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type: MusicGroup
genre: classical
popularity: 42
followers: 581
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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album: Poulenc, Messager, Horovitz, Jeanjean, Françaix, Martinů & Bassi: Music for Clarinet and Piano
  type: MusicAlbum
  date published: 2003-01-01
  track: Horovitz: Sonatina for Clarinet and Piano: I. Allegro calmato
  track: Messager: Solo de concours
  track: Horovitz: Sonatina for Clarinet and Piano: II. Lento, quasi andante
  track: Horovitz: Sonatina for Clarinet and Piano: III. Con brio
track: Lieder ohne Worte V, Op. 62: VI. Allegretto grazioso, MWV U161 "Spring Song" (Arr. Ottensamer for Clarinet & Piano)
track: Lieder ohne Worte VII, Op. 85: II. Allegro agitato (Arr. Ottensamer for Clarinet & Piano)
track: Lieder ohne Worte VI, Op. 67: V. Moderato, MWV U184 "The Shepherd's Complaint" (Arr. Ottensamer for Clarinet & Piano)

Horovitz: Sonatina for Clarinet and Piano: I. Allegro calmato
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by artist: Julian Bliss
by artist: Julien Quentin
in album: Poulenc, Messager, Horovitz, Jeanjean, Françaix, Martinů & Bassi: Music for Clarinet and Piano
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  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: 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 0xf85a5359c16fd1626fa0b16c8fdaccb44b8db1167f63c04a58fc0281a46afce5. 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/GBAYC0301898.
  date published: 2026-07-08T08:56:20Z
audio: Horovitz: Sonatina for Clarinet and Piano: I. Allegro calmato
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Messager: Solo de concours
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duration: PT5M29S
duration ms: 329733
explicit: false
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by artist: Julian Bliss
by artist: Julien Quentin
in album: Poulenc, Messager, Horovitz, Jeanjean, Françaix, Martinů & Bassi: Music for Clarinet and Piano
  type: MusicAlbum
  date published: 2003-01-01
popularity: 1
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T20:42:35Z
audio: Messager: Solo de concours
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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

Horovitz: Sonatina for Clarinet and Piano: II. Lento, quasi andante
type: MusicRecording
duration: PT3M56S
duration ms: 236173
explicit: false
by artist: Joseph Horovitz
by artist: Julian Bliss
by artist: Julien Quentin
in album: Poulenc, Messager, Horovitz, Jeanjean, Françaix, Martinů & Bassi: Music for Clarinet and Piano
  type: MusicAlbum
  date published: 2003-01-01
popularity: 2
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b6b99c8f5a97e66ad9312be300cab8ac1c9232843e58cc1f315020ec1109dc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0301899.
  date published: 2026-07-31T00:26:26Z
audio: Horovitz: Sonatina for Clarinet and Piano: II. Lento, quasi andante
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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

Horovitz: Sonatina for Clarinet and Piano: III. Con brio
type: MusicRecording
duration: PT4M1S
duration ms: 241400
explicit: false
by artist: Joseph Horovitz
by artist: Julian Bliss
by artist: Julien Quentin
in album: Poulenc, Messager, Horovitz, Jeanjean, Françaix, Martinů & Bassi: Music for Clarinet and Piano
  type: MusicAlbum
  date published: 2003-01-01
popularity: 3
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc629f5f6d1d11ec73d1a7d7104d5dc3896b4c141d2c06cbab9260a3ef316696. 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/GBAYC0301900.
  date published: 2026-07-31T02:19:15Z
audio: Horovitz: Sonatina for Clarinet and Piano: III. Con brio
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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 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

Lieder ohne Worte V, Op. 62: VI. Allegretto grazioso, MWV U161 "Spring Song" (Arr. Ottensamer for Clarinet & Piano)
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by artist: Felix Mendelssohn
by artist: Andreas Ottensamer
by artist: Julien Quentin
in album: Blue Hour: Mendelssohn Edition
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  date published: 2021-06-18
genre: classical
genre: early-romantic-era
genre: german-romanticism
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Lieder ohne Worte V, Op. 62: VI. Allegretto grazioso, MWV U161 "Spring Song" (Arr. Ottensamer for Clarinet & Piano)
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Lieder ohne Worte VII, Op. 85: II. Allegro agitato (Arr. Ottensamer for Clarinet & Piano)
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by artist: Andreas Ottensamer
by artist: Julien Quentin
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genre: classical
genre: early-romantic-era
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audio: Lieder ohne Worte VII, Op. 85: II. Allegro agitato (Arr. Ottensamer for Clarinet & Piano)
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Lieder ohne Worte VI, Op. 67: V. Moderato, MWV U184 "The Shepherd's Complaint" (Arr. Ottensamer for Clarinet & Piano)
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