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type: MusicGroup
popularity: 4
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xc45c365983b0c12304ad4f352ee2897ec23d688803b397aaa1114096a5ac7ce0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a6ffe79-987a-4c70-a24c-01123876d82d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a6ffe79-987a-4c70-a24c-01123876d82d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9a6ffe79-987a-4c70-a24c-01123876d82d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45c365983b0c12304ad4f352ee2897ec23d688803b397aaa1114096a5ac7ce0. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a6ffe79-987a-4c70-a24c-01123876d82d.json and https://artists.proofprofile.net/proofs/artist/9a6ffe79-987a-4c70-a24c-01123876d82d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-19T03:51:26Z
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album: 50 Classical Favourites from Films, Vol. 11
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  date published: 2000-01-01
  track: Piano Concerto No. 2 in F Major, Op. 102: I. Allegro
    type: MusicRecording
    duration: PT7M10S
    duration ms: 430038
    explicit: false
    by artist: Pyotr Ilyich Tchaikovsky
    by artist: Robert Schumann
    by artist: Dmitri Shostakovich
    by artist: Rudolf Sieczynski
    by artist: Gaspare Spontini
    by artist: Bedřich Smetana
    by artist: Johann Strauss II
    by artist: Johann Strauss I
    by artist: Richard Strauss
    by artist: Igor Stravinsky
    by artist: Franz von Suppé
    by artist: Karol Szymanowski
    by artist: Leonard Bernstein
    by artist: New York Philharmonic
    in album: 50 Classical Favourites from Films, Vol. 11
      type: MusicAlbum
      date published: 2000-01-01
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    additional property: CopyrightStatus
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      value: registered
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      type: PropertyValue
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960108
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLGL1213951
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-29T13:09:35Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4155f89f10b1f1fcd9fa73801ceab238e5a553ac35215196b665d6cb190060. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLGL1213951 — a six-check JSON result.
      date published: 2026-07-29T13:09:35Z
    audio: Piano Concerto No. 2 in F Major, Op. 102: I. Allegro
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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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        type: PropertyValue
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      additional property: Danceability
        type: PropertyValue
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      additional property: Speechiness
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      additional property: Loudness (dB)
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      additional property: Key Name
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        value: Bb
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album: Szymanowski: King Roger
  type: MusicAlbum
  date published: 1998-04-07
album: Szymanowski: King Roger / Prince Potemkin
  type: MusicAlbum
  date published: 1994-06-06
album: Famous Opera Arias & Songs (Highlights)
  type: MusicAlbum
  date published: 2024-07-19
album: Stanisław Moniuszko - Songs / Arias / Overtures. The Best 20th-Century Recordings
  type: MusicAlbum
  date published: 2020-05-05
  track: Uwertura fantastyczna Bajka
    type: MusicRecording
    duration: PT12M29S
    duration ms: 749245
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    by artist: Orkiestra Opery w Poznaniu
    by artist: Walerian Bierdiajew
    in album: Stanisław Moniuszko - Songs / Arias / Overtures. The Best 20th-Century Recordings
      type: MusicAlbum
      date published: 2020-05-05
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: CopyrightRegisteredAt
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960138
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900117
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-29T19:35:34Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9592f0f5fcbc633ffaa212d2e0d1e455fc00ff21f28bb43e6aa216b615a5a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900117 — a six-check JSON result.
      date published: 2026-07-29T19:35:34Z
    audio: Uwertura fantastyczna Bajka
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Znasz-li ten kraj
  track: Straszny Dwór: Ten zegar stary
album: Flis
album: Solisten der Staatsoper Warschau (Stereo Version)
album: Moniuszko: Halka
album: Leopold Stokowski in Poland (From the Polish Radio Archives)
album: Szymanowski: Stabat Mater / Veni Creator / Litania
album: Penderecki: Te Deum - Lacrimosa
album: MONIUSZKO: STRASZNY DWÓR "LE CHÂTEAU MYSTÉRIEUX"
album: Szymanowski: Stabat Mater - Litania - Demeter
album: 20th Century Classics - Karol Szymanowski
album: Karol Szymanowski - King Roger & Harnasie
album: Szymanowski: Stabat Mater & Symphonie No. 3 "Le chant de la nuit" (Mono Version)
album: Szymanowski: Stabat Mater, Op. 53 (Mono Version)
album: Best of Szymanowski

Time Signature
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value: 5

Danceability
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value: 0.318

Energy
type: PropertyValue
value: 0.155

Speechiness
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value: 0.058

Acousticness
type: PropertyValue
value: 0.956

Instrumentalness
type: PropertyValue
value: 0.619

Liveness
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Valence (Positivity)
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Loudness (dB)
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value: -17.96

Key Name
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Mode Name
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Znasz-li ten kraj
type: MusicRecording
duration: PT5M12S
duration ms: 312859
explicit: false
by artist: Stanisław Moniuszko
by artist: Andrzej Hiolski
by artist: Sergiusz Nadgryzowski
in album: Stanisław Moniuszko - Songs / Arias / Overtures. The Best 20th-Century Recordings
  type: MusicAlbum
  date published: 2020-05-05
isrc code: PLZ041900103
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T15:43:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960427
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900103
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:59:18Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60261b07d53532326b9847712b9c2c0b3e172fdb049fc9bfdc0111d1b23e1b63. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900103 — a six-check JSON result.
  date published: 2026-07-31T15:59:18Z
audio: Znasz-li ten kraj
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 152.657
  additional property: Musical Key
    type: PropertyValue
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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: 0.277
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Straszny Dwór: Ten zegar stary
type: MusicRecording
duration: PT3M32S
duration ms: 212537
explicit: false
by artist: Stanisław Moniuszko
by artist: Bernard Ładysz
by artist: Orkiestra Opery w Warszawie
by artist: Jerzy Semkow
in album: Stanisław Moniuszko - Songs / Arias / Overtures. The Best 20th-Century Recordings
  type: MusicAlbum
  date published: 2020-05-05
isrc code: PLZ041900115
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:19:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15901ab8ee6d10ce3716534ef40508ac0b002d74df75de74bfe2cb65d737672f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900115
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15901ab8ee6d10ce3716534ef40508ac0b002d74df75de74bfe2cb65d737672f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900115 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: Straszny Dwór: Ten zegar stary
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Key Name
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Flis
type: MusicAlbum
date published: 2020-03-03
track: Flis: Uwertura i Chór (Pędzą chmury, zcichły grzmoty)
  type: MusicRecording
  duration: PT8M50S
  duration ms: 530406
  explicit: false
  by artist: Stanisław Moniuszko
  by artist: Chór Filharmonii Narodowej
  by artist: Orkiestra Filharmonii Narodowej
  by artist: Zdzisław Górzyński
  in album: Flis
    type: MusicAlbum
    date published: 2020-03-03
  isrc code: PLZ041900084
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T23:54:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa5aec49295c137c8d5b14d07117739df5d9425a869b5cd8a1038e8a3ed15f4dc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900084
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aec49295c137c8d5b14d07117739df5d9425a869b5cd8a1038e8a3ed15f4dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLZ041900084 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
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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
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Key Name
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Solisten der Staatsoper Warschau (Stereo Version)
type: MusicAlbum
date published: 1959-01-01

Moniuszko: Halka
type: MusicAlbum
date published: 2006-11-09
track: Halka, Act I: Overture
  type: MusicRecording
  duration: PT9M9S
  duration ms: 549426
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  by artist: Wielki Theatre Orchestra
  by artist: Robert Satanowski
  in album: Moniuszko: Halka
    type: MusicAlbum
    date published: 2006-11-09
  isrc code: DEB208703201
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  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T13:35:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcea1d28ebc152e5681f0119c3b1f7d5d79d1276e04fb6cc7c011d57f7b16ee07
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB208703201
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea1d28ebc152e5681f0119c3b1f7d5d79d1276e04fb6cc7c011d57f7b16ee07. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB208703201 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Halka, Act I: 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
      type: PropertyValue
      value: 0.254
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.849
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.075
    additional property: Liveness
      type: PropertyValue
      value: 0.053
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.108
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.788
    additional property: Key Name
      type: PropertyValue
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    additional property: Mode Name
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track: Halka, Act I: Niechaj żyje para młoda
  type: MusicRecording
  duration: PT4M59S
  duration ms: 299973
  explicit: false
  by artist: Stanisław Moniuszko
  by artist: Jerzy Ostapiuk
  by artist: Marek Wojciechowski
  by artist: Wielki Theatre Chorus
  by artist: Wielki Theatre Orchestra
  by artist: Robert Satanowski
  in album: Moniuszko: Halka
    type: MusicAlbum
    date published: 2006-11-09
  isrc code: DEB208703202
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x2b13603de4097bc938048319eaf5db4ab0aee4fe10fedb4b4be6856531dda6f4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960435
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB208703202
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T16:33:26Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b13603de4097bc938048319eaf5db4ab0aee4fe10fedb4b4be6856531dda6f4. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB208703202 — a six-check JSON result.
    date published: 2026-07-31T16:33:26Z
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    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
      value: 0.534
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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      value: -16.953
    additional property: Key Name
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track: Halka, Act I: Mazurka
  type: MusicRecording
  duration: PT3M37S
  duration ms: 217266
  explicit: false
  by artist: Stanisław Moniuszko
  by artist: Wielki Theatre Orchestra
  by artist: Robert Satanowski
  in album: Moniuszko: Halka
    type: MusicAlbum
    date published: 2006-11-09
  isrc code: DEB208703207
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T07:36:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x301be21d9a91e94d23536a46f772326c5701d08059790d606d9a9776e5446466
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Halka, Act I: Mazurka

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB208703207

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301be21d9a91e94d23536a46f772326c5701d08059790d606d9a9776e5446466. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB208703207 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Halka, Act I: Mazurka
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 115.154
additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
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  value: 0.499
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
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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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additional property: Mode Name
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Leopold Stokowski in Poland (From the Polish Radio Archives)
type: MusicAlbum
date published: 2021-09-27
track: Symphony No. 1: III. Allegretto misterioso
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235786
  explicit: false
  by artist: Witold Lutosławski
  by artist: Orkiestra Symfoniczna Filharmonii Narodowej
  by artist: Leopold Stokowski
  in album: Leopold Stokowski in Poland (From the Polish Radio Archives)
    type: MusicAlbum
    date published: 2021-09-27
  genre: early-modern-classical
  genre: contemporary-classical
  genre: polish-contemporary-classical
  isrc code: PLA392100093
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T15:12:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf8080b836048b3f2ec0fdb1e948b570727b9b1d0023b54d3c52dc380cbb1bbc9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960418
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA392100093
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T15:20:15Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8080b836048b3f2ec0fdb1e948b570727b9b1d0023b54d3c52dc380cbb1bbc9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA392100093 — a six-check JSON result.
    date published: 2026-07-31T15:20:15Z
  audio: Symphony No. 1: III. Allegretto misterioso
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.33
    additional property: Energy
      type: PropertyValue
      value: 0.134
    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.171
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.798
    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
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Szymanowski: Stabat Mater / Veni Creator / Litania
type: MusicAlbum
date published: 2000-07-21
track: Stabat Mater, Op. 53: I. Stabat mater dolorosa / Stala matka bolejaca: Andante mesto
  type: MusicRecording
  duration: PT7M49S
  duration ms: 469533
  explicit: false
  by artist: Karol Szymanowski
  by artist: Jadwiga Gadulanka
  by artist: Andrzej Hiolski
  by artist: Krystyna Szostek Radkowa
  by artist: Jan Wojtacha
  by artist: Polish State Philharmonic Chorus (Katowice)
  by artist: Polish State Philharmonic Orchestra, Katowice
  by artist: Karol Stryja
  in album: Szymanowski: Stabat Mater / Veni Creator / Litania
    type: MusicAlbum
    date published: 2000-07-21
  isrc code: HKI199315101
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T10:54:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc377daccc4f44da1020dcb4b8fac7f2a09f5035e7c032829397c701e81ffe2e1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960397
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960397
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315101
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T12:24:41Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377daccc4f44da1020dcb4b8fac7f2a09f5035e7c032829397c701e81ffe2e1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315101 — a six-check JSON result.
    date published: 2026-07-31T12:24:41Z
  audio: Stabat Mater, Op. 53: I. Stabat mater dolorosa / Stala matka bolejaca: Andante mesto
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 100.778
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.067
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
      type: PropertyValue
      value: 0.98
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -35.519
    additional property: Key Name
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    additional property: Mode Name
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      value: Major
track: Stabat Mater, Op. 53: II. Quis est homo qui non fleret / I ktoz widzac tak cierpiaca: Moderato
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185226
  explicit: false
  by artist: Karol Szymanowski
  by artist: Jadwiga Gadulanka
  by artist: Andrzej Hiolski
  by artist: Krystyna Szostek Radkowa
  by artist: Jan Wojtacha
  by artist: Polish State Philharmonic Chorus (Katowice)
  by artist: Polish State Philharmonic Orchestra, Katowice
  by artist: Karol Stryja
  in album: Szymanowski: Stabat Mater / Veni Creator / Litania
    type: MusicAlbum
    date published: 2000-07-21
  isrc code: HKI199315102
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-08-01T03:55:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x071ea3ad78602fbedf736e191212e4f0f6bb81b535f6d33f64bd1d37d012035b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 960509
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960509
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315102
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-08-01T04:30:37Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071ea3ad78602fbedf736e191212e4f0f6bb81b535f6d33f64bd1d37d012035b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315102 — a six-check JSON result.
    date published: 2026-08-01T04:30:37Z
  audio: Stabat Mater, Op. 53: II. Quis est homo qui non fleret / I ktoz widzac tak cierpiaca: Moderato
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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
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.134
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.646
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
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track: Stabat Mater, Op. 53: III. Eia Mater, fons amoris / O Matka, zrodlo wszechmilosci: Lento dolcissimo
  type: MusicRecording
  duration: PT4M53S
  duration ms: 293906
  explicit: false
  by artist: Karol Szymanowski
  by artist: Jadwiga Gadulanka
  by artist: Andrzej Hiolski
  by artist: Krystyna Szostek Radkowa
  by artist: Jan Wojtacha
  by artist: Polish State Philharmonic Chorus (Katowice)
  by artist: Polish State Philharmonic Orchestra, Katowice
  by artist: Karol Stryja
  in album: Szymanowski: Stabat Mater / Veni Creator / Litania
    type: MusicAlbum
    date published: 2000-07-21
  isrc code: HKI199315103
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Stabat Mater, Op. 53: III. Eia Mater, fons amoris / O Matka, zrodlo wszechmilosci: Lento dolcissimo
track: Stabat Mater, Op. 53: VI. Christe, cum sit hinc exire / Chrystus niech mi bedzie grodem: Andante tranquillissimo

CopyrightID
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CopyrightStatus
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value: registered

CopyrightRegisteredAt
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value: 2026-08-01T00:37:29+00:00

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xac7e4975561a7cd3663d34164652f006ff181351aadb9aac85c9558962dca423

OTSHash
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OTSBitcoinBlock
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value: 960494

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/960494

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315103

OTSTimestamp
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value: 2026-08-01T01:44:32Z

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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7e4975561a7cd3663d34164652f006ff181351aadb9aac85c9558962dca423. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315103 — a six-check JSON result.
date published: 2026-08-01T01:44:32Z

Stabat Mater, Op. 53: III. Eia Mater, fons amoris / O Matka, zrodlo wszechmilosci: Lento dolcissimo
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additional property: Tempo (BPM)
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  value: 103.162
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
  type: PropertyValue
  value: 0.081
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.029
additional property: Loudness (dB)
  type: PropertyValue
  value: -30.604
additional property: Key Name
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additional property: Mode Name
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Stabat Mater, Op. 53: VI. Christe, cum sit hinc exire / Chrystus niech mi bedzie grodem: Andante tranquillissimo
type: MusicRecording
duration: PT5M18S
duration ms: 318000
explicit: false
by artist: Karol Szymanowski
by artist: Jadwiga Gadulanka
by artist: Andrzej Hiolski
by artist: Krystyna Szostek Radkowa
by artist: Jan Wojtacha
by artist: Polish State Philharmonic Chorus (Katowice)
by artist: Polish State Philharmonic Orchestra, Katowice
by artist: Karol Stryja
in album: Szymanowski: Stabat Mater / Veni Creator / Litania
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  date published: 2000-07-21
isrc code: HKI199315106
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xb9c88256bb60f283d9656b7b7d116c2e7ededc1ba33270c12647fd558e73fc71
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c88256bb60f283d9656b7b7d116c2e7ededc1ba33270c12647fd558e73fc71. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199315106 — a six-check JSON result.
  date published: 2026-07-31T17:29:52Z
audio: Stabat Mater, Op. 53: VI. Christe, cum sit hinc exire / Chrystus niech mi bedzie grodem: Andante tranquillissimo
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  additional property: Tempo (BPM)
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    value: 101.077
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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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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    type: PropertyValue
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Penderecki: Te Deum - Lacrimosa
type: MusicAlbum
date published: 2013-04-01
track: Lacrimosa
  type: MusicRecording
  duration: PT4M58S
  duration ms: 298853
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  by artist: Krzysztof Penderecki
  by artist: Jadwiga Gadulanka
  by artist: Polish Radio Chorus, Krakow
  by artist: Polish Radio Symphony Orchestra, Krakow
  in album: Penderecki: Te Deum - Lacrimosa
    type: MusicAlbum
    date published: 2013-04-01
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    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-30T22:13:50+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x5085902a8a321fc88caa76f23d4a29ef29ff2fe90202c7a1a7327e9fec67ad4d
  additional property: OTSHash
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960327
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA160440203
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T00:26:26Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085902a8a321fc88caa76f23d4a29ef29ff2fe90202c7a1a7327e9fec67ad4d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA160440203 — a six-check JSON result.
    date published: 2026-07-31T00:26:26Z
  audio: Lacrimosa
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 97.266
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
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      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.074
    additional property: Energy
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    additional property: Acousticness
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    additional property: Instrumentalness
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      value: 0.335
    additional property: Liveness
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    additional property: Valence (Positivity)
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      value: 0.032
    additional property: Loudness (dB)
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MONIUSZKO: STRASZNY DWÓR "LE CHÂTEAU MYSTÉRIEUX"
type: MusicAlbum
date published: 1995-06-01

Szymanowski: Stabat Mater - Litania - Demeter
type: MusicAlbum
date published: 2013-04-01

20th Century Classics - Karol Szymanowski
type: MusicAlbum
date published: 2008-06-02

Karol Szymanowski - King Roger & Harnasie
type: MusicAlbum
date published: 1988-04-16

Szymanowski: Stabat Mater & Symphonie No. 3 "Le chant de la nuit" (Mono Version)
type: MusicAlbum
date published: 1962-01-01

Szymanowski: Stabat Mater, Op. 53 (Mono Version)
type: MusicAlbum
date published: 1959

Best of Szymanowski
type: MusicAlbum
date published: 2015-03-23