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album: Armenian Cello Concertos - Past Meets Present
album: Armenian Rhapsody
album: Russian Cello Sonatas
album: Weinberg: Cello Sonatas Nos. 1 and 2 / Cello Solo
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  subject of: OpenTimestamps Proof of Existence
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T02:30:29Z
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track: Cello Sonata in B Minor: III. Maestoso - Presto (Abridged Version)
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  by artist: Alexander Chaushian
  by artist: Yevgeny Sudbin
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    date published: 2011-03-01
  genre: classical
  genre: late-romantic-era
  genre: early-modern-classical
  genre: russian-romanticism
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAES1158070
  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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: Cello Sonata in B Minor: III. Maestoso - Presto (Abridged Version)
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Weinberg: Cello Sonatas Nos. 1 and 2 / Cello Solo
type: MusicAlbum
date published: 2007-11-06

Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
type: MusicAlbum
date published: 2009-02-24
track: Phantasie Piano Trio in C Minor, "Piano Trio No. 1": I. Allegro moderato ma con fuoco
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  by artist: Jack Liebeck
  by artist: Alexander Chaushian
  by artist: Ashley Wass
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    type: MusicAlbum
    date published: 2009-02-24
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190836801
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T02:19:15Z
  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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcef58c39ac09900e203b1932328b613ceebdf585a4ac2c5e01ab4daf1e651aa. 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/HKI190836801.
    date published: 2026-07-31T02:19:15Z
  audio: Phantasie Piano Trio in C Minor, "Piano Trio No. 1": I. Allegro moderato ma con fuoco
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track: Phantasie Piano Trio in C Minor, "Piano Trio No. 1": II. Andante con molto espressione
  type: MusicRecording
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  by artist: Jack Liebeck
  by artist: Alexander Chaushian
  by artist: Ashley Wass
  in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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    date published: 2009-02-24
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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 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 0x0bea24589f6de8d467f50bac6555cf71cb078811b5716eec32ae4911c81d614e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190836802.
    date published: 2026-07-31T17:29:52Z
  audio: Phantasie Piano Trio in C Minor, "Piano Trio No. 1": II. Andante con molto espressione
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track: Phantasie Piano Trio in C Minor, "Piano Trio No. 1": III. Allegro scherzoso
  type: MusicRecording
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  by artist: Frank Bridge
  by artist: Jack Liebeck
  by artist: Alexander Chaushian
  by artist: Ashley Wass
  in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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    date published: 2009-02-24
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Phantasie Piano Trio in C Minor, "Piano Trio No. 1": III. Allegro scherzoso
track: Miniatures for piano trio: Set 1: No. 1. Minuet
track: Miniatures for piano trio: Set 1: No. 2. Gavotte
track: Miniatures for piano trio: Set 1: No. 3. Allegretto
track: Miniatures for piano trio: Set 2: No. 4. Romance
track: Miniatures for piano trio: Set 2: No. 5. Intermezzo
track: Miniatures for piano trio: Set 2: No. 6. Saltarello
track: Miniatures for piano trio: Set 3: No. 7. Valse russe
track: Miniatures for piano trio: Set 3: No. 8. Hornpipe
track: Miniatures for piano trio: Set 3: No. 9. Marche militaire

OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190836803

OTSTimestamp
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value: 2026-07-08T03:53:27Z

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 0xf70e1fb28fcb846d77f6d577428332bb9aca64e6b0785c918960a255b1878d36. 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/HKI190836803.
date published: 2026-07-08T03:53:27Z

Phantasie Piano Trio in C Minor, "Piano Trio No. 1": III. Allegro scherzoso
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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: 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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Miniatures for piano trio: Set 1: No. 1. Minuet
type: MusicRecording
duration: PT2M41S
duration ms: 161386
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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  date published: 2009-02-24
isrc code: HKI190836809
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/HKI190836809
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 0x075c4007599f4557f12418f0aa83ea557a98bc9d6b3b74979a6b0259533d6d37. 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/HKI190836809.
  date published: 2026-07-08T03:20:19Z
audio: Miniatures for piano trio: Set 1: No. 1. Minuet
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Miniatures for piano trio: Set 1: No. 2. Gavotte
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duration: PT2M21S
duration ms: 141106
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by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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additional property: CopyrightID
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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
  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
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  date published: 2026-07-31T09:50:11Z
audio: Miniatures for piano trio: Set 1: No. 2. Gavotte
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Miniatures for piano trio: Set 1: No. 3. Allegretto
type: MusicRecording
duration: PT1M17S
duration ms: 77640
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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  date published: 2009-02-24
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additional property: OTSHash
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/HKI190836811
additional property: OTSTimestamp
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86985d6eed54701563d6bb26ec6d61711c12c79bca330b3291e181cf626bf029. 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/HKI190836811.
  date published: 2026-07-08T03:20:19Z
audio: Miniatures for piano trio: Set 1: No. 3. Allegretto
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Miniatures for piano trio: Set 2: No. 4. Romance
type: MusicRecording
duration: PT4M30S
duration ms: 270173
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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  date published: 2009-02-24
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:48:59Z
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5753ead25854fb0db922ff786414f42a0815fd2783d96de20b6bfeda0051d069. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/HKI190836812.
  date published: 2026-07-29T22:48:59Z
audio: Miniatures for piano trio: Set 2: No. 4. Romance
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Miniatures for piano trio: Set 2: No. 5. Intermezzo
type: MusicRecording
duration: PT1M43S
duration ms: 103160
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
  type: MusicAlbum
  date published: 2009-02-24
isrc code: HKI190836813
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
  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccae22e9b3fe244257228366a85f45e5752ccbf021123302db34446f8b0d6d41. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/HKI190836813.
  date published: 2026-08-01T00:40:43Z
audio: Miniatures for piano trio: Set 2: No. 5. Intermezzo
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Miniatures for piano trio: Set 2: No. 6. Saltarello
type: MusicRecording
duration: PT2M15S
duration ms: 135760
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
  type: MusicAlbum
  date published: 2009-02-24
isrc code: HKI190836814
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
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b77e1a86a0c0e7986d4251ccbe0b46ced9f9254ab28559cc4ca3f02915a23. 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/HKI190836814.
  date published: 2026-07-02T03:55:08Z
audio: Miniatures for piano trio: Set 2: No. 6. Saltarello
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Miniatures for piano trio: Set 3: No. 7. Valse russe
type: MusicRecording
duration: PT3M21S
duration ms: 201480
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
  type: MusicAlbum
  date published: 2009-02-24
isrc code: HKI190836815
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
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28518c7d210641acdd9b8d29484741968d848a3d7154d16ff4dea0b5ae20d61. 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/HKI190836815.
  date published: 2026-07-08T03:20:19Z
audio: Miniatures for piano trio: Set 3: No. 7. Valse russe
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Miniatures for piano trio: Set 3: No. 8. Hornpipe
type: MusicRecording
duration: PT2M50S
duration ms: 170573
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
  type: MusicAlbum
  date published: 2009-02-24
isrc code: HKI190836816
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: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180cbc73f1ac1845f1a0bb38d93f50c4e2d9950c991feab982e0f23825dcedfa. 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/HKI190836816.
  date published: 2026-07-08T03:22:41Z
audio: Miniatures for piano trio: Set 3: No. 8. Hornpipe
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  additional property: Mode (Major/Minor)
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  additional property: Loudness (dB)
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Miniatures for piano trio: Set 3: No. 9. Marche militaire
type: MusicRecording
duration: PT3M6S
duration ms: 186946
explicit: false
by artist: Frank Bridge
by artist: Jack Liebeck
by artist: Alexander Chaushian
by artist: Ashley Wass
in album: Bridge, F.: Piano Trios Nos. 1 and 2 / Miniatures for Piano Trio
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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