Tuna Imperial de la FES Iztacala-UNAM
type: MusicGroup
genre: traditional music
popularity: 6
followers: 267
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aaa39bb7-8109-4958-9147-1a32bcabca56.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aaa39bb7-8109-4958-9147-1a32bcabca56.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
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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 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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced7a7491a1a9983f28183f58c4aba66b3f97a3c28a23e85be3be8e3392c3d1e. 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/aaa39bb7-8109-4958-9147-1a32bcabca56.json and https://artists.proofprofile.net/proofs/artist/aaa39bb7-8109-4958-9147-1a32bcabca56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xced7a7491a1a9983f28183f58c4aba66b3f97a3c28a23e85be3be8e3392c3d1e","name":"Tuna Imperial de la FES Iztacala-UNAM","registered_at":"2026-06-20T09:25:49Z","symbol":"NIM1579342","token_address":"0xa29a6b913c2a9255a5f028b2148b03aa571b6430","type":"artist","uuid":"aaa39bb7-8109-4958-9147-1a32bcabca56"}
album: Concurso Nacional de Estudiantinas (En Vivo)
  type: MusicAlbum
  date published: 2020-08-21
  track: Pequeña flor de primavera
    type: MusicRecording
    duration: PT4M8S
    duration ms: 248031
    explicit: false
    by artist: Tuna Imperial de la FES Iztacala-UNAM
    in album: Concurso Nacional de Estudiantinas (En Vivo)
      type: MusicAlbum
      date published: 2020-08-21
    genre: traditional music
    isrc code: QZK6L2006955
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T15:01:29+00:00
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    additional property: OTSHash
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    additional property: OTSBitcoinBlockVerifyURL
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      value: https://blockstream.info/api/block-height/958901
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2006955
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:07:00Z
    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
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5e497c2fbfe375001401411b49bef5d60e8c384cee054c6a67cc48922e3fdb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZK6L2006955.
      date published: 2026-07-20T15:07:00Z
    audio: Pequeña flor de primavera
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 183.288
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.295
      additional property: Energy
        type: PropertyValue
        value: 0.419
      additional property: Speechiness
        type: PropertyValue
        value: 0.054
      additional property: Acousticness
        type: PropertyValue
        value: 0.443
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.962
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.618
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.056
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Un paseo con la Tuna
  type: MusicAlbum
  date published: 2021-02-05
album: El sentimiento hecho caballero
  type: MusicAlbum
  date published: 2021-09-30
album: La Tuna Imperial, Vol. 1
  type: MusicAlbum
  date published: 2022-06-20
album: La Tuna más tradicional.... ¡La Tuna Imperial!
  type: MusicAlbum
  date published: 2024-08-25