Orquesta Escuela de Tango de Emilio Balcarce
type: MusicGroup
popularity: 9
followers: 132
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf848bd5ebd0600a390f92bfe2847f3dee130841c8b8467e021cafe88f13f69b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d99e347b-d5f7-4e82-ade8-c3c47457f8f7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d99e347b-d5f7-4e82-ade8-c3c47457f8f7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d99e347b-d5f7-4e82-ade8-c3c47457f8f7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcf848bd5ebd0600a390f92bfe2847f3dee130841c8b8467e021cafe88f13f69b","name":"Orquesta Escuela de Tango de Emilio Balcarce","registered_at":"2026-06-21T03:59:36Z","symbol":"NIM1812881","token_address":"0xabe0a163da85639f108f6c8d31e5afc43f3941d3","type":"artist","uuid":"d99e347b-d5f7-4e82-ade8-c3c47457f8f7"}
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 0xcf848bd5ebd0600a390f92bfe2847f3dee130841c8b8467e021cafe88f13f69b. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d99e347b-d5f7-4e82-ade8-c3c47457f8f7.json and https://artists.proofprofile.net/proofs/artist/d99e347b-d5f7-4e82-ade8-c3c47457f8f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0xcf848bd5ebd0600a390f92bfe2847f3dee130841c8b8467e021cafe88f13f69b","name":"Orquesta Escuela de Tango de Emilio Balcarce","registered_at":"2026-06-21T03:59:36Z","symbol":"NIM1812881","token_address":"0xabe0a163da85639f108f6c8d31e5afc43f3941d3","type":"artist","uuid":"d99e347b-d5f7-4e82-ade8-c3c47457f8f7"}
track: La Cumparsita
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235013
  explicit: false
  by artist: Orquesta Escuela de Tango de Emilio Balcarce
  in album: Che, Tango Querido - Instrumentales
    type: MusicAlbum
    date published: 2007-08-01
  isrc code: ARF050500277
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-09T20:18:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x251430cf7ddf479503c0626b2698f32c9e2c8a5b82478ebdd2259faf125eeb2c
  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/ARF050500277
  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 0x251430cf7ddf479503c0626b2698f32c9e2c8a5b82478ebdd2259faf125eeb2c. 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/ARF050500277.
    date published: 2026-06-13T13:32:09Z
  audio: La Cumparsita
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.664
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.513
    additional property: Energy
      type: PropertyValue
      value: 0.314
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.728
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.394
    additional property: Liveness
      type: PropertyValue
      value: 0.029
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.6
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.657
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: La Yumba
  type: MusicRecording
  duration: PT3M0S
  duration ms: 180280
  explicit: false
  by artist: Orquesta Escuela de Tango de Emilio Balcarce
  in album: Che, Tango Querido - Instrumentales
    type: MusicAlbum
    date published: 2007-08-01
  isrc code: ARF050500280
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T17:26:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb2d6cce04e22d4c8c7aaf108fe7ea200e91535807e1310c29c10bead46aa33e2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960288
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960288
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF050500280
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T17:41:38Z
  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 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 0xb2d6cce04e22d4c8c7aaf108fe7ea200e91535807e1310c29c10bead46aa33e2. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ARF050500280.
    date published: 2026-07-30T17:41:38Z
  audio: La Yumba
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 126.609
    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: 0.61
    additional property: Energy
      type: PropertyValue
      value: 0.2
    additional property: Speechiness
      type: PropertyValue
      value: 0.056
    additional property: Acousticness
      type: PropertyValue
      value: 0.59
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.719
    additional property: Liveness
      type: PropertyValue
      value: 0.062
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.418
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.05
    additional property: Key Name
    additional property: Mode Name

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor