Quinteto Argentino de Cuerdas
type: MusicGroup
genre: tango
popularity: 7
followers: 335
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbcf0dcbe9fad5bf89018c5bc065c480d616ebc5ebc7823d4c61aa07235dabd2f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d112714a-d1c2-4b8f-b963-51d594627a89.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d112714a-d1c2-4b8f-b963-51d594627a89.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d112714a-d1c2-4b8f-b963-51d594627a89
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbcf0dcbe9fad5bf89018c5bc065c480d616ebc5ebc7823d4c61aa07235dabd2f","name":"Quinteto Argentino de Cuerdas","registered_at":"2026-06-21T01:07:30Z","symbol":"NIM1772905","token_address":"0x884d6bd5e95d618d4176a5c36ccdaf17e7a456f6","type":"artist","uuid":"d112714a-d1c2-4b8f-b963-51d594627a89"}
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 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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf0dcbe9fad5bf89018c5bc065c480d616ebc5ebc7823d4c61aa07235dabd2f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d112714a-d1c2-4b8f-b963-51d594627a89.json and https://artists.proofprofile.net/proofs/artist/d112714a-d1c2-4b8f-b963-51d594627a89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xbcf0dcbe9fad5bf89018c5bc065c480d616ebc5ebc7823d4c61aa07235dabd2f","name":"Quinteto Argentino de Cuerdas","registered_at":"2026-06-21T01:07:30Z","symbol":"NIM1772905","token_address":"0x884d6bd5e95d618d4176a5c36ccdaf17e7a456f6","type":"artist","uuid":"d112714a-d1c2-4b8f-b963-51d594627a89"}
album: Tangos de Terciopelo
  type: MusicAlbum
  date published: 1999-09-07
track: Uno
  type: MusicRecording
  duration: PT4M9S
  duration ms: 249346
  explicit: false
  by artist: Quinteto Argentino de Cuerdas
  in album: Che, Tango Querido - Instrumentales
    type: MusicAlbum
    date published: 2007-08-01
  isrc code: ARF050500475
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-11T17:17:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x152f4813f0c6a2fa63b442b469290a00a1c65f0c31e08a998307cc9ca7c2b79c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF050500475
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152f4813f0c6a2fa63b442b469290a00a1c65f0c31e08a998307cc9ca7c2b79c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF050500475.
    date published: 2026-06-13T13:32:09Z
  audio: Uno
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.918
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.307
    additional property: Energy
      type: PropertyValue
      value: 0.273
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.753
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.688
    additional property: Liveness
      type: PropertyValue
      value: 0.108
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.228
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.156
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: El Día Que Me Quieras
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193693
  explicit: false
  by artist: Quinteto Argentino de Cuerdas
  in album: Che, Tango Querido - Instrumentales
    type: MusicAlbum
    date published: 2007-08-01
  isrc code: ARF050500485
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T22:40:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x233aacb9f526231ac42fef77a8e72057b80887d25426bad6731905afbc55e09e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF050500485
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233aacb9f526231ac42fef77a8e72057b80887d25426bad6731905afbc55e09e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARF050500485.
    date published: 2026-07-08T03:20:19Z
  audio: El Día Que Me Quieras
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.402
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.23
    additional property: Energy
      type: PropertyValue
      value: 0.325
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.61
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.726
    additional property: Liveness
      type: PropertyValue
      value: 0.397
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.108
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -14.391

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major