Bedřich Smetana
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  track: Ligeti: Mátraszentimrei dalok: No. 4, Erdőbe, erdőbe
  track: Chabrier: Suite pastorale: III. Sous-bois
  track: Fauré: 3 Mélodies, Op. 85: No. 1, Dans la forêt de septembre
  track: Strauss II, J: Geschichten aus dem Wienerwald, Op. 325
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  track: Smetana: Má Vlast: IV. From Bohemian Woods and Fields
album: Mirages. Hidden Treasures of Classical Piano
album: Klassische Musik für den Sommer - Über das Meer
album: Music by the Sea
album: Die Moldau - Klassik die man gehört haben muss
album: Smetana: String Quartet No. 1 / From My Life - Loudová: String Quartet No. 2 (In One Movement)
album: Women of Piano: Great Female Pianists of the Golden Age
album: Smetana: Wiener Philharmoniker
album: Slavic Rhapsody
album: Berliner Philharmoniker: Sibelius & Smetana
album: Dvořák: Symphony No. 7; Slavonic Dances; Smetana: Vltava
album: Smetana: Má vlast, JB 1.112 (Live)
album: Trifonov Plays Chamber Music (Live)
album: Smetana: Polkas
album: Smetana: Orchestral Works
album: Smetana: Swedish Symphonic Poems
album: Bedřich Smetana: Libuše
album: Smetana: String Quartets Nos. 1 & 2
album: Smetanovo kvarteto hraje Smetanu
album: Smetana: Triumphal Symphony & Overture and Dances from The Bartered Bride
album: Smetana: Má Vlast
album: Smetana: Má vlast (My Country), JB 1:112
album: Smetana: Mein Vaterland
album: Smetana: Prodana nevesta (Sung in German) [Live]
album: Smetana: Má vlast, JB 1:112
album: Lovro von Matacic
album: Smetana: Dalibor
album: Janáček: String Quartets Nos. 1 & 2 – Smetana: String Quartet No. 1 "From My Life"
album: Smetana: Werke für Klavier, Vol. 2
album: Smetana: String Quartets No. 1 & No. 2
album: Smetana: Piano Works, Vol. 7
album: Smetana, Complete Works, Vol. 2: Piano Compositions
album: Smetana: Bartered Bride (The Beecham Collection)
album: Smetana: Piano Works, Vol. 6
album: Smetana: Die verkaufte Braut
album: Bedrich Smetana, Vol. 2 (1933)
album: Bedrich Smetana, Vol. 1 (1941)
album: Bedřich Smetana: The Bartered Bride
album: Smetana: String Quartets
album: SMETANA: Polkas, Bagatelles & Impromptus
album: Horizons. Piano Music from the Golden Age
album: Rafael Kubelík - The Mercury Masters (Vol. 7 - Smetana: Má Vlast)
album: Smetana: Piano Works, Vol. 3
album: Smetana: Ma Vlast (My Country)
album: Smetana: Má vlast (Digitally Remastered)
album: Smetana: The Moldau & Other Masterpieces
album: Smetana, Martinů & Eben: Piano Trios
album: Smetana: The Two Widows, JB 1:108
album: Smetana: Scenes from the Operas
album: Smetana: The Bartered Bride
album: Smetana: The Bartered Bride. Highlights from the Opera
album: Smetana: The Bartered Bride (Sung in German)
album: Smetana: Libuše
album: Smetana: Zwei Witwen
album: Concert Favourites
album: Smetana: The Brandenburgers in Bohemia
album: Scény z českých oper. Bedřich Smetana
album: Smetana: Libuše, JB 1:102 (Live)
album: Smetana: Libuše. Festive Opera in 3 Acts
album: Smetana: The Kiss, JB 1:104
album: Scenes from Childhood
track: DEP621800001

Serenade for Strings in E Major, B.52: I. Moderato
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Suite for String Orchestra, JW6 No. 2: III. Andante con Moto
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Má Vlast, JB1:112: 1. Vysehrad
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  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: 953528
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T15:41:10+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 0x847cf3414e4c43a86e4999b957449ff7c378102347372081517c58c9a7c17671. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF071700661.
  date published: 2026-06-13T15:41:10Z
audio: Má Vlast, JB1:112: 1. Vysehrad
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.897
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.144
  additional property: Energy
    type: PropertyValue
    value: 0.069
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.894
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.829
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.06
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.19
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Má Vlast, JB1:112: 2. Vltava
type: MusicRecording
duration: PT12M6S
duration ms: 726892
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Jiří Bělohlávek
in album: Smetana: Má Vlast
  type: MusicAlbum
  date published: 2018-01-05
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: GBF071700662
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T09:03:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x139475cde31dca0894d5c789a3bbd3f5dabb4510b79312bf8b3f14383288bf42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071700662
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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: 953513
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:47:07+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 0x139475cde31dca0894d5c789a3bbd3f5dabb4510b79312bf8b3f14383288bf42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF071700662.
  date published: 2026-06-13T12:47:07Z
audio: Má Vlast, JB1:112: 2. Vltava
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.883
  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: 0.122
  additional property: Energy
    type: PropertyValue
    value: 0.118
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.817
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.85
  additional property: Liveness
    type: PropertyValue
    value: 0.073
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.557
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Má Vlast, JB1:112: 3. Sarka
type: MusicRecording
duration: PT10M11S
duration ms: 611280
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Jiří Bělohlávek
in album: Smetana: Má Vlast
  type: MusicAlbum
  date published: 2018-01-05
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: GBF071700663
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:08:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d800e37fdfe9c88dc1f099366ee34e458496e4b80fe2d42c4ffd781a790842f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071700663
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
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: 953528
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T15:41:10+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 0x0d800e37fdfe9c88dc1f099366ee34e458496e4b80fe2d42c4ffd781a790842f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF071700663.
  date published: 2026-06-13T17:25:41Z
audio: Má Vlast, JB1:112: 3. Sarka
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.704
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.255
  additional property: Energy
    type: PropertyValue
    value: 0.145
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.824
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.717
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.1
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.388
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Má Vlast, JB1:112: 4. Z ceskych luhu a haju
type: MusicRecording
duration: PT12M39S
duration ms: 759239
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Jiří Bělohlávek
in album: Smetana: Má Vlast
  type: MusicAlbum
  date published: 2018-01-05
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: GBF071700664
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T08:48:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d27c452944216a967d2a85423bc0350f9b50386280900b765d7eec39b2eac67
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071700664
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+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 0x0d27c452944216a967d2a85423bc0350f9b50386280900b765d7eec39b2eac67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF071700664.
  date published: 2026-06-13T15:41:10Z
audio: Má Vlast, JB1:112: 4. Z ceskych luhu a haju
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.843
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.209
  additional property: Energy
    type: PropertyValue
    value: 0.103
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.788
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.719
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.126
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.224
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Má Vlast, JB1:112: 5. Tábor
type: MusicRecording
duration: PT12M33S
duration ms: 753879
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Jiří Bělohlávek
in album: Smetana: Má Vlast
  type: MusicAlbum
  date published: 2018-01-05
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: GBF071700665
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:00:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e09c8b3c00557105c6b59d0f2aeefd59016e2ad2ebe7e3a427e249c2f8352e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071700665
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
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: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+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 0x9e09c8b3c00557105c6b59d0f2aeefd59016e2ad2ebe7e3a427e249c2f8352e1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF071700665.
  date published: 2026-06-13T17:25:41Z
audio: Má Vlast, JB1:112: 5. Tábor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.46
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.279
  additional property: Energy
    type: PropertyValue
    value: 0.076
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.916
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.801
  additional property: Liveness
    type: PropertyValue
    value: 0.147
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.059
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.788
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Má Vlast, JB1:112: 6. Blanik
type: MusicRecording
duration: PT14M8S
duration ms: 848410
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Jiří Bělohlávek
in album: Smetana: Má Vlast
  type: MusicAlbum
  date published: 2018-01-05
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: GBF071700666
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T12:31:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x95d9eae757cbe61c56172333278014bd9c0167475ed844638746f9fafaf986b4
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/GBF071700666
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
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: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+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 0x95d9eae757cbe61c56172333278014bd9c0167475ed844638746f9fafaf986b4. 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/GBF071700666.
  date published: 2026-06-13T13:32:09Z
audio: Má Vlast, JB1:112: 6. Blanik
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.956
  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: 0.226
  additional property: Energy
    type: PropertyValue
    value: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.85
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.833
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.083
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.3
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

String Quartet No. 1 in E Minor, JB 1:105: I. Allegro vivo appassionato
type: MusicRecording
duration: PT7M43S
duration ms: 463546
explicit: false
by artist: Bedřich Smetana
by artist: Pavel Haas Quartet
in album: Smetana: String Quartets No. 1 & No. 2
  type: MusicAlbum
  date published: 2015-04-17
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: CZA161500564
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T18:52:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7fa81e4e22db85653875e60ba2efcb603f0d0ef3e07fcfa22591dbb90faba9f5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161500564
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
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: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+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 0x7fa81e4e22db85653875e60ba2efcb603f0d0ef3e07fcfa22591dbb90faba9f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CZA161500564.
  date published: 2026-07-02T03:30:09Z
audio: String Quartet No. 1 in E Minor, JB 1:105: I. Allegro vivo appassionato
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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
    type: PropertyValue
    value: 0.155
  additional property: Energy
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    value: 0.079
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.94
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.082
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.197
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
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String Quartet No. 1 in E Minor, JB 1:105: II. Allegro moderato a la polka
type: MusicRecording
duration: PT5M43S
duration ms: 343413
explicit: false
by artist: Bedřich Smetana
by artist: Pavel Haas Quartet
in album: Smetana: String Quartets No. 1 & No. 2
  type: MusicAlbum
  date published: 2015-04-17
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: CZA161500565
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T19:57:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc723f045c70c942df3b2eceefc0aa62d1f1ba8c0a3175ea4c9cd5702134b733
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161500565
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0xdc723f045c70c942df3b2eceefc0aa62d1f1ba8c0a3175ea4c9cd5702134b733. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CZA161500565.
  date published: 2026-07-02T05:09:12Z
audio: String Quartet No. 1 in E Minor, JB 1:105: II. Allegro moderato a la polka
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.349
  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: 0.448
  additional property: Energy
    type: PropertyValue
    value: 0.138
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.915
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.719
  additional property: Liveness
    type: PropertyValue
    value: 0.358
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.268
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.899
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

String Quartet No. 1 in E Minor, JB 1:105: III. Largo sostenuto
type: MusicRecording
duration: PT9M5S
duration ms: 545280
explicit: false
by artist: Bedřich Smetana
by artist: Pavel Haas Quartet
in album: Smetana: String Quartets No. 1 & No. 2
  type: MusicAlbum
  date published: 2015-04-17
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: CZA161500566
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T17:54:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7592907d2fe96d7413e0784a8589d788344f9f2041577a9d0897442092d92e59
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161500566
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0x7592907d2fe96d7413e0784a8589d788344f9f2041577a9d0897442092d92e59. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CZA161500566.
  date published: 2026-07-02T05:09:12Z
audio: String Quartet No. 1 in E Minor, JB 1:105: III. Largo sostenuto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 165.221
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.117
  additional property: Energy
    type: PropertyValue
    value: 0.029
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.928
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.8
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.849
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

String Quartet No. 1 in E Minor, JB 1:105: IV. Vivace
type: MusicRecording
duration: PT6M10S
duration ms: 370120
explicit: false
by artist: Bedřich Smetana
by artist: Pavel Haas Quartet
in album: Smetana: String Quartets No. 1 & No. 2
  type: MusicAlbum
  date published: 2015-04-17
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: CZA161500567
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T16:09:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf002a52c41f724f3950ff153788c9023e74d7ed24926ffb411567f40beb30592
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/CZA161500567
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 0xf002a52c41f724f3950ff153788c9023e74d7ed24926ffb411567f40beb30592. 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/CZA161500567.
  date published: 2026-07-02T03:55:08Z
audio: String Quartet No. 1 in E Minor, JB 1:105: IV. Vivace
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.042
  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: 0.381
  additional property: Energy
    type: PropertyValue
    value: 0.321
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.913
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.86
  additional property: Liveness
    type: PropertyValue
    value: 0.294
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.122
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.151
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Album Leaf for Kateřina Kolářová in B Major, JB 1:20
type: MusicRecording
duration: PT1M57S
duration ms: 117626
explicit: false
by artist: Bedřich Smetana
by artist: Jitka Čechová
in album: Smetana: Piano Works, Vol. 6
  type: MusicAlbum
  date published: 2013-05-17
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: CZA161300602
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T08:50:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x840ffc706328d69d36c50639b9dc16f925f9b4861c155513bd87194edec77ade
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161300602
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
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: 953513
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:47:07+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 0x840ffc706328d69d36c50639b9dc16f925f9b4861c155513bd87194edec77ade. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CZA161300602.
  date published: 2026-06-13T17:25:41Z
audio: Album Leaf for Kateřina Kolářová in B Major, JB 1:20
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 69.867
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.291
  additional property: Energy
    type: PropertyValue
    value: 0.029
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.894
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.073
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.769
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Album Leaf for Vazlaw Ulwer in E-Flat Minor, JB 1:23
type: MusicRecording
duration: PT1M24S
duration ms: 84466
explicit: false
by artist: Bedřich Smetana
by artist: Jitka Čechová
in album: Smetana: Piano Works, Vol. 6
  type: MusicAlbum
  date published: 2013-05-17
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: CZA161300606
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:35:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cbe615d1a15a80139116bd79f29dad8b66fa9778accd2094065fab5e48bb98c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161300606
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0x6cbe615d1a15a80139116bd79f29dad8b66fa9778accd2094065fab5e48bb98c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CZA161300606.
  date published: 2026-07-02T05:09:12Z
audio: Album Leaf for Vazlaw Ulwer in E-Flat Minor, JB 1:23
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 92.384
  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: 0.514
  additional property: Energy
    type: PropertyValue
    value: 0.014
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.885
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.358
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.709
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

The Bartered Bride: Overture
type: MusicRecording
duration: PT6M35S
duration ms: 395059
explicit: false
by artist: Bedřich Smetana
by artist: BBC Symphony Orchestra
by artist: Jiří Bělohlávek
in album: Bedřich Smetana: The Bartered Bride
  type: MusicAlbum
  date published: 2012-09-11
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: FRZ141109010
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T09:00:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb310923968b166dcc142687aa2b2e1cf8bc576a7f0cde680e6df376766708eae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ141109010
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
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: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+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 0xb310923968b166dcc142687aa2b2e1cf8bc576a7f0cde680e6df376766708eae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ141109010.
  date published: 2026-06-13T17:25:41Z
audio: The Bartered Bride: Overture
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 148.484
  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: 0.333
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  additional property: Liveness
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  additional property: Valence (Positivity)
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The Bartered Bride: ACT I, Scene 1. Sbor Proč bychom se netěšili
type: MusicRecording
duration: PT8M2S
duration ms: 482626
explicit: false
by artist: Bedřich Smetana
by artist: BBC Singers
by artist: Jiří Bělohlávek
by artist: BBC Symphony Orchestra
in album: Bedřich Smetana: The Bartered Bride
  type: MusicAlbum
  date published: 2012-09-11
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: FRZ141109020
additional property: CopyrightID
additional property: CopyrightStatus
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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
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5249b72bd4c3a00db21a0d9836ffd9caeecbb980901330f8362119f11fadc36. 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/FRZ141109020.
  date published: 2026-07-02T03:55:08Z
audio: The Bartered Bride: ACT I, Scene 1. Sbor Proč bychom se netěšili
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Má vlast (My Country): No. 2, Vltava [Moldau]
type: MusicRecording
duration: PT13M14S
duration ms: 794000
explicit: false
by artist: Bedřich Smetana
by artist: Polish National Radio Symphony Orchestra
by artist: Antoni Wit
in album: Smetana: Ma Vlast (My Country)
  type: MusicAlbum
  date published: 1994-08-05
popularity: 37
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: HKI199310102
additional property: CopyrightID
additional property: CopyrightStatus
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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
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199310102
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
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19303784e0302105badf4efced34e1449231af1e56a2662c1aee1d600420224. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199310102.
  date published: 2026-06-13T12:47:07Z
audio: Má vlast (My Country): No. 2, Vltava [Moldau]
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Má Vlast, JB1:112: Má Vlast, JB1:112: I. Vyšehrad
type: MusicRecording
duration: PT15M59S
duration ms: 959986
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Semyon Bychkov
in album: Smetana: Má Vlast
  type: MusicAlbum
  date published: 2024-03-01
popularity: 10
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: NLE422320301
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422320301
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
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Má Vlast, JB1:112: Má Vlast, JB1:112: I. Vyšehrad
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  additional property: Valence (Positivity)
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Má Vlast, JB1:112: Má Vlast, JB1:112: II. Vltava
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duration: PT13M9S
duration ms: 789813
explicit: false
by artist: Bedřich Smetana
by artist: Czech Philharmonic
by artist: Semyon Bychkov
in album: Smetana: Má Vlast
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  date published: 2024-03-01
popularity: 11
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: NLE422320302
additional property: CopyrightID
additional property: CopyrightStatus
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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
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422320302
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
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe013ed0e0ab0d572dea70c6fab114342034dabcac403f85161e6c4a853a21016. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLE422320302.
  date published: 2026-07-02T11:38:34Z
audio: Má Vlast, JB1:112: Má Vlast, JB1:112: II. Vltava
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Speechiness
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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Ligeti: Mátraszentimrei dalok: No. 4, Erdőbe, erdőbe
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duration: PT1M7S
duration ms: 67240
explicit: false
by artist: György Ligeti
by artist: Groupe Vocal De France
by artist: Guy Reibel
in album: Forest Murmurs
  type: MusicAlbum
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popularity: 2
isrc code: FRZ119000580
additional property: CopyrightID
additional property: CopyrightStatus
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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
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147338ad06635dcfc05e73ce8e118d1ff6a670704decd1ba54147a65f116e326. 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/FRZ119000580.
  date published: 2026-07-08T03:22:41Z
audio: Ligeti: Mátraszentimrei dalok: No. 4, Erdőbe, erdőbe
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  additional property: Acousticness
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  additional property: Instrumentalness
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Chabrier: Suite pastorale: III. Sous-bois
type: MusicRecording
duration: PT4M34S
duration ms: 274173
explicit: false
by artist: Emmanuel Chabrier
by artist: Michel Plasson
by artist: Orchestre Du Capitole De Toulouse
in album: Forest Murmurs
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popularity: 2
isrc code: FRZ118702985
additional property: CopyrightID
additional property: CopyrightStatus
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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
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c282b6e8258d268f7593d2fb18743f64a4b731f50e56193bc7dc41dfb001d1. 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/FRZ118702985.
  date published: 2026-07-08T03:20:19Z
audio: Chabrier: Suite pastorale: III. Sous-bois
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  additional property: Acousticness
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Fauré: 3 Mélodies, Op. 85: No. 1, Dans la forêt de septembre
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by artist: Frederica von Stade
by artist: Jean-Philippe Collard
in album: Forest Murmurs
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popularity: 2
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Strauss II, J: Geschichten aus dem Wienerwald, Op. 325
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Wagner: Siegfried, Act 2: Forest Murmurs
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Rossini: Guillaume Tell, Act 2: "Sombre forêt" (Mathilde)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Rossini: Guillaume Tell, Act 2: "Sombre forêt" (Mathilde)
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Debussy: Pelléas et Mélisande, CD 93, L. 88, Act 1: Introduction
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Debussy: Pelléas et Mélisande, CD 93, L. 88, Act 1: Introduction
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Gluck: Orphée et Eurydice, Wq. 41, Act 1: Chœur. "Ah ! Dans ce bois tranquille et sombre" (Nymphes, Bergers, Orphée)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Villa-Lobos: Floresta do Amazonas, W551: Melodia Sentimental (Arr. Barbosa-Lima for Guitar)
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  date published: 2026-07-08T08:56:20Z
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Smetana: Má Vlast: IV. From Bohemian Woods and Fields
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Debussy: La Mer, CD 111, L. 109: II. Jeux de vagues
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Bridge: The Sea: I. Seascape. Allegro ben moderato
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Ives: Set No. 3 for Chamber Orchestra: I. At Sea. Adagio sostenuto
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Sibelius: Pelléas et Mélisande, Op. 46: III. At the Seashore
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Mendelssohn: The Hebrides, Op. 26, MWV P7 "Fingal's Cave"
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Coates: By the Sleepy Lagoon (Instrumental Version)
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Ravel: Miroirs, M. 43: III. Une barque sur l'océan
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-07-08T03:39:04Z
audio: Ravel: Miroirs, M. 43: III. Une barque sur l'océan
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T16:51:38Z
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Smetana: String Quartet No. 1 / From My Life - Loudová: String Quartet No. 2 (In One Movement)
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Women of Piano: Great Female Pianists of the Golden Age
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Smetana: Wiener Philharmoniker
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  additional property: OTSVerifyInstructions
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    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
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    date published: 2026-07-08T03:22:41Z
  audio: The Bartered Bride, JB 1:100: Overture - Live
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track: The Bartered Bride, JB 1:100 / Act II: Furiant - Live At Grosser Saal, Musikverein, Wien / 1986
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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track: Má Vlast, JB1:112: 2. Vltava - Live

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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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

OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

Má Vlast, JB1:112: 1. Vysehrad - Live
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Má Vlast, JB1:112: 2. Vltava - Live
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by artist: Wiener Philharmoniker
by artist: James Levine
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Má Vlast, JB1:112: 2. Vltava - Live
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    date published: 2026-07-08T03:53:27Z
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Dvořák: Symphony No. 7; Slavonic Dances; Smetana: Vltava
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Smetana: Orchestral Works
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Smetana: Swedish Symphonic Poems
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Bedřich Smetana: Libuše
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Smetana: String Quartets Nos. 1 & 2
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Smetanovo kvarteto hraje Smetanu
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Smetana: Triumphal Symphony & Overture and Dances from The Bartered Bride
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Smetana: Prodana nevesta (Sung in German) [Live]
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Smetana: Má vlast, JB 1:112
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Lovro von Matacic
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Smetana: Dalibor
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Janáček: String Quartets Nos. 1 & 2 – Smetana: String Quartet No. 1 "From My Life"
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Smetana: Werke für Klavier, Vol. 2
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Smetana: String Quartets No. 1 & No. 2
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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: 2026-07-08T03:20:19Z
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Smetana: Piano Works, Vol. 7
type: MusicAlbum
date published: 2014-11-14

Smetana, Complete Works, Vol. 2: Piano Compositions
type: MusicAlbum
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Smetana: Bartered Bride (The Beecham Collection)
type: MusicAlbum
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Smetana: Piano Works, Vol. 6
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: Album Leaf for Kateřina Kolářová in B Major, JB 1:20
track: Album Leaf for Elisabeth Felicitas Thun in A-Flat Major, JB 1:25
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  subject of: OpenTimestamps Proof of Existence
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track: Album Leaf for Vazlaw Ulwer in E-Flat Minor, JB 1:23
track: Album Leaf for Marie Prokschové in C Major, JB 1:81
track: Charakterstück in C-Flat Major, JB 1:34

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Album Leaf for Elisabeth Felicitas Thun in A-Flat Major, JB 1:25
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Album Leaf for Marie Prokschové in C Major, JB 1:81
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by artist: Jitka Čechová
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Album Leaf for Marie Prokschové in C Major, JB 1:81
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Charakterstück in C-Flat Major, JB 1:34
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Smetana: Die verkaufte Braut
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date published: 2013-04-05

Bedrich Smetana, Vol. 2 (1933)
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Bedrich Smetana, Vol. 1 (1941)
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Bedřich Smetana: The Bartered Bride
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: The Bartered Bride: Overture
track: The Bartered Bride: ACT II, Kecal Nuže, milý chasníku
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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track: The Bartered Bride: ACT I, Scene 1. Sbor Proč bychom se netěšili
track: The Bartered Bride: ACT II, Scene 5. Jeník Až uzříš, komus
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  subject of: OpenTimestamps Proof of Existence
  audio: The Bartered Bride: ACT II, Scene 5. Jeník Až uzříš, komus
track: The Bartered Bride: ACT I, Mařenka Kdybych se co takového
track: The Bartered Bride: ACT I, Mařenka Konečně je celá
track: The Bartered Bride: ACT I, Scene 3. Kecal Jak vám pravím
track: The Bartered Bride: ACT III, Principál Ohlašujeme slavnému publikum
track: The Bartered Bride: ACT I, Kecal Mladík slušný a mravů víc tichých
track: The Bartered Bride: ACT III, Principál, Esmeralda Milostné zvířátko
track: The Bartered Bride: ACT II, Scene 1. Sbor To pivečko to věru je nebeský dar
track: The Bartered Bride: ACT III, Scene 4. Mařenka Ne, tomu nevěřím
track: The Bartered Bride: ACT III, Scene 5. Vašek Co... co pořáde chcete?
track: The Bartered Bride: ACT III, Všichni Rozmysli si, Mařenko, rozmysli
track: The Bartered Bride: ACT III, Scene 7. Jeník Mařenko má, Mařenko má
track: The Bartered Bride: ACT III, Jeník Utiš se, dívko, utiš se
track: The Bartered Bride: ACT III, Vašek Ne... ne... nebojte se!
track: The Bartered Bride: ACT III, Sbor Dobrá věc se podařila

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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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

OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

The Bartered Bride: ACT II, Scene 5. Jeník Až uzříš, komus
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The Bartered Bride: ACT I, Mařenka Kdybych se co takového
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explicit: false
by artist: Bedřich Smetana
by artist: Dana Buresova
by artist: Jiří Bělohlávek
by artist: BBC Symphony Orchestra
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genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e9d0dd318c674da810d37bf56c779a436fc873b9d15c007e1d3d9139eb0ade. 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/FRZ141109040.
  date published: 2026-07-08T03:53:27Z
audio: The Bartered Bride: ACT I, Mařenka Kdybych se co takového
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The Bartered Bride: ACT I, Mařenka Konečně je celá
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by artist: BBC Symphony Orchestra
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genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride: ACT I, Mařenka Konečně je celá
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The Bartered Bride: ACT I, Scene 3. Kecal Jak vám pravím
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by artist: Jozef Benci
by artist: Jiří Bělohlávek
by artist: BBC Symphony Orchestra
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride: ACT I, Scene 3. Kecal Jak vám pravím
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The Bartered Bride: ACT III, Principál Ohlašujeme slavnému publikum
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by artist: BBC Symphony Orchestra
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genre: classical
genre: late-romantic-era
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: The Bartered Bride: ACT III, Principál Ohlašujeme slavnému publikum
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The Bartered Bride: ACT I, Kecal Mladík slušný a mravů víc tichých
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duration: PT3M41S
duration ms: 221720
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by artist: Jozef Benci
by artist: Jiří Bělohlávek
by artist: BBC Symphony Orchestra
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  date published: 2012-09-11
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc2b54e098df0e3339f823d7f8879d7dc656cbb8ddf220da0b09e0763a731eb. 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/FRZ141109090.
  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride: ACT I, Kecal Mladík slušný a mravů víc tichých
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The Bartered Bride: ACT III, Principál, Esmeralda Milostné zvířátko
type: MusicRecording
duration: PT1M44S
duration ms: 104240
explicit: false
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by artist: Jaroslav Březina
by artist: BBC Symphony Orchestra
by artist: Jiří Bělohlávek
by artist: Kateřina Kněžíková
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genre: classical
genre: late-romantic-era
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genre: early-modern-classical
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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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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c66fe3626f58ae5021452fc4c14bd1326df8d9d18939e370509ef0d59115c68. 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/FRZ141110110.
  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride: ACT III, Principál, Esmeralda Milostné zvířátko
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The Bartered Bride: ACT II, Scene 1. Sbor To pivečko to věru je nebeský dar
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duration: PT5M8S
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by artist: BBC Singers
by artist: BBC Symphony Orchestra
by artist: Jiří Bělohlávek
in album: Bedřich Smetana: The Bartered Bride
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  date published: 2012-09-11
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
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additional property: OTSVerificationAPI
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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: The Bartered Bride: ACT II, Scene 1. Sbor To pivečko to věru je nebeský dar
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The Bartered Bride: ACT III, Scene 4. Mařenka Ne, tomu nevěřím
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by artist: Dana Buresova
by artist: Jiří Bělohlávek
by artist: BBC Symphony Orchestra
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genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride: ACT III, Scene 4. Mařenka Ne, tomu nevěřím
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The Bartered Bride: ACT III, Scene 5. Vašek Co... co pořáde chcete?
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by artist: Aleš Voráček
by artist: Jiří Bělohlávek
by artist: BBC Symphony Orchestra
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride: ACT III, Scene 5. Vašek Co... co pořáde chcete?
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The Bartered Bride: ACT III, Všichni Rozmysli si, Mařenko, rozmysli
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: The Bartered Bride: ACT III, Všichni Rozmysli si, Mařenko, rozmysli
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The Bartered Bride: ACT III, Scene 7. Jeník Mařenko má, Mařenko má
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genre: classical
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The Bartered Bride: ACT III, Jeník Utiš se, dívko, utiš se
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The Bartered Bride: ACT III, Vašek Ne... ne... nebojte se!
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The Bartered Bride: ACT III, Sbor Dobrá věc se podařila
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Smetana: String Quartets
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SMETANA: Polkas, Bagatelles & Impromptus
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Horizons. Piano Music from the Golden Age
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Smetana: Má vlast, JB 1.112 (Live)
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Rafael Kubelík - The Mercury Masters (Vol. 7 - Smetana: Má Vlast)
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Smetana: Piano Works, Vol. 3
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Smetana: Má vlast (Digitally Remastered)
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    date published: 2026-07-08T03:53:27Z
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Smetana: The Moldau & Other Masterpieces
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    date published: 2026-07-06T07:53:57Z
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track: Smetana: Memories of Bohemia in the Form of Polkas, Op. 13: No. 1 in E Minor
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: Smetana: Libuše, Act 1: Overture
track: Smetana: On the Seashore, Op. 17

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Smetana: Bagatelles et impromptus: No. 7, L'amour
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Smetana: Libuše, Act 1: Overture
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subject of: OpenTimestamps Proof of Existence
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audio: Smetana: Libuše, Act 1: Overture
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Smetana: On the Seashore, Op. 17
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Smetana, Martinů & Eben: Piano Trios
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Smetana: The Two Widows, JB 1:108
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Smetana: Scenes from the Operas
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track: The Bartered Bride, JB 1:100, Act I, Scene 1: Let Us Rejoice, Let´s Be Merry
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  by artist: Czech Philharmonic
  by artist: Prague Philharmonic Choir
  by artist: Zdeněk Košler
  by artist: Josef Veselka
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    type: MusicAlbum
    date published: 2003-01-13
  popularity: 7
  genre: classical
  genre: late-romantic-era
  genre: czech-classical
  genre: early-modern-classical
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
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track: The Bartered Bride, JB 1:100, Act II, Scene 1: Furiant
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  genre: classical
  genre: late-romantic-era
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  additional property: OTSTimestamp
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  subject of: OpenTimestamps Proof of Existence
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track: The Bartered Bride, JB 1:100, Act III, Scene 3: We Shall Make a Graceful Little Bear of You ... (Principál komediantů, Esmeralda, komediantka)

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc33e3d02fd176a85ebed867a96ad6cfc6788d88fe2780335f4c76437f6b5f1e. 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/CZA168119092.
date published: 2026-07-08T03:20:19Z

The Bartered Bride, JB 1:100, Act II, Scene 1: Furiant
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additional property: Mode (Major/Minor)
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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The Bartered Bride, JB 1:100, Act III, Scene 3: We Shall Make a Graceful Little Bear of You ... (Principál komediantů, Esmeralda, komediantka)
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duration: PT1M35S
duration ms: 95773
explicit: false
by artist: Bedřich Smetana
by artist: Alfréd Hampel
by artist: Jana Jonasova
by artist: Czech Philharmonic
by artist: Zdeněk Košler
in album: Smetana: The Bartered Bride
  type: MusicAlbum
  date published: 2003-01-13
popularity: 4
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168137092
additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f52e1d6ff6a7bc12a5b843a7af34ebb9c393e9a9dc185bd96925d90ca84d484. 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/CZA168137092.
  date published: 2026-07-08T03:22:41Z
audio: The Bartered Bride, JB 1:100, Act III, Scene 3: We Shall Make a Graceful Little Bear of You ... (Principál komediantů, Esmeralda, komediantka)
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  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
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Smetana: The Bartered Bride. Highlights from the Opera
type: MusicAlbum
date published: 1989-01-01
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  duration: PT6M33S
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  by artist: Zdeněk Košler
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    type: MusicAlbum
    date published: 1989-01-01
  popularity: 1
  genre: classical
  genre: late-romantic-era
  genre: czech-classical
  genre: early-modern-classical
  isrc code: CZA168103092
  additional property: CopyrightID
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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: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168103092
  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 0xce7c37d669e005d4606c0d8215e75c51bfd60ddc1d7d7c26dce79f80b8c5f80d. 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/CZA168103092.
    date published: 2026-07-08T03:53:27Z
  audio: The Bartered Bride, JB 1:100: Overture
    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
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Valence (Positivity)
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track: The Bartered Bride, JB 1:100, Act I, Scene 1: Let Us Rejoice, Let's Be Merry
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  by artist: Czech Philharmonic
  by artist: Prague Philharmonic Choir
  by artist: Zdeněk Košler
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    type: MusicAlbum
    date published: 1989-01-01
  popularity: 2
  genre: classical
  genre: late-romantic-era
  genre: czech-classical
  genre: early-modern-classical
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: The Bartered Bride, JB 1:100, Act I, Scene 5: Finale. Polka and Chorus. Come On, Girl, Let's Be Merry ...
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: The Bartered Bride, JB 1:100, Act I, Scene 5: Finale. Polka and Chorus. Come On, Girl, Let's Be Merry ...

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CopyrightStatus
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA168114092

OTSTimestamp
type: PropertyValue
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2353ebc751e9229620da96ccb3319a0809f090c12aed8b69f6adc0e7772760e6. 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/CZA168114092.
date published: 2026-07-08T03:20:19Z

The Bartered Bride, JB 1:100, Act I, Scene 5: Finale. Polka and Chorus. Come On, Girl, Let's Be Merry ...
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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
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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Smetana: The Bartered Bride (Sung in German)
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date published: 1963-01-01

Smetana: Libuše
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date published: 1995-01-01
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  by artist: Prague National Theatre Orchestra
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  genre: classical
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  genre: czech-classical
  genre: early-modern-classical
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Concert Favourites
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track: Vaughan Williams: 10 Blake Songs: No. 1, Infant Joy
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track: CPE Bach: Notebook for Anna Magdalena Bach: March in D Major (Formerly Attributed to JS Bach as BWV Anh. 122)
track: Gounod: 15 Mélodies enfantines: No. 15, L'arithmétique
track: Ropartz: Jeunes filles: No. 5, La capricieuse
track: Grieg: The Mountain Maid, Op. 67: No. 6, Kidlings' Dance (Version for Trumpet and Piano)
track: Rossini: Péchés de vieillesse, Vol. 5 "Album pour les enfants adolescents": No. 10, Ouf ! Les petits pois
track: Elgar: Dream Children, Op. 43: I. Andante
track: Villa-Lobos: A prole do bebê No. 1, W140: VI. A pobrezinha "A boneca de trapo"
track: Mussorgsky: The Nursery: No. 7, Sailor the Cat
track: Mompou: Scènes d'enfants: No. 5, Jeunes filles au jardin
track: Britten: 4 Chansons françaises: No. 3, L'enfance
track: Pierné: Album pour mes petits amis, Op. 14: No. 6, Marche des petits soldats de plomb
track: Berlioz: L'enfance du Christ, Op. 25, H 130, Pt. 2 "La fuite en Égypte": L'adieu des bergers. "Il s'en va loin de la terre" (Chœur)
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track: Granados: Cuentos de la juventud, Op. 1: No. 1, Dedicatoria (Transcr. Isbin for Guitar)
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track: Brahms: 15 Volkskinderlieder, WoO 31: No. 4, Sandmännchen (Orch. Mackerras)
track: Reger: 5 Neue Kinderlieder, Op. 142: No. 3, Maria am Rosenstrausch
track: Pergolesi: Laudate pueri Dominum: VII. Sicut erat in principio
track: Françaix: 15 Portraits d'enfants d'Auguste Renoir: No. 7, Fillette au chapeau bleu

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subject of: OpenTimestamps Proof of Existence
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Handel: Laudate pueri Dominum, HWV 237: I. Laudate pueri Dominum
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Stravinsky: Valse pour les enfants
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Stravinsky: Valse pour les enfants
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Bach: Notebook for Wilhelm Friedemann Bach: No. 8, Prelude in F Major, BWV 927
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Bach: Notebook for Wilhelm Friedemann Bach: No. 8, Prelude in F Major, BWV 927
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Bartók: For Children, Sz. 42, Book I "Hungarian Folk Songs": No. 13, Runaway Horse. Andante
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audio: Bartók: For Children, Sz. 42, Book I "Hungarian Folk Songs": No. 13, Runaway Horse. Andante
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Kosma: Suite symphonique d'après "Les portes de la nuit": IV. Chanson "Les enfants qui s'aiment"
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  date published: 2026-07-02T03:55:08Z
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Shostakovich: Children's Notebook, Op. 69: No. 4, Merry Tale
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Vaughan Williams: 10 Blake Songs: No. 1, Infant Joy
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Vaughan Williams: 10 Blake Songs: No. 1, Infant Joy
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Beethoven: Piano Exercise in C Major, Hess 59
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by artist: Aurélien Pontier
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Beethoven: Piano Exercise in C Major, Hess 59
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Ravel: Ma mère l'Oye, M. 60: III. Laideronnette, impératrice des pagodes
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Ravel: Ma mère l'Oye, M. 60: III. Laideronnette, impératrice des pagodes
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Webern: Kinderstück
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Webern: Kinderstück
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Debussy / Orch. Caplet: La boîte à joujoux, CD 136, L. 128: I. Prélude. Le sommeil de la boîte
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Debussy / Orch. Caplet: La boîte à joujoux, CD 136, L. 128: I. Prélude. Le sommeil de la boîte
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Khachaturian: Children's Album, Book I, Op. 62: No. 1, Andantino
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audio: Khachaturian: Children's Album, Book I, Op. 62: No. 1, Andantino
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Zelenka: Laudate pueri, ZWV 81: I. Laudate pueri
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  date published: 2026-07-02T03:55:08Z
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Mendelssohn: 6 Kinderstücke, Op. 72: No. 1, Allegro non troppo, MWV U171
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subject of: OpenTimestamps Proof of Existence
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audio: Mendelssohn: 6 Kinderstücke, Op. 72: No. 1, Allegro non troppo, MWV U171
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Vivaldi: Gloria in D Major, RV 589: I. Gloria in excelsis Deo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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CPE Bach: Notebook for Anna Magdalena Bach: March in D Major (Formerly Attributed to JS Bach as BWV Anh. 122)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: CPE Bach: Notebook for Anna Magdalena Bach: March in D Major (Formerly Attributed to JS Bach as BWV Anh. 122)
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Gounod: 15 Mélodies enfantines: No. 15, L'arithmétique
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Gounod: 15 Mélodies enfantines: No. 15, L'arithmétique
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Ropartz: Jeunes filles: No. 5, La capricieuse
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Ropartz: Jeunes filles: No. 5, La capricieuse
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Grieg: The Mountain Maid, Op. 67: No. 6, Kidlings' Dance (Version for Trumpet and Piano)
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  date published: 2026-07-02T03:55:08Z
audio: Grieg: The Mountain Maid, Op. 67: No. 6, Kidlings' Dance (Version for Trumpet and Piano)
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Rossini: Péchés de vieillesse, Vol. 5 "Album pour les enfants adolescents": No. 10, Ouf ! Les petits pois
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  date published: 2026-07-02T11:34:59Z
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Elgar: Dream Children, Op. 43: I. Andante
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Elgar: Dream Children, Op. 43: I. Andante
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Villa-Lobos: A prole do bebê No. 1, W140: VI. A pobrezinha "A boneca de trapo"
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
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Mussorgsky: The Nursery: No. 7, Sailor the Cat
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Mussorgsky: The Nursery: No. 7, Sailor the Cat
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Mompou: Scènes d'enfants: No. 5, Jeunes filles au jardin
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Mompou: Scènes d'enfants: No. 5, Jeunes filles au jardin
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Britten: 4 Chansons françaises: No. 3, L'enfance
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T01:26:17Z
audio: Britten: 4 Chansons françaises: No. 3, L'enfance
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Pierné: Album pour mes petits amis, Op. 14: No. 6, Marche des petits soldats de plomb
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T01:26:17Z
audio: Pierné: Album pour mes petits amis, Op. 14: No. 6, Marche des petits soldats de plomb
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Berlioz: L'enfance du Christ, Op. 25, H 130, Pt. 2 "La fuite en Égypte": L'adieu des bergers. "Il s'en va loin de la terre" (Chœur)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Berlioz: L'enfance du Christ, Op. 25, H 130, Pt. 2 "La fuite en Égypte": L'adieu des bergers. "Il s'en va loin de la terre" (Chœur)
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Tchaikovsky: Children's Album, Op. 39: No. 23, The Organ-Grinder Sings
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
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Saint-Saëns: Étienne Marcel, Act III: Divertissement. Entrée des écoliers et des ribaudes (Transcr. Debussy for 2 Pianos)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
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Granados: Cuentos de la juventud, Op. 1: No. 1, Dedicatoria (Transcr. Isbin for Guitar)
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subject of: OpenTimestamps Proof of Existence
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Franck: Les plaintes d'une poupée, FWV 20
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subject of: OpenTimestamps Proof of Existence
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audio: Franck: Les plaintes d'une poupée, FWV 20
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Brahms: 15 Volkskinderlieder, WoO 31: No. 4, Sandmännchen (Orch. Mackerras)
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Reger: 5 Neue Kinderlieder, Op. 142: No. 3, Maria am Rosenstrausch
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  date published: 2026-07-07T18:50:38Z
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Pergolesi: Laudate pueri Dominum: VII. Sicut erat in principio
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