Cuarteto Cedrón
type: MusicGroup
genre: cuarteto
genre: tango
popularity: 14
followers: 3008
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfe2ee8a7c0b2da98c7f4f78b216b00965e1e8b7acd257abb91fe40eed479c455
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/802eaa2e-aa38-4829-b238-510c23cb1c2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/802eaa2e-aa38-4829-b238-510c23cb1c2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/802eaa2e-aa38-4829-b238-510c23cb1c2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfe2ee8a7c0b2da98c7f4f78b216b00965e1e8b7acd257abb91fe40eed479c455","name":"Cuarteto Cedrón","registered_at":"2026-06-14T17:58:20Z","symbol":"NIM0531704","token_address":"0x5486fee771dfa5a17517023ed685dac5df125e4a","type":"artist","uuid":"802eaa2e-aa38-4829-b238-510c23cb1c2b"}
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2ee8a7c0b2da98c7f4f78b216b00965e1e8b7acd257abb91fe40eed479c455. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/802eaa2e-aa38-4829-b238-510c23cb1c2b.json and https://artists.proofprofile.net/proofs/artist/802eaa2e-aa38-4829-b238-510c23cb1c2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xfe2ee8a7c0b2da98c7f4f78b216b00965e1e8b7acd257abb91fe40eed479c455","name":"Cuarteto Cedrón","registered_at":"2026-06-14T17:58:20Z","symbol":"NIM0531704","token_address":"0x5486fee771dfa5a17517023ed685dac5df125e4a","type":"artist","uuid":"802eaa2e-aa38-4829-b238-510c23cb1c2b"}
album: Todo Raúl González Tuñón
  type: MusicAlbum
  date published: 1994
  track: La Cerveza Del Pescador Schiltigheim
    type: MusicRecording
    duration: PT3M56S
    duration ms: 236843
    explicit: false
    by artist: Cuarteto Cedrón
    in album: Todo Raúl González Tuñón
      type: MusicAlbum
      date published: 1994
    genre: cuarteto
    genre: tango
    isrc code: ARA100600086
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T16:10:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5fd2a2ba8362eab041e0c632553ad5d3a7b72d3a88a0644a781e6fdfff7ade3c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958436
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958436
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA100600086
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T16:42:22Z
    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 0x5fd2a2ba8362eab041e0c632553ad5d3a7b72d3a88a0644a781e6fdfff7ade3c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ARA100600086.
      date published: 2026-07-17T16:42:22Z
    audio: La Cerveza Del Pescador Schiltigheim
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 101.763
      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: 0.383
      additional property: Energy
        type: PropertyValue
        value: 0.309
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.875
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.317
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.368
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Milonga De La Ganzúa
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204080
    explicit: false
    by artist: Cuarteto Cedrón
    in album: Todo Raúl González Tuñón
      type: MusicAlbum
      date published: 1994
    genre: cuarteto
    genre: tango
    isrc code: ARA100600089
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T05:27:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6d37ccf51ff13681a1a299905727a96f2b5600ea4046f7f1028b93427aaa732d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958977
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958977
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA100600089
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T08:28:38Z
    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 0x6d37ccf51ff13681a1a299905727a96f2b5600ea4046f7f1028b93427aaa732d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:28:38Z), 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/ARA100600089.
      date published: 2026-07-21T08:28:38Z
    audio: Milonga De La Ganzúa
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.941
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.54
      additional property: Energy
        type: PropertyValue
        value: 0.425
      additional property: Speechiness
        type: PropertyValue
        value: 0.063
      additional property: Acousticness
        type: PropertyValue
        value: 0.932
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Corazon de piel afuera
album: Arrabal Salvaje
album: Chansons d'un pays quelconque
album: Le chant du coq - Cantate
album: Chansons traditionnelles d'Argentine
album: Alborada del Tango
album: En Vivo (En el Olympia de París)
album: Del Gallo Cantor - Suertes
album: Fábulas / Canciones de Amor de Occitania y Otros Casos
album: Madrugada
album: Canciones Tradicionales de Argentina
album: Para Que Vos y Yo
album: Mojarrita Porá
album: Piove en San Telmo
album: Aparición Urbana
album: Para Nuestros Hijos

Cambios
type: MusicRecording
duration: PT9M3S
duration ms: 543693
explicit: false
by artist: Cuarteto Cedrón
in album: Del Gallo Cantor - Suertes
  type: MusicAlbum
  date published: 2015-09-29
genre: cuarteto
genre: tango
isrc code: ARF391501672
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T22:30:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa17a58b9c1f37076ddf63a2ce647bd442a7a1b552c41b3952104c1c489adf14b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF391501672
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41+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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957120
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a58b9c1f37076ddf63a2ce647bd442a7a1b552c41b3952104c1c489adf14b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF391501672.
  date published: 2026-07-08T08:56:20Z
audio: Cambios
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.15
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.303
  additional property: Energy
    type: PropertyValue
    value: 0.423
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.667
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.219
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.251
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Ruidos
type: MusicRecording
duration: PT3M33S
duration ms: 213854
explicit: false
by artist: Cuarteto Cedrón
in album: Del Gallo Cantor - Suertes
  type: MusicAlbum
  date published: 2015-09-29
genre: cuarteto
genre: tango
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7869ffa73a86da08e5a5e977533f3f0bf95319369ace759500c8e7e83118d4ec. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARF391501671.
  date published: 2026-07-29T19:35:34Z
audio: Ruidos
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.039
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.28
  additional property: Energy
    type: PropertyValue
    value: 0.351
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.6
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.288
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.626
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: ARF391501671
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960138
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF391501671
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34+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 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

Glorias
type: MusicRecording
duration: PT6M28S
duration ms: 388120
explicit: false
by artist: Cuarteto Cedrón
in album: Del Gallo Cantor - Suertes
  type: MusicAlbum
  date published: 2015-09-29
genre: cuarteto
genre: tango
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd823c731f5e8e5da19db221a1eddd91471053dbf3dfa71490c434bc4a3af6ff2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ARF391501673.
  date published: 2026-07-31T18:48:12Z
audio: Glorias
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.708
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.382
  additional property: Energy
    type: PropertyValue
    value: 0.434
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.72
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.163
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.339
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.595
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: ARF391501673
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960448
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T18:48:12+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF391501673
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960448
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960448
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T18:48:12+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 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

Cartas
type: MusicRecording
duration: PT2M49S
duration ms: 169782
explicit: false
by artist: Cuarteto Cedrón
in album: Del Gallo Cantor - Suertes
  type: MusicAlbum
  date published: 2015-09-29
genre: cuarteto
genre: tango
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681916cc31af43e5e48cfdae7a1ed3ffc769bcd1ec986853c7933ee70775b36e. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ARF391501674.
  date published: 2026-07-31T09:09:19Z
audio: Cartas
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.79
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.391
  additional property: Energy
    type: PropertyValue
    value: 0.553
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.547
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.144
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.595
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.022
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: ARF391501674
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960376
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T09:09:19+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF391501674
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960376
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960376
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:09:19+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 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

Sobre la Poesía y el Combate
type: MusicRecording
duration: PT2M48S
duration ms: 168436
explicit: false
by artist: Cuarteto Cedrón
in album: Del Gallo Cantor - Suertes
  type: MusicAlbum
  date published: 2015-09-29
genre: cuarteto
genre: tango
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed518000b17ff2798086a4dd095c292209b0d83148a4717cc466898627d27e6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ARF391501676.
  date published: 2026-07-31T23:30:38Z
audio: Sobre la Poesía y el Combate
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.405
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.53
  additional property: Energy
    type: PropertyValue
    value: 0.5
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.741
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.506
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.57
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.168
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: ARF391501676
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960478
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T23:30:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF391501676
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960478
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38+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 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

Valence (Positivity)
type: PropertyValue
value: 0.5

Loudness (dB)
type: PropertyValue
value: -7.948

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

Corazon de piel afuera
type: MusicAlbum
date published: 2010

Arrabal Salvaje
type: MusicAlbum
date published: 2012-10-23

Chansons d'un pays quelconque
type: MusicAlbum
date published: 2012-10-23

Le chant du coq - Cantate
type: MusicAlbum
date published: 2012-10-23

Chansons traditionnelles d'Argentine
type: MusicAlbum
date published: 2012-10-23

Alborada del Tango
type: MusicAlbum
date published: 2012-10-23

En Vivo (En el Olympia de París)
type: MusicAlbum
date published: 2013-06-04

Del Gallo Cantor - Suertes
type: MusicAlbum
date published: 2015-09-29
track: Cambios
track: Ruidos
track: Glorias
track: Cartas
track: Sobre la Poesía y el Combate

Fábulas / Canciones de Amor de Occitania y Otros Casos
type: MusicAlbum
date published: 2015-11-16

Madrugada
type: MusicAlbum
date published: 2016-06-17

Canciones Tradicionales de Argentina
type: MusicAlbum
date published: 2016-06-17

Para Que Vos y Yo
type: MusicAlbum
date published: 2016-08-19

Mojarrita Porá
type: MusicAlbum
date published: 2016-11-18

Piove en San Telmo
type: MusicAlbum
date published: 2017-05-19

Aparición Urbana
type: MusicAlbum
date published: 2017-05-19

Para Nuestros Hijos
type: MusicAlbum
date published: 2017-05-30