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type: MusicGroup
genre: chamber music
popularity: 3
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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track: Piano Quintet No. 1: II. Presto
track: Piano Quintet No. 2: I. Moderato
track: Piano Quintet No. 1: I. Moderato molto espressivo
track: Piano Quintet No. 1: III. Grave
track: Concerto Grosso No. 1 for 3 Cellos: Andante sostenuto -
track: Concerto Grosso No. 1 for 3 Cellos: Allegro con brio -

Piano Quintet No. 1: II. Presto
type: MusicRecording
duration: PT4M31S
duration ms: 271373
explicit: false
by artist: Grażyna Bacewicz
by artist: Krystian Zimerman
by artist: Kaja Danczowska
by artist: Agata Szymczewska
by artist: Ryszard Groblewski
by artist: Rafal Kwiatkowski
in album: Bacewicz: Piano Sonata No.2; Piano Quintets Nos.1&2
  type: MusicAlbum
  date published: 2011-01-01
genre: neoclassical
isrc code: DEN960902682
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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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 0x47674c1dd05620072cf41428e748237655bbde29d575a71f9434e67620d237f7. 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/DEN960902682.
  date published: 2026-07-08T03:22:41Z
audio: Piano Quintet No. 1: II. Presto
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Piano Quintet No. 2: I. Moderato
type: MusicRecording
duration: PT7M12S
duration ms: 432386
explicit: false
by artist: Grażyna Bacewicz
by artist: Krystian Zimerman
by artist: Kaja Danczowska
by artist: Agata Szymczewska
by artist: Ryszard Groblewski
by artist: Rafal Kwiatkowski
in album: Bacewicz: Piano Sonata No.2; Piano Quintets Nos.1&2
  type: MusicAlbum
  date published: 2011-01-01
genre: neoclassical
isrc code: DEN960902701
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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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 0x42cbaaf33716f9bc3569f63ead3a86930a5adcaade4a85a745e00390942c3b8f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960902701.
  date published: 2026-07-08T08:56:20Z
audio: Piano Quintet No. 2: I. Moderato
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Piano Quintet No. 1: I. Moderato molto espressivo
type: MusicRecording
duration: PT8M18S
duration ms: 498853
explicit: false
by artist: Grażyna Bacewicz
by artist: Krystian Zimerman
by artist: Kaja Danczowska
by artist: Agata Szymczewska
by artist: Ryszard Groblewski
by artist: Rafal Kwiatkowski
in album: Bacewicz: Piano Sonata No.2; Piano Quintets Nos.1&2
  type: MusicAlbum
  date published: 2011-01-01
genre: neoclassical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ffecefb3d7ae0070b3f2fc447f8f37fb347fa4b36e0757663fe3e800e95645. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960902681.
  date published: 2026-07-31T02:19:15Z
audio: Piano Quintet No. 1: I. Moderato molto espressivo
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  additional property: Key Name
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    value: E
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isrc code: DEN960902681
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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

Piano Quintet No. 1: III. Grave
type: MusicRecording
duration: PT8M1S
duration ms: 481640
explicit: false
by artist: Grażyna Bacewicz
by artist: Krystian Zimerman
by artist: Kaja Danczowska
by artist: Agata Szymczewska
by artist: Ryszard Groblewski
by artist: Rafal Kwiatkowski
in album: Bacewicz: Piano Sonata No.2; Piano Quintets Nos.1&2
  type: MusicAlbum
  date published: 2011-01-01
genre: neoclassical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57f9eb39ae7a3a6e3d58355dbd69043d59f3d9f58ef1fe1160fa28973f79728. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960902683.
  date published: 2026-07-31T15:59:18Z
audio: Piano Quintet No. 1: III. Grave
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  additional property: Danceability
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  additional property: Acousticness
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isrc code: DEN960902683
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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

Concerto Grosso No. 1 for 3 Cellos: Andante sostenuto -
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duration: PT8M7S
duration ms: 487880
explicit: false
by artist: Krzysztof Penderecki
by artist: Ivan Monighetti
by artist: Arto Noras
by artist: Rafal Kwiatkowski
by artist: Warsaw Philharmonic Orchestra
by artist: Antoni Wit
in album: Penderecki, K.: Concerto Grosso No. 1 for 3 Cellos / Largo / Sonata for Cello and Orchestra
  type: MusicAlbum
  date published: 2008-10-28
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9fd42ed79a47355216130200182d796f58496b7221face3d548b7cd2a3393f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKI190843501.
  date published: 2026-07-31T19:53:13Z
audio: Concerto Grosso No. 1 for 3 Cellos: Andante sostenuto -
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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: Liveness
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  additional property: Valence (Positivity)
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isrc code: HKI190843501
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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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 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

Concerto Grosso No. 1 for 3 Cellos: Allegro con brio -
type: MusicRecording
duration: PT4M28S
duration ms: 268560
explicit: false
by artist: Krzysztof Penderecki
by artist: Ivan Monighetti
by artist: Arto Noras
by artist: Rafal Kwiatkowski
by artist: Warsaw Philharmonic Orchestra
by artist: Antoni Wit
in album: Penderecki, K.: Concerto Grosso No. 1 for 3 Cellos / Largo / Sonata for Cello and Orchestra
  type: MusicAlbum
  date published: 2008-10-28
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
audio: Concerto Grosso No. 1 for 3 Cellos: Allegro con brio -
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Concerto Grosso No. 1 for 3 Cellos: Allegro con brio -
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by artist: Krzysztof Penderecki
by artist: Ivan Monighetti
by artist: Arto Noras
by artist: Rafal Kwiatkowski
by artist: Warsaw Philharmonic Orchestra
by artist: Antoni Wit
in album: Penderecki, K.: Concerto Grosso No. 1 for 3 Cellos / Largo / Sonata for Cello and Orchestra
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  date published: 2026-07-31T05:48:18Z
audio: Concerto Grosso No. 1 for 3 Cellos: Allegro con brio -
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