Fernando Rosas
type: MusicGroup
genre: bolero
genre: mariachi
genre: música mexicana
genre: ranchera
description: Fernando José Mendes Rosas (born 18 April 1946) is a Portuguese historian, professor and politician, being one of the founders of the Left Bloc. Biography Early life and education Rosas was bor
popularity: 15
followers: 3790
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additional property: CopyrightChainExplorerURL
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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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album: Carta A Ufenia
  type: MusicAlbum
  date published: 1954-02-17
album: Nochecita y Otros Éxitos (Remaster from the Original Azteca Tapes)
  type: MusicAlbum
  date published: 1968-01-01
album: Nochecita y Otros Éxitos (Remaster from the Original Azteca Tapes)
  type: MusicAlbum
  date published: 1968-01-01
album: RCA 100 Años de Música
  type: MusicAlbum
  date published: 2001-06-02
  track: Las Otras Mañanitas
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      type: MusicAlbum
      date published: 2001-06-02
    genre: bolero
    genre: mariachi
    genre: música mexicana
    genre: ranchera
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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
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      date published: 2026-07-17T15:15:14Z
    audio: Las Otras Mañanitas
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
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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: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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album: Fernando Rosas Canta a José Agustín Ramírez y al Estado de Guerrero
  type: MusicAlbum
  date published: 2007-09-21
  track: Por los Caminos del Sur
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    duration: PT2M51S
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    explicit: false
    by artist: Fernando Rosas
    in album: Fernando Rosas Canta a José Agustín Ramírez y al Estado de Guerrero
      type: MusicAlbum
      date published: 2007-09-21
    genre: bolero
    genre: mariachi
    genre: música mexicana
    genre: ranchera
    isrc code: MXF019800201
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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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc345f0d20c9b2f7791dc918e5cd59b2426d2a12b7891b52715c8dfca2a4daaed. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:05:09Z), 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/MXF019800201.
      date published: 2026-07-21T02:05:09Z
    audio: Por los Caminos del Sur
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Time Signature
      additional property: Danceability
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      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: El Buen Humor de Chava Flores en la Voz de Fernando Rosas
album: Éxitos de Ayer
album: Fernando Rosas
album: El Papalote
album: Penjamo
album: El Ruiseñor de Guerrero
track: Cosas del Ayer
track: Pénjamo

Cosas del Ayer
type: MusicRecording
duration: PT3M5S
duration ms: 185000
explicit: false
by artist: Fernando Rosas
in album: Tesoros de Colección - Las Estrellas de la Hora Azul
  type: MusicAlbum
  date published: 2014-07-29
isrc code: MXF010101015
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064e3674af00d3b288e0298f600dbe1417029da49a87851dcd7c5be372ffb008. 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/MXF010101015.
  date published: 2026-07-08T03:53:27Z
audio: Cosas del Ayer
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.469
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.11
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
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Pénjamo
type: MusicRecording
duration: PT3M17S
duration ms: 197213
explicit: false
by artist: Fernando Rosas
in album: RCA 100 Anos De Musica - Segunda Parte (Lo Mejor Del Folklore Mexicano Vol. 2)
  type: MusicAlbum
  date published: 2002-11-07
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ae21d23540fae708395c344c7be8e2ea694e56243c9cae66db4d44c1d01581. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/MXF010100991.
  date published: 2026-07-29T23:20:38Z
audio: Pénjamo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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    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
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.138
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: MXF010100991
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: OTSVerificationAPI
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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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 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

Time Signature
type: PropertyValue
value: 3

Danceability
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value: 0.61

Energy
type: PropertyValue
value: 0.237

Speechiness
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value: 0.046

Acousticness
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Instrumentalness
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value: 0.676

Liveness
type: PropertyValue
value: 0.118

Valence (Positivity)
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value: 0.731

Loudness (dB)
type: PropertyValue
value: -15.911

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

El Buen Humor de Chava Flores en la Voz de Fernando Rosas
type: MusicAlbum
date published: 2012-04-02
track: Dos Horas de Balazos
  type: MusicRecording
  duration: PT3M17S
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  explicit: false
  by artist: Fernando Rosas
  in album: El Buen Humor de Chava Flores en la Voz de Fernando Rosas
    type: MusicAlbum
    date published: 2012-04-02
  genre: bolero
  genre: mariachi
  genre: música mexicana
  genre: ranchera
  isrc code: MXF019100013
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  additional property: OTSHash
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956772
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF019100013
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:01:46Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239bda294cc22cbfe6b60fa62b7a06936a777771f731132ae380bc317a635b91. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF019100013.
    date published: 2026-07-05T10:01:46Z
  audio: Dos Horas de Balazos
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.519
    additional property: Energy
      type: PropertyValue
      value: 0.154
    additional property: Speechiness
      type: PropertyValue
      value: 0.061
    additional property: Acousticness
      type: PropertyValue
      value: 0.578
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.318
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.859
    additional property: Loudness (dB)
      type: PropertyValue
      value: -23.693
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Éxitos de Ayer
type: MusicAlbum
date published: 2012-06-12

Fernando Rosas
type: MusicAlbum
date published: 2012-09-12

El Papalote
type: MusicAlbum
date published: 2014-10-03

Penjamo
type: MusicAlbum
date published: 2015-01-14

El Papalote
type: MusicAlbum
date published: 2019-05-20

El Ruiseñor de Guerrero
type: MusicAlbum
date published: 2022-11-04