Los Boleros Del Ayer
type: MusicGroup
genre: bolero
genre: son cubano
popularity: 22
followers: 1955
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3290f795d729b1bdfc5ea8edec1858c601efa452e0419bd91427ee97d6d708ca. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e87f588-746f-41f9-b28d-53deb1e2d3bb.json and https://artists.proofprofile.net/proofs/artist/3e87f588-746f-41f9-b28d-53deb1e2d3bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: A la Orilla del Amor
  type: MusicAlbum
  date published: 2020-03-27
  track: Cabaretera
    type: MusicRecording
    duration: PT2M41S
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    by artist: Los Boleros Del Ayer
    in album: A la Orilla del Amor
      type: MusicAlbum
      date published: 2020-03-27
    genre: bolero
    genre: son cubano
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    additional property: CopyrightID
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x8c26e7c219a5af70247ad5cbd0e6a750ec342315521249cedde4f67c48cdabeb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDXS2004742.
      date published: 2026-07-03T21:18:05Z
    audio: Cabaretera
      type: AudioObject
      additional property: Tempo (BPM)
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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
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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: 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)
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      additional property: Key Name
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      additional property: Mode Name
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  track: En un Beso la Vida
    type: MusicRecording
    duration: PT2M52S
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    by artist: Los Boleros Del Ayer
    in album: A la Orilla del Amor
      type: MusicAlbum
      date published: 2020-03-27
    genre: bolero
    genre: son cubano
    isrc code: USDXS2004748
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    additional property: CopyrightStatus
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0x55d6f9ff3ce4775475fc4d87874448c0abb6092f457644d62b50249e25f763c1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDXS2004748.
      date published: 2026-07-18T04:13:26Z
    audio: En un Beso la Vida
      type: AudioObject
      additional property: Tempo (BPM)
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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: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.511
      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.17
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
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  track: Rondando de Esquina
album: A La Orilla Del Amor
album: Los Boleros Mas Romanticos
album: Porque Me Haces Llorar
album: En La Orilla Del Mar
album: Alma Negra
album: Pensando En Ti Vol. 12
album: Pierdeme El Respeto
album: Sentimiento Herido
album: Rondando La Esquina
album: Con El Alma En La Mano
album: En Mi Viejo San Juan Vol. 3
album: Mas Romanticos Que Nunca

Valence (Positivity)
type: PropertyValue
value: 0.545

Loudness (dB)
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value: -1.367

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

Rondando de Esquina
type: MusicRecording
duration: PT2M32S
duration ms: 152111
explicit: false
by artist: Los Boleros Del Ayer
in album: A la Orilla del Amor
  type: MusicAlbum
  date published: 2020-03-27
genre: bolero
genre: son cubano
isrc code: USDXS2004758
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T13:43:33+00:00
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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 0x23d4adc52d22a040bd817eaee5b7845a46cde8bb93c2bfb6770409b861ae8cb3. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:07Z), 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/USDXS2004758.
  date published: 2026-07-20T16:46:07Z
audio: Rondando de Esquina
  type: AudioObject
  additional property: Tempo (BPM)
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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: 0.915
  additional property: Energy
    type: PropertyValue
    value: 0.765
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.696
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.209
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.834
  additional property: Loudness (dB)
    type: PropertyValue
    value: -0.184
  additional property: Key Name
    type: PropertyValue
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    type: PropertyValue
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A La Orilla Del Amor
type: MusicAlbum
date published: 2020-03-27

Los Boleros Mas Romanticos
type: MusicAlbum
date published: 2022-08-24
track: Si Las Flores Pudieran Hablar
  type: MusicRecording
  duration: PT4M22S
  duration ms: 262987
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  by artist: Los Boleros Del Ayer
  in album: Los Boleros Mas Romanticos
    type: MusicAlbum
    date published: 2022-08-24
  genre: bolero
  genre: son cubano
  isrc code: CA5KR2277544
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2277544
  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 0x32453e95f3439d18cfb6d598a9efd8fcda740f608a43ecff77ef184b38eb3318. 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/CA5KR2277544.
    date published: 2026-07-05T10:01:46Z
  audio: Si Las Flores Pudieran Hablar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 170.226
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.593
    additional property: Energy
      type: PropertyValue
      value: 0.441
    additional property: Speechiness
      type: PropertyValue
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      type: PropertyValue
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.397
    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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Porque Me Haces Llorar
type: MusicAlbum
date published: 2022-08-30

En La Orilla Del Mar
type: MusicAlbum
date published: 2022-10-13

Alma Negra
type: MusicAlbum
date published: 2023-01-15

Pensando En Ti Vol. 12
type: MusicAlbum
date published: 2023-02-11

Pierdeme El Respeto
type: MusicAlbum
date published: 2023-02-12

Sentimiento Herido
type: MusicAlbum
date published: 2023-04-11

Rondando La Esquina
type: MusicAlbum
date published: 2023-05-11

Con El Alma En La Mano
type: MusicAlbum
date published: 2023-11-08

En Mi Viejo San Juan Vol. 3
type: MusicAlbum
date published: 2024-01-25

Mas Romanticos Que Nunca
type: MusicAlbum
date published: 2024-12-08