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description: Alexandre Rabinovitch-Barakovsky (; born 30 March 1945) is a Russian-born composer, conductor and classical pianist who lives in Switzerland. He is one of the first composers of minimalism (from 196
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album: Alexandre Rabinovitch-Barakovsky: «Terza Pratica II » Vol. 2
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Mozart / Arr. Grieg for Two Pianos: Piano Sonata No. 16 in C Major, K. 545 "Semplice": I. Allegro (Live)
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Alexandre Rabinovitch-Barakovsky: Anthology of Archaic Rituals - in Search of the Center
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Shostakovich: Concerto In C Minor For Piano, Trumpet And String Orchestra, Symphony No. 9
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Beethoven: 33 Variations on a Waltz by Anton Diabelli, Op. 120 - Brahms: Piano Sonata No. 3 in F Minor, Op. 5 (Live)
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Berlioz: Symphonie fantastique, Op. 14 - Schubert: Impromptu, Op. 90, No. 3 - Chopin: Fantaisie in F Minor, Op. 49
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Alexandre Rabinovitch-Barakovsky: «Terza Pratica II » Vol. 2
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Alexandre Rabinovitch-Barakovsky: «Terza Pratica II » Vol. 1
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Alexandre Rabinovitch-Barakovsky: «Terza Pratica» Vol. 4 (Live)
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Alexandre Rabinovitch-Barakovsky: «Terza Pratica» Vol. 3
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Sergio Tiempo plays Liszt and Tchaikovsky
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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Dukas: L'apprenti sorcier - Strauss: Sinfonia domestica - Ravel: La valse
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T16:07:00Z
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  subject of: OpenTimestamps Proof of Existence
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track: Mozart: Sonata for Piano 4-Hands in C Major, K. 521: I. Allegro

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

Mozart: Sonata for 2 Pianos in D Major, K. 448: III. Allegro molto
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Mozart: Sonata for Piano 4-Hands in C Major, K. 521: I. Allegro
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by artist: Alexandre Rabinovitch-Barakovsky
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Mozart: Pianos Concertos Nos 10, 19 & 20
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation I. Andante con moto
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  by artist: Martha Argerich
  by artist: Alexandre Rabinovitch-Barakovsky
  in album: Brahms: Haydn Variations, Op. 56b, Waltzes, Op. 39 & Sonata in F Minor, Op. 34b
    type: MusicAlbum
    date published: 1994-01-01
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
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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/DEA800115249
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb83b339e22d273ab416689c8cb8aa0a8d7537821f00b35b6356ea3099ca2f5. 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/DEA800115249.
    date published: 2026-07-08T03:22:41Z
  audio: Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation I. Andante con moto
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    additional property: Valence (Positivity)
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track: Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation V. Poco presto
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  by artist: Johannes Brahms
  by artist: Martha Argerich
  by artist: Alexandre Rabinovitch-Barakovsky
  in album: Brahms: Haydn Variations, Op. 56b, Waltzes, Op. 39 & Sonata in F Minor, Op. 34b
    type: MusicAlbum
    date published: 1994-01-01
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  isrc code: DEA800115253
  additional property: CopyrightID
  additional property: CopyrightStatus
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  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: Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation V. Poco presto
track: Brahms: Sonata for 2 Pianos in F Minor, Op. 34b: I. Allegro non troppo
track: Brahms: Sonata for 2 Pianos in F Minor, Op. 34b: III. Scherzo. Allegro
track: Brahms: 16 Waltzes, Op. 39: No. 1 in B Major (Version for 2 Pianos)
track: Brahms: 16 Waltzes, Op. 39: No. 2 in E Major (Version for 2 Pianos)
track: Brahms: 16 Waltzes, Op. 39: No. 3 in B Minor (Version for 2 Pianos)
track: Brahms: 16 Waltzes, Op. 39: No. 4 in G-Sharp Minor (Version for 2 Pianos)
track: Brahms: 16 Waltzes, Op. 39: No. 5 in A-Flat Major (Version for 2 Pianos)

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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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value: 957118

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

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115253

OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d84d6a10bed140e38af12cb45b7e96af1f693a1687f22f8a863559cbfa6d5e5. 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/DEA800115253.
date published: 2026-07-08T03:20:19Z

Brahms: Variations on a Theme by Haydn for 2 Pianos, Op. 56b "St. Antoni Chorale": Variation V. Poco presto
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Brahms: Sonata for 2 Pianos in F Minor, Op. 34b: I. Allegro non troppo
type: MusicRecording
duration: PT14M57S
duration ms: 897506
explicit: false
by artist: Johannes Brahms
by artist: Martha Argerich
by artist: Alexandre Rabinovich
in album: Brahms: Haydn Variations, Op. 56b, Waltzes, Op. 39 & Sonata in F Minor, Op. 34b
  type: MusicAlbum
  date published: 1994-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: DEA800115258
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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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/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115258
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2963af847efc4351a34b2d91ebd421460471c0c33c601f12a7150452a6249f83. 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/DEA800115258.
  date published: 2026-07-08T03:53:27Z
audio: Brahms: Sonata for 2 Pianos in F Minor, Op. 34b: I. Allegro non troppo
  type: AudioObject
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  additional property: Musical Key
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Brahms: Sonata for 2 Pianos in F Minor, Op. 34b: III. Scherzo. Allegro
type: MusicRecording
duration: PT7M3S
duration ms: 423293
explicit: false
by artist: Johannes Brahms
by artist: Martha Argerich
by artist: Alexandre Rabinovich
in album: Brahms: Haydn Variations, Op. 56b, Waltzes, Op. 39 & Sonata in F Minor, Op. 34b
  type: MusicAlbum
  date published: 1994-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: DEA800115260
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115260
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebaa21e0bed17b57441bb162df11544ca994637a64cf38facf163ccc8473024. 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/DEA800115260.
  date published: 2026-07-08T08:56:20Z
audio: Brahms: Sonata for 2 Pianos in F Minor, Op. 34b: III. Scherzo. Allegro
  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
    value: 5
  additional property: Danceability
    type: PropertyValue
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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
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Brahms: 16 Waltzes, Op. 39: No. 1 in B Major (Version for 2 Pianos)
type: MusicRecording
duration: PT0M52S
duration ms: 52733
explicit: false
by artist: Johannes Brahms
by artist: Martha Argerich
by artist: Alexandre Rabinovitch-Barakovsky
in album: Brahms: Haydn Variations, Op. 56b, Waltzes, Op. 39 & Sonata in F Minor, Op. 34b
  type: MusicAlbum
  date published: 1994-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: DEA800115262
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T04:11:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa940b5875e6ec3e19a0fc1d9d60939b1651e401bb107bda368edfe43c0157437
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115262
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa940b5875e6ec3e19a0fc1d9d60939b1651e401bb107bda368edfe43c0157437. 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/DEA800115262.
  date published: 2026-07-08T08:56:20Z
audio: Brahms: 16 Waltzes, Op. 39: No. 1 in B Major (Version for 2 Pianos)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Acousticness
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Brahms: 16 Waltzes, Op. 39: No. 2 in E Major (Version for 2 Pianos)
type: MusicRecording
duration: PT1M40S
duration ms: 100133
explicit: false
by artist: Johannes Brahms
by artist: Martha Argerich
by artist: Alexandre Rabinovitch-Barakovsky
in album: Brahms: Haydn Variations, Op. 56b, Waltzes, Op. 39 & Sonata in F Minor, Op. 34b
  type: MusicAlbum
  date published: 1994-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: DEA800115263
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x406cdb2cf16fb55142b71f014ce78670c62d03dad20fbaced0fa3260bf4ecec0
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/DEA800115263
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406cdb2cf16fb55142b71f014ce78670c62d03dad20fbaced0fa3260bf4ecec0. 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/DEA800115263.
  date published: 2026-07-08T03:20:19Z
audio: Brahms: 16 Waltzes, Op. 39: No. 2 in E Major (Version for 2 Pianos)
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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by artist: Martha Argerich
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subject of: OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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by artist: Martha Argerich
by artist: Alexandre Rabinovitch-Barakovsky
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genre: classical
genre: german-romanticism
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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Brahms: 2 Piano Trios
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Messiaen: Visions de l'Amen
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Beethoven: Complete Variations with Cello
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date published: 1981

Walzer As-Dur
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subject of: OpenTimestamps Proof of Existence
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