Doble Filo
type: MusicGroup
description: Doble Filo is a Cuban hip-hop band formed in 1995 and composed of Yrak Saenz and Edgaro Gonzalez. The band, which is often compared to Dilated Peoples and The Amorphous, won the Alamar rap Festival's
album: Los Duenos Del Show
  type: MusicAlbum
  date published: 2013-08-04
album: Rock Mi Propia Verdad
  type: MusicAlbum
  date published: 2015-01-01
track: Amor Internacional
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  by artist: Doble Filo
  in album: Gilles Peterson Presents: Havana Cultura (New Cuba Sound)
    type: MusicAlbum
    date published: 2009-10-26
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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 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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    date published: 2026-07-30T05:43:45Z
  audio: Amor Internacional
    type: AudioObject
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    additional property: Mode (Major/Minor)
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    additional property: Acousticness
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track: Que Tú Te Crees
  type: MusicRecording
  duration: PT4M58S
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  by artist: Doble Filo
  by artist: Pepito
  in album: Gilles Peterson Presents: Havana Cultura (New Cuba Sound)
    type: MusicAlbum
    date published: 2009-10-26
  isrc code: GBMEF0900164
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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 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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    date published: 2026-07-31T05:17:02Z
  audio: Que Tú Te Crees
    type: AudioObject
    additional property: Tempo (BPM)
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track: Amor Internacional
  type: MusicRecording
  duration: PT4M17S
  duration ms: 257013
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  by artist: Doble Filo
  in album: Cuban Fury - Original Soundtrack
    type: MusicAlbum
    date published: 2014-01-01
  isrc code: GBMEF0900169
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  subject of: OpenTimestamps Proof of Existence
  audio: Amor Internacional

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/960355

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMEF0900169

OTSTimestamp
type: PropertyValue
value: 2026-07-31T05:49:18Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82afc420d5ca6e54456f8c523487d189ec293085d185f5ee352377fc640c0e0. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/GBMEF0900169.
date published: 2026-07-31T05:49:18Z

Amor Internacional
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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: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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