Ensemble La Cigale
type: MusicGroup
genre: traditional music
popularity: 2
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/acb2e390-c8d6-4987-9e34-3877e89b0982.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/acb2e390-c8d6-4987-9e34-3877e89b0982.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/acb2e390-c8d6-4987-9e34-3877e89b0982
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x74609130fa895e2faedbe70eb1920e4f66f84f91e1b660a3973e8f7defb12b97. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acb2e390-c8d6-4987-9e34-3877e89b0982.json and https://artists.proofprofile.net/proofs/artist/acb2e390-c8d6-4987-9e34-3877e89b0982.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0x74609130fa895e2faedbe70eb1920e4f66f84f91e1b660a3973e8f7defb12b97","name":"Ensemble La Cigale","registered_at":"2026-06-20T10:12:54Z","symbol":"NIM1589692","token_address":"0x5f3517d851b3957ca3a1ae3d2add12d30fb11a45","type":"artist","uuid":"acb2e390-c8d6-4987-9e34-3877e89b0982"}
album: La Grazia Delle Donne
  type: MusicAlbum
  date published: 2021-10-15
  track: Purpurei flores
    type: MusicRecording
    duration: PT5M32S
    duration ms: 332125
    explicit: false
    by artist: Isabella Leonarda
    by artist: Ensemble La Cigale
    by artist: Madeleine Owen
    by artist: Myriam Leblanc
    in album: La Grazia Delle Donne
      type: MusicAlbum
      date published: 2021-10-15
    popularity: 3
    genre: baroque
    genre: italian-baroque
    isrc code: CALC42021151
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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      type: PropertyValue
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      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021151
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:53:27Z
    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 0x2c7be09c6aa4dca86b07e1b61d8253b4434c7c7e5adad2699a2e312efd89d427. 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/CALC42021151.
      date published: 2026-07-08T03:53:27Z
    audio: Purpurei flores
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.541
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.308
      additional property: Energy
        type: PropertyValue
        value: 0.144
      additional property: Speechiness
        type: PropertyValue
        value: 0.066
      additional property: Acousticness
        type: PropertyValue
        value: 0.941
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.203
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.47
      additional property: Loudness (dB)
        type: PropertyValue
        value: -21.459
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Purpurei flores
  type: MusicAlbum
  date published: 2021-09-24
  track: Purpurei flores
    type: MusicRecording
    duration: PT5M32S
    duration ms: 332125
    explicit: false
    by artist: Isabella Leonarda
    by artist: Ensemble La Cigale
    by artist: Madeleine Owen
    by artist: Myriam Leblanc
    in album: Purpurei flores
      type: MusicAlbum
      date published: 2021-09-24
    popularity: 1
    genre: baroque
    genre: italian-baroque
    isrc code: CALC42021151
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    additional property: CopyrightStatus
      type: PropertyValue
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      type: PropertyValue
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
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    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7be09c6aa4dca86b07e1b61d8253b4434c7c7e5adad2699a2e312efd89d427. 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/CALC42021151.
      date published: 2026-07-08T03:20:19Z
    audio: Purpurei flores
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 107.101
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.316
      additional property: Energy
        type: PropertyValue
        value: 0.145
      additional property: Speechiness
      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: Up in the Morning Early

Speechiness
type: PropertyValue
value: 0.059

Acousticness
type: PropertyValue
value: 0.941

Instrumentalness
type: PropertyValue
value: 0.002

Liveness
type: PropertyValue
value: 0.203

Valence (Positivity)
type: PropertyValue
value: 0.482

Loudness (dB)
type: PropertyValue
value: -21.481

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Minor

Up in the Morning Early
type: MusicAlbum
date published: 2017-01-06