Los Play Backs
type: MusicGroup
popularity: 10
followers: 293
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc9e12f2-6052-4b37-9d55-f2da2c803503.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fc9e12f2-6052-4b37-9d55-f2da2c803503
additional property: OTSTimestamp
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258059fc77e0a7743bcc8ac590649674e13a8b6edf78011e6805cd8ed1c95ea3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc9e12f2-6052-4b37-9d55-f2da2c803503.json and https://artists.proofprofile.net/proofs/artist/fc9e12f2-6052-4b37-9d55-f2da2c803503.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x258059fc77e0a7743bcc8ac590649674e13a8b6edf78011e6805cd8ed1c95ea3","name":"Los Play Backs","registered_at":"2026-06-21T17:41:45Z","symbol":"NIM1988818","token_address":"0xc76243319d58d5a8e83d8438742c8aef193490af","type":"artist","uuid":"fc9e12f2-6052-4b37-9d55-f2da2c803503"}
album: Karaoke Canta Como Palito, Leo Y Favio
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Juglares
  type: MusicAlbum
  date published: 1980-01-01
album: Las Canciones de las Películas de Disney en Castellano
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Canta Como Sandro
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Las Canciones De Soda Stereo
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Latino Bailable
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Baladas En Español
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Canta Como Andrés Calamaro
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke de María Elena Walsh
  type: MusicAlbum
  date published: 1980-01-01
album: Karaoke Latino Bailable (Versión Tropical)
  type: MusicAlbum
  date published: 2004-04-23
album: Karaoke Baladistas
  type: MusicAlbum
  date published: 2005-12-02
album: Karaoke Canta Como Sandro
  type: MusicAlbum
  date published: 2007-12-03
album: Karaoke Canta Como Ricardo Montaner
  type: MusicAlbum
  date published: 2007-12-03
album: Cine Collection Vol1
  type: MusicAlbum
  date published: 2009
  track: The John Dunbar Theme - Del Film "Dancing with Wolves
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    in album: Cine Collection Vol1
      type: MusicAlbum
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    additional property: CopyrightID
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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 0x2520cd23a71283523316b0a529d6b96e70c8667dfea4291c5e56930f522d879c. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:30Z), 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/ARF060901748.
      date published: 2026-07-19T15:52:30Z
    audio: The John Dunbar Theme - Del Film "Dancing with Wolves
      type: AudioObject
      additional property: Tempo (BPM)
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        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.832
      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.127
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.571
      additional property: Key Name
        type: PropertyValue
        value: Eb
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        type: PropertyValue
        value: Major
album: Cine Collection Vol.2
  type: MusicAlbum
  date published: 2010-01-01
album: Cine Collection Vol.3
  type: MusicAlbum
  date published: 2010-01-01
  track: Fargo, North Dakota - from Fargo
    type: MusicRecording
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    duration ms: 169306
    explicit: false
    by artist: Los Play Backs
    in album: Cine Collection Vol.3
      type: MusicAlbum
      date published: 2010-01-01
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      type: PropertyValue
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Fargo, North Dakota - from Fargo

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42555e3b646b647d7999c32a95068fe9c1efd4f1898f757d4d155a7954fc3c7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARF060901776.
date published: 2026-07-05T18:48:28Z

Fargo, North Dakota - from Fargo
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 108.41
additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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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
  type: PropertyValue
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additional property: Liveness
  type: PropertyValue
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additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.078
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.523
additional property: Key Name
  type: PropertyValue
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additional property: Mode Name
  type: PropertyValue
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