Pistas & Backing Tracks
type: MusicGroup
popularity: 7
followers: 72
additional property: CopyrightID
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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 0xde68c545998c84cd08217ee3c0b3574542c25971d849617a7ec2a12517cc2c44. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7f9f6da-902e-498b-a324-067eed1744f6.json and https://artists.proofprofile.net/proofs/artist/a7f9f6da-902e-498b-a324-067eed1744f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
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album: Trumpet Backing Tracks
  type: MusicAlbum
  date published: 2021-04-27
album: Merengue BPM 160 Backing Tracks
  type: MusicAlbum
  date published: 2021-05-16
album: IIVI Pistas backing Tracks Trumpet
  type: MusicAlbum
  date published: 2021-07-31
album: Backing Tracks for Melodies
  type: MusicAlbum
  date published: 2021-09-07
album: Trumpet Guitar and Love
  type: MusicAlbum
  date published: 2021-09-25
album: Boleros Backing Tracks
  type: MusicAlbum
  date published: 2021-11-12
album: Sad in my Mind
  type: MusicAlbum
  date published: 2022-01-06
album: For Practice Trumpet Jazz
  type: MusicAlbum
  date published: 2022-01-20
album: Bossa Nova Practice
  type: MusicAlbum
  date published: 2022-01-22
  track: Bossa Nova In D Mayor
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    duration: PT3M8S
    duration ms: 188607
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    by artist: Pistas & Backing Tracks
    in album: Bossa Nova Practice
      type: MusicAlbum
      date published: 2022-01-22
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX38U2272573
    additional property: OTSTimestamp
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      value: 2026-07-18T08:19:09Z
    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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      date published: 2026-07-18T08:19:09Z
    audio: Bossa Nova In D Mayor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.215
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
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      additional property: Time Signature
        type: PropertyValue
        value: 4
      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: Liveness
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      additional property: Valence (Positivity)
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        value: 0.905
      additional property: Loudness (dB)
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        value: -17.641
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
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        value: Minor
album: My Piano and Me
  type: MusicAlbum
  date published: 2022-01-24
album: Samba for Practice
  type: MusicAlbum
  date published: 2022-01-31
album: Backing Tracks Brass Practice And More
  type: MusicAlbum
  date published: 2022-02-02
album: Backing Tracks Salsa trumpet practice
  type: MusicAlbum
  date published: 2022-02-04
album: Blues Backing Tracks Practice
  type: MusicAlbum
  date published: 2022-02-12
album: Slow Blues Backing Tracks
  type: MusicAlbum
  date published: 2022-02-16
album: Sentimientos en Piano
  type: MusicAlbum
  date published: 2022-03-25
album: Music to Fly
  type: MusicAlbum
  date published: 2022-05-29
album: Goove, Vol.1
  type: MusicAlbum
  date published: 2022-06-13
album: Saxophone Merengue
  type: MusicAlbum
  date published: 2024-02-18
album: Saxophone Merengue To Practice
  type: MusicAlbum
  date published: 2024-02-19