6bbc973517025. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:53Z), 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/QZFZ41977767.
      date published: 2026-07-19T17:42:53Z
    audio: Perdido (Vivo the Roxy) - En vivo
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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        value: -7.818
      additional property: Key Name
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        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Acariciando Un Sueño
  type: MusicAlbum
  date published: 2019-11-04
  track: Hoy
    type: MusicRecording
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    by artist: La Farsa del Dr. Berretin
    in album: Acariciando Un Sueño
      type: MusicAlbum
      date published: 2019-11-04
    genre: argentine rock
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    additional property: OTSVerificationAPI
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    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 0xa705f13dcdf8845071d86c71e916083c50222a9d064a2c10aa388d4ce199c0a3. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/ARRJN1900003.
      date published: 2026-07-18T17:06:26Z
    audio: Hoy
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Me Han Contado
album: Nova Insula Vtopi
album: No Quiero Verte Más
album: Te Sorprenderias

Liveness
type: PropertyValue
value: 0.279

Valence (Positivity)
type: PropertyValue
value: 0.703

Loudness (dB)
type: PropertyValue
value: -6.172

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Major

Me Han Contado
type: MusicAlbum
date published: 2021-12-06

Nova Insula Vtopi
type: MusicAlbum
date published: 2022-02-19

No Quiero Verte Más
type: MusicAlbum
date published: 2023-04-20

Te Sorprenderias
type: MusicAlbum
date published: 2023-09-14