Manuel Saumell
type: MusicGroup
description: thumb|right|200px| Manuel Saumell Robredo (19 April 1818Orovio, Helio 2004. Cuban music from A to Z. (1817 is given as date of birth by Carpentier and Cristóbal Díaz Ayala) – 14 August 1870), was a C
popularity: 4
followers: 258
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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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 0xeef2ad75fb82279c449a8feeb7cd7a7dabbcf8cfc59dd1ee3078319711119dc5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63a516ae-f76d-45a7-97f9-217d08e3a1d5.json and https://artists.proofprofile.net/proofs/artist/63a516ae-f76d-45a7-97f9-217d08e3a1d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Cervantes & Saumell: Danzas y Contradanzas (CD2)
  type: MusicAlbum
  date published: 2011
album: Cervantes & Saumell: Danzas y Contradanzas (CD2)
  type: MusicAlbum
  date published: 2011-03-10
  track: El pañuelo de Pepa
album: Cervantes & Saumell: Danzas y Contradanzas (CD2)
  type: MusicAlbum
  date published: 2011-03-10

El pañuelo de Pepa
type: MusicRecording
duration: PT2M4S
duration ms: 124792
explicit: false
by artist: Manuel Saumell
in album: Cervantes & Saumell: Danzas y Contradanzas (CD2)
  type: MusicAlbum
  date published: 2011-03-10
isrc code: ESAAI0256675
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESAAI0256675
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
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 0xaefd8443d9831b1c001aa7969a955cbe629b6a8890bac07b4c28bc7abfa0173b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESAAI0256675.
  date published: 2026-07-08T03:39:04Z
audio: El pañuelo de Pepa
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
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    value: 7
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.398
  additional property: Energy
    type: PropertyValue
    value: 0.108
  additional property: Speechiness
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    value: 0.059
  additional property: Acousticness
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    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.873
  additional property: Liveness
    type: PropertyValue
    value: 0.195
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.28
  additional property: Loudness (dB)
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    value: -28.194
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor