Yulia Chaplina
type: MusicGroup
genre: classical piano
popularity: 12
followers: 120
additional property: CopyrightID
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: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06f371a1-2e08-4832-930a-b29d4ca5a423.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d96061cf9acc64d335e7c22d497c7a4eb915e9bc45031cb2e2ef8507ef8641f. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06f371a1-2e08-4832-930a-b29d4ca5a423.json and https://artists.proofprofile.net/proofs/artist/06f371a1-2e08-4832-930a-b29d4ca5a423.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T05:36:59Z
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album: Rachmaninov, Gubaidulina, Tchaikovsky, Scriabin
  type: MusicAlbum
  date published: 2014-05-01
track: A:15 Theme, Var. 1 and Var. 5 (from 12 Variations on "Ah vous dirai-je, maman", K. 265)
track: B:6 Andante
track: A:7 Allegro (1st movt from Sonata No. 6 in G)
track: A:9 Finale: Allegro molto (4th movt from Sonata in G, Hob. XVI:6)
track: A:5 Bagatelle in G minor, Op. 119 No. 1
track: A:6 Velocity
track: B:12 Impromptu in A flat (No. 2 from Four Impromptus, Op. 142, D. 935)
track: A:4 Allegro di molto (1st movt from Sonata in F minor, Wq. 63/6)
track: A:11 Gigue in G, K. 574
track: A:11 Allegro in C (No. 2 from Six pièces très faciles, Op. 52)
track: A:9 Moderato (1st movt from Sonata in E, Hob. XVI:31)
track: A:5 Allegro assai (1st movt from Sonatina in F, Anh. 5 No. 2)
track: A:12 Allegro scherzando in F
track: Allegro scherzando in F
track: A:13 Andante grazioso and Vars. 1–6 (1st movt from Sonata in A, K. 331)

A:15 Theme, Var. 1 and Var. 5 (from 12 Variations on "Ah vous dirai-je, maman", K. 265)
type: MusicRecording
duration: PT1M40S
duration ms: 100240
explicit: false
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 5
  type: MusicAlbum
  date published: 2024-06-06
popularity: 9
isrc code: GBEYQ2455215
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
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9617267168548423e611de59ae59ab866e133e440fcb7d39dc30c6ecc9619b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBEYQ2455215.
  date published: 2026-07-02T11:34:59Z
audio: A:15 Theme, Var. 1 and Var. 5 (from 12 Variations on "Ah vous dirai-je, maman", K. 265)
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    type: PropertyValue
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  additional property: Danceability
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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B:6 Andante
type: MusicRecording
duration: PT1M13S
duration ms: 73453
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: C. P. E. Bach
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 4
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  date published: 2024-06-06
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additional property: CopyrightStatus
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee3bbee2a6d3b9f9ab9351fb454a0d395536049c7385d1f063536cf8a3e033. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBEYQ2454522.
  date published: 2026-07-07T16:43:21Z
audio: B:6 Andante
  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
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  additional property: Energy
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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
    type: PropertyValue
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A:7 Allegro (1st movt from Sonata No. 6 in G)
type: MusicRecording
duration: PT1M50S
duration ms: 110160
explicit: false
by artist: Domenico Cimarosa
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 6
  type: MusicAlbum
  date published: 2024-06-06
genre: classical
genre: classical-piano
genre: requiem
isrc code: GBEYQ2456907
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2456907
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T15:12:44+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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e1864dcdc27196d62fa3a429236a78eed7246b6568adf2ab6d77e3dc1a46ee. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GBEYQ2456907.
  date published: 2026-07-07T15:15:30Z
audio: A:7 Allegro (1st movt from Sonata No. 6 in G)
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  additional property: Tempo (BPM)
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    type: PropertyValue
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  additional property: Danceability
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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)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Minor

A:9 Finale: Allegro molto (4th movt from Sonata in G, Hob. XVI:6)
type: MusicRecording
duration: PT1M46S
duration ms: 106333
explicit: false
by artist: Joseph Haydn
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 6
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  date published: 2024-06-06
isrc code: GBEYQ2456909
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
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05635dbf0d37d4c1c4a9454eaafe89033bed0b3e21e1e9d55961dade472671b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBEYQ2456909.
  date published: 2026-07-06T07:53:57Z
audio: A:9 Finale: Allegro molto (4th movt from Sonata in G, Hob. XVI:6)
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  additional property: Danceability
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  additional property: Speechiness
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A:5 Bagatelle in G minor, Op. 119 No. 1
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duration: PT2M7S
duration ms: 127453
explicit: false
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 5
  type: MusicAlbum
  date published: 2024-06-06
popularity: 10
subject of: OpenTimestamps Proof of Existence
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7fe0d026042c94254f306f0a17712c243b1bc5017ba61bbba489c54a57a814. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:26:24Z), 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/GBEYQ2455205.
  date published: 2026-07-22T10:26:24Z
audio: A:5 Bagatelle in G minor, Op. 119 No. 1
  type: AudioObject
  additional property: Tempo (BPM)
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    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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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: BitcoinTime
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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
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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

A:6 Velocity
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duration ms: 67400
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by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 6
  type: MusicAlbum
  date published: 2024-06-06
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T08:53:53Z
audio: A:6 Velocity
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additional property: ProofProfileEvidenceStatus
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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 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

B:12 Impromptu in A flat (No. 2 from Four Impromptus, Op. 142, D. 935)
type: MusicRecording
duration: PT4M42S
duration ms: 282746
explicit: false
by artist: Franz Schubert
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 8
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  date published: 2024-06-06
genre: classical
genre: classical-piano
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf22440aae263777d2e8f837a9508fde4cf26721c9c32b542bf66ddcf3566091. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:52:57Z), 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/GBEYQ2458328.
  date published: 2026-07-22T18:52:57Z
audio: B:12 Impromptu in A flat (No. 2 from Four Impromptus, Op. 142, D. 935)
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additional property: OTSBitcoinBlockVerifyURL
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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 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

A:4 Allegro di molto (1st movt from Sonata in F minor, Wq. 63/6)
type: MusicRecording
duration: PT2M15S
duration ms: 135946
explicit: false
by artist: C. P. E. Bach
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
  type: MusicAlbum
  date published: 2024-06-06
popularity: 16
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d0b9a490794d101ac4f71fd08fde4825efdae535b33a944dbaac44be0124bf. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBEYQ2457604.
  date published: 2026-07-30T00:39:11Z
audio: A:4 Allegro di molto (1st movt from Sonata in F minor, Wq. 63/6)
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  additional property: Musical Key
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  additional property: Danceability
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isrc code: GBEYQ2457604
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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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

A:11 Gigue in G, K. 574
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duration: PT1M0S
duration ms: 60680
explicit: false
by artist: Mozart
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
  type: MusicAlbum
  date published: 2024-06-06
popularity: 10
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dd99e52c02bbaeffe4abfe17710228fbe3f45ecf0d7b5b445c6886c7f2f060. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GBEYQ2457611.
  date published: 2026-07-30T08:04:30Z
audio: A:11 Gigue in G, K. 574
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Valence (Positivity)
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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A:11 Allegro in C (No. 2 from Six pièces très faciles, Op. 52)
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duration: PT2M33S
duration ms: 153226
explicit: false
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 5
  type: MusicAlbum
  date published: 2024-06-06
popularity: 7
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2475d2299ac9b6c3b46042a8dbdfdeb8a0b1ed16dc8c0c50e2a9a4570f0abc14. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBEYQ2455211.
  date published: 2026-07-29T12:35:17Z
audio: A:11 Allegro in C (No. 2 from Six pièces très faciles, Op. 52)
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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: Mode Name
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isrc code: GBEYQ2455211
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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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

A:9 Moderato (1st movt from Sonata in E, Hob. XVI:31)
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duration: PT3M57S
duration ms: 237493
explicit: false
by artist: Haydn
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
  type: MusicAlbum
  date published: 2024-06-06
popularity: 4
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71f9be80abfbda1c3e7765745a66743d77444c19beabefcdb6013d807ee6c3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBEYQ2457609.
  date published: 2026-07-30T14:36:16Z
audio: A:9 Moderato (1st movt from Sonata in E, Hob. XVI:31)
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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
    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: 0.531
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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isrc code: GBEYQ2457609
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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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

A:5 Allegro assai (1st movt from Sonatina in F, Anh. 5 No. 2)
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duration: PT1M55S
duration ms: 115680
explicit: false
by artist: Ludwig van Beethoven
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 4
  type: MusicAlbum
  date published: 2024-06-06
genre: classical
genre: classical-piano
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd132d5e3683f73b54dc056a2870f77cbff425ce86908f4670e89df048ac3b6eb. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBEYQ2454505.
  date published: 2026-07-29T15:38:18Z
audio: A:5 Allegro assai (1st movt from Sonatina in F, Anh. 5 No. 2)
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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
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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)
    type: PropertyValue
    value: 0.489
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBEYQ2454505
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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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

A:12 Allegro scherzando in F
type: MusicRecording
duration: PT0M56S
duration ms: 56253
explicit: false
by artist: Joseph Haydn
by artist: Haydn
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 4
  type: MusicAlbum
  date published: 2024-06-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779fc162f6351c23f105486693fc6af33b89cd8899c34b4654ed30c51896c90c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBEYQ2454512.
  date published: 2026-07-29T21:09:47Z
audio: A:12 Allegro scherzando in F
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.012
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.772
  additional property: Energy
    type: PropertyValue
    value: 0.152
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.865
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.962
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.21
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBEYQ2454512
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960144
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T21:09:47+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2454512
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47+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 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

Allegro scherzando in F
type: MusicRecording
duration: PT0M56S
duration ms: 56253
explicit: false
by artist: Joseph Haydn
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2021 & 2022, ABRSM Grade 4
  type: MusicAlbum
  date published: 2020-07-09
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daf59706d29de6e9435ca52f08282e09b1641d89d7e8fee3a4b01125f4d1066. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2030909.
  date published: 2026-07-31T12:24:41Z
audio: Allegro scherzando in F
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.012
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.772
  additional property: Energy
    type: PropertyValue
    value: 0.183
  additional property: Speechiness
    type: PropertyValue
    value: 0.072
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.863
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.464
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.21
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBEYQ2030909
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960397
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T12:24:41+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2030909
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: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41+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 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

A:13 Andante grazioso and Vars. 1–6 (1st movt from Sonata in A, K. 331)
type: MusicRecording
duration: PT6M56S
duration ms: 416706
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Mozart
by artist: Yulia Chaplina
in album: Piano Exam Pieces 2025 & 2026, ABRSM Grade 8
  type: MusicAlbum
  date published: 2024-06-06
genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30474a0aacfd8822b184cd959d0b741fc10362c8a870b2eb1667f63191263789. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2458313.
  date published: 2026-07-29T19:35:34Z
audio: A:13 Andante grazioso and Vars. 1–6 (1st movt from Sonata in A, K. 331)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.205
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.402
  additional property: Energy
    type: PropertyValue
    value: 0.052
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.91
  additional property: Liveness
    type: PropertyValue
    value: 0.053
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.394
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.591
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBEYQ2458313
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960138
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2458313
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34+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 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