Pedro Laurenz y su Orquesta Tipica
type: MusicGroup
genre: tango
popularity: 2
followers: 471
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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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
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  date published: 2026-06-19T03:51:26Z
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album: The Roots Of Tango - Jewels Of The 50's, Vol. 1
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  date published: 2014-04-11
album: Tango - An Anthology
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  date published: 2011-07-15
album: The Roots Of Tango - Jewels Of The 30's, Vol. 3
  type: MusicAlbum
  date published: 2014-04-11
  track: Silueta Porteña
    type: MusicRecording
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    by artist: Francisco Canaro Y Su Orquesta Tipica
    by artist: Roberto Maida
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      type: MusicAlbum
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d546257c8605888d2378242916c2b3250d82bb01deaa4f84c7257e30a7c718. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL61466941.
      date published: 2026-07-08T03:22:41Z
    audio: Silueta Porteña
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      additional property: Danceability
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album: The Roots of Tango - Jewels Of The 40's, Vol. 6
  type: MusicAlbum
  date published: 2014-01-01
album: The Roots of Tango - Jewels Of The 40's, Vol.3
  type: MusicAlbum
  date published: 2014-01-01
  track: Tu Intimo Secreto
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    by artist: Jorge Durán
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      type: MusicAlbum
      date published: 2014-01-01
    popularity: 5
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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
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      date published: 2026-07-08T03:22:41Z
    audio: Tu Intimo Secreto
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      additional property: Valence (Positivity)
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album: Tango Federico: A Dancemaster's Choice
album: 100 Años En 100 Tangos
album: Una Hora en Buenos Aires, Vol. 1
album: Una Antología del Tango - "Decarísimo"
album: Great Argentine Tangos (1940 - 1960), Vol. 2
album: The Roots of Tango - Jewels Of The 40's, Vol. 7
album: The Roots of Tango - Jewels Of The 40's , Vol. 10
album: The Roots of Tango - Jewels Of The 40's, Vol.8
album: The Roots of Tango - Jewels Of The 40's, Vol. 5
album: The Roots of Tango - Jewels Of The 40's, Vol. 9
album: Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
album: The Roots Of Tango - Jewels Of The 40's, Vol. 11
album: The Roots of Tango - Jewels of the 50's, Vol. 2
album: Great Argentine Tangos: Vol.2 1940-1960

De Puro Guapo
type: MusicRecording
duration: PT2M45S
duration ms: 165333
explicit: false
by artist: Pedro Laurenz y su Orquesta Tipica
in album: Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
  type: MusicAlbum
  date published: 2004-07-15
genre: tango
isrc code: ARF034000032
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: De Puro Guapo
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  additional property: Danceability
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  additional property: Speechiness
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No Me Extraña
type: MusicRecording
duration: PT2M42S
duration ms: 162480
explicit: false
by artist: Pedro Laurenz y su Orquesta Tipica
in album: Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
  type: MusicAlbum
  date published: 2004-07-15
genre: tango
isrc code: ARF034000033
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d39c5ced826e29a5def7a13dbec06297a94af9314f9a2a9a84f2f329a5db2e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF034000033.
  date published: 2026-07-08T08:56:20Z
audio: No Me Extraña
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Mascarita
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by artist: Pedro Laurenz y su Orquesta Tipica
in album: Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
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genre: tango
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22472eb916a0ac2aaa32374ae77f6e848286821b284ab6228229b3df0b37c60. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF034000034.
  date published: 2026-07-08T08:56:20Z
audio: Mascarita
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Abandono
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duration: PT2M30S
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by artist: Pedro Laurenz y su Orquesta Tipica
in album: Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
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genre: tango
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T00:15:43Z
audio: Abandono
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additional property: OTSTimestamp
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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 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

Maria Remedios
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duration ms: 162693
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by artist: Pedro Laurenz y su Orquesta Tipica
in album: Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
  type: MusicAlbum
  date published: 2004-07-15
genre: tango
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:30:38Z
audio: Maria Remedios
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additional property: CopyrightID
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additional property: OTSTimestamp
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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 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

Speechiness
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Tango Federico: A Dancemaster's Choice
type: MusicAlbum
date published: 2012-04-30

100 Años En 100 Tangos
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date published: 1999-11-17
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  genre: tango
  genre: candombe
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  additional property: OTSVerificationAPI
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  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
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e1a51b07f244f27efe0f29861d9d00ddb95750b5c82e529d926bb5c0cbbc5d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF039821118.
    date published: 2026-07-08T03:20:19Z
  audio: La Madrugada
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track: Nostalgias
  type: MusicRecording
  duration: PT3M2S
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  by artist: Francisco Lomuto y su Orquesta Típica
  in album: 100 Años En 100 Tangos
    type: MusicAlbum
    date published: 1999-11-17
  popularity: 1
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb094d09507bee6c79b226d53ad47b97256f42474410ba94f20a72987e58e48c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARF039500189.
    date published: 2026-07-08T03:22:41Z
  audio: Nostalgias
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Una Hora en Buenos Aires, Vol. 1
type: MusicAlbum
date published: 1987-01-01

Una Antología del Tango - "Decarísimo"
type: MusicAlbum
date published: 2009-10-30

Great Argentine Tangos (1940 - 1960), Vol. 2
type: MusicAlbum
date published: 2011-09-02

The Roots of Tango - Jewels Of The 40's, Vol. 7
type: MusicAlbum
date published: 2014-01-01

The Roots of Tango - Jewels Of The 40's , Vol. 10
type: MusicAlbum
date published: 2014-01-01

The Roots of Tango - Jewels Of The 40's, Vol.8
type: MusicAlbum
date published: 2014-01-01

The Roots of Tango - Jewels Of The 40's, Vol. 5
type: MusicAlbum
date published: 2014-01-01

The Roots of Tango - Jewels Of The 40's, Vol. 9
type: MusicAlbum
date published: 2014-04-11

Serie 78 RPM: Orquestas De Antaño - Pedro Laurenz
type: MusicAlbum
date published: 2004-07-15
track: De Puro Guapo
track: No Me Extraña
track: Mascarita
track: Amurado
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  by artist: Pedro Laurenz
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    type: MusicAlbum
    date published: 2004-07-15
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b0849e60860710eed68ffb196e8684f48048457bd44e5d65a45162dc74e900. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF039901039.
    date published: 2026-07-02T03:30:09Z
  audio: Amurado
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track: Abandono
track: Maria Remedios

The Roots Of Tango - Jewels Of The 40's, Vol. 11
type: MusicAlbum
date published: 2014-01-01

The Roots of Tango - Jewels of the 50's, Vol. 2
type: MusicAlbum
date published: 2014-04-11

Great Argentine Tangos: Vol.2 1940-1960
type: MusicAlbum
date published: 2022-01-01