Gérard Friedmann
type: MusicGroup
genre: opera
popularity: 6
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x24f8b9756317f5a41ff356353e9e40dd1a36290aa8ad2442159f07394bc342a5
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f8b9756317f5a41ff356353e9e40dd1a36290aa8ad2442159f07394bc342a5. 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/87536c2b-9e3d-4af5-9839-1d566df16459.json and https://artists.proofprofile.net/proofs/artist/87536c2b-9e3d-4af5-9839-1d566df16459.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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track: Les Contes d'Hoffmann / Act 2: Là! dors en paix
  type: MusicRecording
  duration: PT1M42S
  duration ms: 102973
  explicit: false
  by artist: Jacques Offenbach
  by artist: Gérard Friedmann
  by artist: Plácido Domingo
  by artist: Paul Crook
  by artist: Orchestre National De France
  by artist: Seiji Ozawa
  in album: Jacques Offenbach: The Tales of Hoffmann
    type: MusicAlbum
    date published: 1989-01-01
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
  isrc code: DEF058631234
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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    type: PropertyValue
    value: 2026-07-06T07:59:15+00:00
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    type: PropertyValue
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  additional property: OTSHash
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    value: 957046
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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/DEF058631234
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T14:04:01Z
  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 0x8f4564a45704b19c3cdbc93d9001d76fe3b52a277cb8142b9999134c959123a7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEF058631234.
    date published: 2026-07-07T14:04:01Z
  audio: Les Contes d'Hoffmann / Act 2: Là! dors en paix
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 127.667
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.455
    additional property: Energy
      type: PropertyValue
      value: 0.072
    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.918
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.895
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.342
    additional property: Loudness (dB)
      type: PropertyValue
      value: -29.412
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Les Contes d'Hoffmann / Act 2: Hein! Vous?
  type: MusicRecording
  duration: PT2M7S
  duration ms: 127733
  explicit: false
  by artist: Jacques Offenbach
  by artist: Gérard Friedmann
  by artist: Gabriel Bacquier
  by artist: Plácido Domingo
  by artist: Paul Crook
  by artist: Orchestre National De France
  by artist: Seiji Ozawa
  in album: Jacques Offenbach: The Tales of Hoffmann
    type: MusicAlbum
    date published: 1989-01-01
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
  isrc code: DEF058631237
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T20:25:08+00:00
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    value: https://explorer.copyrightchains.com/tx/0x8873ebd49ffa1b4b6bb4775b2db5e8c882f362f7fa1ae5201b796da3c31248b4
  additional property: OTSHash
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
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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 0x8873ebd49ffa1b4b6bb4775b2db5e8c882f362f7fa1ae5201b796da3c31248b4. 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/DEF058631237.
    date published: 2026-07-08T03:20:19Z
  audio: Les Contes d'Hoffmann / Act 2: Hein! Vous?
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.061
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
    additional property: Energy
    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

Danceability
type: PropertyValue
value: 0.405

Energy
type: PropertyValue
value: 0.053

Speechiness
type: PropertyValue
value: 0.102

Acousticness
type: PropertyValue
value: 0.931

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.401

Valence (Positivity)
type: PropertyValue
value: 0.19

Loudness (dB)
type: PropertyValue
value: -28.466

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major