Mateo Flecha
type: MusicGroup
genre: medieval
description: Mateo Flecha (Catalan: Mateu Fletxa; 1481–1553) was a Spanish composer born in Kingdom of Aragon, in the region of Prades. He is sometimes known as "El Viejo" (the elder) to distinguish him from his n
popularity: 11
followers: 906
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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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  date published: 2026-06-15T13:44:27Z
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album: Ríu Ríu Chíu
  type: MusicAlbum
  date published: 2018-11-10
album: Ensaladas
  type: MusicAlbum
  date published: 2022-09-23
track: Flecha: Cancionero de Uppsala: No. 46, "Riu, riu, chiu, la guarda ribera"
  type: MusicRecording
  duration: PT2M0S
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  by artist: Mateo Flecha
  by artist: Choir of King's College, Cambridge
  by artist: Stephen Cleobury
  in album: Classic Christmas Carols
    type: MusicAlbum
    date published: 2007-12-07
  popularity: 3
  isrc code: GBAYC9803151
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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
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bb26ffce8ca59fdea1abda96c44c326515fadb2f7154c84baf321562397a07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC9803151.
    date published: 2026-07-08T03:53:27Z
  audio: Flecha: Cancionero de Uppsala: No. 46, "Riu, riu, chiu, la guarda ribera"
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.064
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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: 0.691
    additional property: Loudness (dB)
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      value: -30.634
    additional property: Key Name
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    additional property: Mode Name
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track: Dindirindín. Ensalada La Bomba
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200253
  explicit: false
  by artist: Mateo Flecha
  by artist: Enrike Solinís
  by artist: Euskal Barrokensemble
  in album: Juan Sebastian Elkano
    type: MusicAlbum
    date published: 2019-06-20
  isrc code: CH4211900992
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T20:41:57Z
  audio: Dindirindín. Ensalada La Bomba
    type: AudioObject
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    additional property: Loudness (dB)
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    additional property: Mode Name

Instrumentalness
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Liveness
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value: 0.271

Valence (Positivity)
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value: 0.714

Loudness (dB)
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Key Name
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value: C

Mode Name
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