Gabriella Martellacci
type: MusicGroup
genre: opera
popularity: 7
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c82c28ea480a162cf772b43a0a707f83d5f42bb25a475e665e73ff719e21881. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f79aef5-3638-424c-9f9f-772b31011c4d.json and https://artists.proofprofile.net/proofs/artist/8f79aef5-3638-424c-9f9f-772b31011c4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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album: Rossi: L'Orfeo
  type: MusicAlbum
  date published: 2021-01-15
album: Monteverdi: L'orfeo
  type: MusicAlbum
  date published: 2012-12-20
album: Monteverdi: Il ritorno d'ulisse in patria
  type: MusicAlbum
  date published: 2006
track: Madrigals, Book I: Ch'ami la mia vita nel tuo bel nome
  type: MusicRecording
  duration: PT2M15S
  duration ms: 135605
  explicit: false
  by artist: Rinaldo Alessandrini
  by artist: Concerto Italiano
  by artist: Monica Piccinini
  by artist: Lucia Napoli
  by artist: Gabriella Martellacci
  by artist: Raffaele Giordani
  by artist: Andrés Montilla
  by artist: Gabriele Lombardi
  by artist: Claudio Monteverdi
  in album: Monteverdi: Tutti I Madrigali
    type: MusicAlbum
    date published: 2023-11-03
  popularity: 3
  genre: classical
  genre: opera
  isrc code: FRZ132304010
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132304010
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0xc40fbef0b308555cbefe2438d6c09babff3f7cd871fbbfcdc9175b96778f9ddd. 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/FRZ132304010.
    date published: 2026-07-08T08:56:20Z
  audio: Madrigals, Book I: Ch'ami la mia vita nel tuo bel nome
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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      value: 0.231
    additional property: Valence (Positivity)
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      value: 0.065
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.859
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor