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type: MusicGroup
genre: tango
description: Ivo Pelay (May 5, 1893 – August 28, 1959) was one of Argentina's most prolific playwrights of the early 20th century. Biography Born Guillermo Juan Robustiano Pichot in Buenos Aires, Pelay wrote ov
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followers: 10
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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 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
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track: Adiós pampa mía
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  by artist: Francisco Canaro
  by artist: Ivo Pelay
  by artist: Mariano Mores
  by artist: Violines De Pego
  in album: Un paraiso es mi Cuba
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    date published: 2019-11-11
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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 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
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    date published: 2026-07-31T05:17:02Z
  audio: Adiós pampa mía
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track: Unidos Por El Tango - Remasterizado 2023
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  by artist: Enrique Pedro Maroni
  by artist: Ivo Pelay
  by artist: Unknown
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  by artist: Francisco Canaro
  by artist: Pascual Contursi
  by artist: Mariano Mores
  by artist: Luis Cobos
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-29T19:35:34Z
  audio: Unidos Por El Tango - Remasterizado 2023
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track: Unidos por el Tango - Remasterizado
track: Adios pampa mia (Instrumental)
track: Adios, Pampa Mia

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Unidos por el Tango - Remasterizado
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by artist: Luis Cobos
by artist: Alfredo Le Pera
by artist: Gerardo Matos Rodríguez
by artist: Ivo Pelay
by artist: Carlos Gardel
by artist: Enrique Pedro Maroni
by artist: Francisco Canaro
by artist: Mariano Mores
by artist: Pascual Contursi
by artist: Royal Philharmonic Orchestra
in album: Fantasías (Remasterizado)
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genre: classical
genre: orchestra
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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 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
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  date published: 2026-07-02T03:30:09Z
audio: Unidos por el Tango - Remasterizado
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Adios pampa mia (Instrumental)
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by artist: Marianito Mores
by artist: Ivo Pelay
by artist: Francisco Canaro
in album: Vive les grands orchestres: 125 tubes de la chanson française par les grands orchestres des années 50 (Versions instrumentales)
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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 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
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  date published: 2026-07-08T03:20:19Z
audio: Adios pampa mia (Instrumental)
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Adios, Pampa Mia
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by artist: Ivo Pelay
by artist: Mariano Mores
by artist: Julio Iglesias
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additional property: OTSVerificationAPI
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa551f2892bbc4f0a58aa1c981c378e502a55887c3ad100b58ce2fe02e85c3d75. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLB639602080.
  date published: 2026-07-30T09:57:33Z
audio: Adios, Pampa Mia
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