Olga Zado
type: MusicGroup
popularity: 12
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37ed4e45262bcdffcaf715be6b7163a99d89f5c496db30ee8d390bf41debb399
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3603f124-9480-4e5a-8566-9e772acb6164.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ed4e45262bcdffcaf715be6b7163a99d89f5c496db30ee8d390bf41debb399. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3603f124-9480-4e5a-8566-9e772acb6164.json and https://artists.proofprofile.net/proofs/artist/3603f124-9480-4e5a-8566-9e772acb6164.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:03:42Z
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track: Casta Diva in E major in E Major
track: Echo de "Casta diva"
track: Nuit de décembre
  type: MusicRecording
  duration: PT3M1S
  duration ms: 181084
  explicit: false
  by artist: Ruggero Leoncavallo
  by artist: Sonya Yoncheva
  by artist: Olga Zado
  in album: George
    type: MusicAlbum
    date published: 2025-01-24
  genre: italian-opera
  genre: italian-romanticism
  genre: opera
  isrc code: FRZ132425003
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xecf3c956f987e3dd7abab11e31a24b6931ef662f0d59899164e440bc08642200
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957075
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132425003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T18:50:38Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf3c956f987e3dd7abab11e31a24b6931ef662f0d59899164e440bc08642200. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRZ132425003.
    date published: 2026-07-07T18:50:38Z
  audio: Nuit de décembre
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.362
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 6
    additional property: Danceability
      type: PropertyValue
      value: 0.326
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.02
    additional property: Liveness
      type: PropertyValue
      value: 0.071
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.09
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.558
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Chanson espagnole, "Les filles de Cadix"
track: 3 Nocturnes, Op. 9: No. 2 in E-Flat Major, Andante
track: Fantasio, Act I Scene 5: No. 2, Ballade, "Voyez dans la nuit brune" (Fantasio)
track: 6 Morceaux, VWV 3003: No. 1 in A Major, Romance
track: Ninon
  type: MusicRecording
  duration: PT4M30S
  duration ms: 270729
  explicit: false
  by artist: Francesco Paolo Tosti
  by artist: Sonya Yoncheva
  by artist: Olga Zado
  in album: George
    type: MusicAlbum
    date published: 2025-01-24
  genre: opera
  genre: canzone-napoletana
  isrc code: FRZ132425011
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T05:07:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7d4c343004dcdf0d57a7b8fd7935019420b3f8746c8c81137a723c282527aabe
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132425011
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 0x7d4c343004dcdf0d57a7b8fd7935019420b3f8746c8c81137a723c282527aabe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRZ132425011.
    date published: 2026-07-08T03:22:41Z
  audio: Ninon
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.805
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.383
    additional property: Energy
      type: PropertyValue
      value: 0.07
    additional property: Speechiness
      type: PropertyValue
      value: 0.077
    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
track: 3 Liebesträume, S. 541: No. 3 in A-Flat Major, "O lieb so lang du lieben kannst"
track: Les Bohémiennes. Duo d'après les Danses Hongroises de Brahms
track: Echo du Nocturne précédent
track: 6 Mélodies: No. 5, Madrid, VWV 1136
track: 12 Mazourkes de Frédéric Chopin: No. 8, Faible cœur !, VWV 4028
track: 12 Mazourkes de Frédéric Chopin: No. 6, Séparation, VWV 4022
track: Echo to Liebestraum S. 541: No. 3 in A-Flat Major, "O lieb so lang du lieben kannst"

Casta Diva in E major in E Major
type: MusicRecording
duration: PT3M17S
duration ms: 197344
explicit: false
by artist: Frédéric Chopin
by artist: Olga Zado
in album: George
  type: MusicAlbum
  date published: 2025-01-24
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: FRZ132425001
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T07:30:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbeac4cd32ab2ca8f4812289c9460877add341a937258b67fcf9dcd8d5c5e75c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132425001
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeac4cd32ab2ca8f4812289c9460877add341a937258b67fcf9dcd8d5c5e75c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ132425001.
  date published: 2026-07-02T03:55:08Z
audio: Casta Diva in E major in E Major
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.274
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.308
  additional property: Energy
    type: PropertyValue
    value: 0.008
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.924
  additional property: Liveness
    type: PropertyValue
    value: 0.081
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.13
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.291
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Echo de "Casta diva"
type: MusicRecording
duration: PT1M36S
duration ms: 96115
explicit: false
by artist: Frédéric Chopin
by artist: Sonya Yoncheva
by artist: Olga Zado
in album: George
  type: MusicAlbum
  date published: 2025-01-24
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: FRZ132425002
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:30:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x72fc54bfc622dead586efc23a0aa86847311a7f2c0009a5f10a83ff5c6bb29b9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132425002
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957073
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T18:39:05+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fc54bfc622dead586efc23a0aa86847311a7f2c0009a5f10a83ff5c6bb29b9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRZ132425002.
  date published: 2026-07-07T18:39:05Z
audio: Echo de "Casta diva"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.474
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.52
  additional property: Energy
    type: PropertyValue
    value: 0.034
  additional property: Speechiness
    type: PropertyValue
    value: 0.103
  additional property: Acousticness
    type: PropertyValue
    value: 0.957
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.331
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.807
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Chanson espagnole, "Les filles de Cadix"
type: MusicRecording
duration: PT3M36S
duration ms: 216535
explicit: false
by artist: Léo Delibes
by artist: Sonya Yoncheva
by artist: Olga Zado
in album: George
  type: MusicAlbum
  date published: 2025-01-24
genre: classical
isrc code: FRZ132425004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:27:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcfa6f13e72c3a3e14b5a5cc64022f6829d5619309dc947e24c13dd7efc3ba44c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132425004
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956889
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa6f13e72c3a3e14b5a5cc64022f6829d5619309dc947e24c13dd7efc3ba44c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRZ132425004.
  date published: 2026-07-06T07:16:32Z
audio: Chanson espagnole, "Les filles de Cadix"
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.474
  additional property: Energy
    type: PropertyValue
    value: 0.127
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.083
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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3 Nocturnes, Op. 9: No. 2 in E-Flat Major, Andante
type: MusicRecording
duration: PT4M18S
duration ms: 258430
explicit: false
by artist: Frédéric Chopin
by artist: Olga Zado
in album: George
  type: MusicAlbum
  date published: 2025-01-24
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: FRZ132425005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957050
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132425005
additional property: OTSTimestamp
  type: PropertyValue
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
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  date published: 2026-07-07T14:41:13Z
audio: 3 Nocturnes, Op. 9: No. 2 in E-Flat Major, Andante
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Fantasio, Act I Scene 5: No. 2, Ballade, "Voyez dans la nuit brune" (Fantasio)
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explicit: false
by artist: Jacques Offenbach
by artist: Sonya Yoncheva
by artist: Olga Zado
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  date published: 2025-01-24
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:22:41Z
audio: Fantasio, Act I Scene 5: No. 2, Ballade, "Voyez dans la nuit brune" (Fantasio)
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6 Morceaux, VWV 3003: No. 1 in A Major, Romance
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duration: PT3M3S
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by artist: Olga Zado
by artist: Adam Taubitz
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: 6 Morceaux, VWV 3003: No. 1 in A Major, Romance
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3 Liebesträume, S. 541: No. 3 in A-Flat Major, "O lieb so lang du lieben kannst"
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by artist: Olga Zado
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:50:41Z
audio: 3 Liebesträume, S. 541: No. 3 in A-Flat Major, "O lieb so lang du lieben kannst"
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Les Bohémiennes. Duo d'après les Danses Hongroises de Brahms
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by artist: Sonya Yoncheva
by artist: Marina Viotti
by artist: Olga Zado
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Les Bohémiennes. Duo d'après les Danses Hongroises de Brahms
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Echo du Nocturne précédent
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duration: PT2M0S
duration ms: 120999
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by artist: Olga Zado
by artist: Sonya Yoncheva
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genre: classical
genre: early-romantic-era
genre: polish-classical
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  date published: 2026-07-29T23:20:38Z
audio: Echo du Nocturne précédent
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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6 Mélodies: No. 5, Madrid, VWV 1136
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by artist: Olga Zado
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T22:48:59Z
audio: 6 Mélodies: No. 5, Madrid, VWV 1136
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additional property: OTSVerifyInstructions
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12 Mazourkes de Frédéric Chopin: No. 8, Faible cœur !, VWV 4028
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  date published: 2026-07-31T00:26:26Z
audio: 12 Mazourkes de Frédéric Chopin: No. 8, Faible cœur !, VWV 4028
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12 Mazourkes de Frédéric Chopin: No. 6, Séparation, VWV 4022
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
audio: 12 Mazourkes de Frédéric Chopin: No. 6, Séparation, VWV 4022
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Echo to Liebestraum S. 541: No. 3 in A-Flat Major, "O lieb so lang du lieben kannst"
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  date published: 2026-07-30T09:57:33Z
audio: Echo to Liebestraum S. 541: No. 3 in A-Flat Major, "O lieb so lang du lieben kannst"
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Acousticness
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Ninon
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  date published: 2026-07-02T11:38:34Z
audio: Ninon
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Nuit de décembre
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audio: Nuit de décembre
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