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  track: Suite bergamasque, CD 82: III. Clair de lune
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  track: Maple Leaf Rag
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track: Merry Christmas Mr. Lawrence (Arr. for Piano)
track: 12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 7

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OpenTimestamps Proof of Existence
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Children's Corner, CD 119: I. Doctor Gradus ad Parnassum
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subject of: OpenTimestamps Proof of Existence
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24 Préludes, Op. 28: No. 15 in D Flat Major. Sostenuto "Raindrop"
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subject of: OpenTimestamps Proof of Existence
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": I. Allegro
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subject of: OpenTimestamps Proof of Existence
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Sonatina No. 1 in C Major, Op. 36: II. Andante
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subject of: OpenTimestamps Proof of Existence
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The School of Velocity, Op. 299: No. 1 in C Major. Presto
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subject of: OpenTimestamps Proof of Existence
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6 Pieces for Piano, Vol. 2: No. 4, La valse d'Amélie
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subject of: OpenTimestamps Proof of Existence
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Rêverie, CD 76
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subject of: OpenTimestamps Proof of Existence
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6 Moments musicaux, Op. 94, D. 780: No. 3 in F Minor. Allegro moderato
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by artist: Franz Schubert
by artist: Lang Lang
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d3bbd8c7e8d3cbcf8352ba399e80cd4082a0ca558ba0063e38d896f4577f12. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ljl3b7SKCG1W8h8XpQE8h.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0ljl3b7SKCG1W8h8XpQE8h.
  date published: 2026-06-13T17:25:41Z
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Lyric Pieces, Op. 43: No. 6, To Spring
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by artist: Lang Lang
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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Album für die Jugend, Op. 68 / Pt. 1: Für Kleinere: No. 8, Wilder Reiter
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by artist: Lang Lang
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a58df7c1240363c5c23d60cb92f549fdb6580d8612dea5ad2f044a8b22bda2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7yQncCbmVIUYC3l9gpvOZF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7yQncCbmVIUYC3l9gpvOZF.
  date published: 2026-06-13T17:25:41Z
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Villageoises, FP 65: No. 2, Staccato
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by artist: Lang Lang
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67a348cf9629f635eb61ada7caf70f1dc5ee43e4bd8e9b53ec1479471a7fb9e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6xzy2Q8tdHQFRUqsFsQBKF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6xzy2Q8tdHQFRUqsFsQBKF.
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The Merry Shepherd Boy
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by artist: Lang Lang
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T13:32:09Z
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Merry Christmas Mr. Lawrence (Arr. for Piano)
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by artist: Lang Lang
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T17:25:41Z
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The Maiden's Prayer, Op. 4
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T17:25:41Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Tema "Twinkle, Twinkle, Little Star"
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duration: PT0M35S
duration ms: 35720
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801951
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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  value: https://explorer.copyrightchains.com/tx/0x1f52b7c5121fea7512d5b46f98f0ac6b8fc23ba33d38ac698e576ad1cc8e651a
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/track/3jKhFXNwPOyAD0WrQGmRAJ.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3jKhFXNwPOyAD0WrQGmRAJ
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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52b7c5121fea7512d5b46f98f0ac6b8fc23ba33d38ac698e576ad1cc8e651a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3jKhFXNwPOyAD0WrQGmRAJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3jKhFXNwPOyAD0WrQGmRAJ.
  date published: 2026-06-13T15:41:10Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 1
type: MusicRecording
duration: PT0M31S
duration ms: 31493
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801952
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: 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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e836a2e9e6dbdfa03aa13345feae6a80a143d0d4c25d268494c0f81947d62. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ESuJaKignCDNOFqtELl5p.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3ESuJaKignCDNOFqtELl5p.
  date published: 2026-06-13T17:25:41Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 2
type: MusicRecording
duration: PT0M32S
duration ms: 32133
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961801953
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T12:49:19+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x2c4bb165158b83a669b337c6cced57121498fd6a17cac653eb32e4e7eb0e36d2
additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4bb165158b83a669b337c6cced57121498fd6a17cac653eb32e4e7eb0e36d2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5RetsQzjYJaReVDa4I8lKf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5RetsQzjYJaReVDa4I8lKf.
  date published: 2026-06-13T12:53:06Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 3
type: MusicRecording
duration: PT0M35S
duration ms: 35826
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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  date published: 2019-03-29
isrc code: DEN961801954
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: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/01krwPhJ04YilFViTRPU1O
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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140fe501f965c6507693bb9679bb5fc97de749b3d05f2597331ecc68385add2f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/01krwPhJ04YilFViTRPU1O.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/01krwPhJ04YilFViTRPU1O.
  date published: 2026-06-13T13:32:09Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 4
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duration: PT0M34S
duration ms: 34186
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801955
additional property: CopyrightID
additional property: CopyrightStatus
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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
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71cd373e7e4a6add4103eb8bdc1c2b5ade78dc06083bbff82dff368e4433067. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ir1OyDVCLBFXePjhiIFEK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4ir1OyDVCLBFXePjhiIFEK.
  date published: 2026-06-13T12:53:06Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 5
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duration: PT0M33S
duration ms: 33346
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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  date published: 2019-03-29
isrc code: DEN961801956
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xfdbb0a9eddf99edff2af2055f85bf18e01626b7ef09ec1ae8c884dea0a22d2bc
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5esIz9qrMWBw6aF6Xi3kUl
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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbb0a9eddf99edff2af2055f85bf18e01626b7ef09ec1ae8c884dea0a22d2bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5esIz9qrMWBw6aF6Xi3kUl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5esIz9qrMWBw6aF6Xi3kUl.
  date published: 2026-06-13T17:25:41Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 6
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duration: PT0M30S
duration ms: 30026
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801957
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5d3b8dc4f27eee827c1b7e217483f40a9ab7dc39e820c29943b06a29baf54ea7
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T15:41:10Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 7
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duration: PT0M33S
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explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ff99b492ac1904d83aa65c26598d18657155e165afd79ae94870727c310d4e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0y646OrSYbBZ202ScoCbAL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0y646OrSYbBZ202ScoCbAL.
  date published: 2026-06-13T15:41:10Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 8
type: MusicRecording
duration: PT0M44S
duration ms: 44026
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801959
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90662109f79b0026073123eefa2ce25deef23a30843d054dfac7cc26e74df92f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4V0Pv49EC5GSSHC6YTrX6Z.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4V0Pv49EC5GSSHC6YTrX6Z.
  date published: 2026-06-13T17:25:41Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 9
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duration: PT0M35S
duration ms: 35160
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801960
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T17:25:41Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 10
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duration: PT0M32S
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explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
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isrc code: DEN961801961
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
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
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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 0x62651285a492bf61443f64afee8702474d622b0ec514c57010f59f052d924abd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2aqRcdA9KFZWb6RjKP4hZk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2aqRcdA9KFZWb6RjKP4hZk.
  date published: 2026-06-13T17:25:41Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 11
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by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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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
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d1188c378bdeb64bf57ac0baffbee6ae42660a4fa60805e955d950c6fc373f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2bCWsCuXFfF7tdYttqqcfI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2bCWsCuXFfF7tdYttqqcfI.
  date published: 2026-06-13T13:32:09Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 12
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by artist: Lang Lang
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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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
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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Minuet No. 1 in G Major (Formerly Attrib. J.S. Bach as BWV Anh. 114)
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by artist: Christian Petzold
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in album: Piano Book (Deluxe Edition)
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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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
  type: PropertyValue
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
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Wild Swans Suite: II. Eliza Aria (Arr. for Piano)
type: MusicRecording
duration: PT3M10S
duration ms: 190626
explicit: false
by artist: Elena Kats-Chernin
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961801980
additional property: CopyrightID
additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa9fa67aa5a5cdc72659f75de3991c7911aceb14e7e551d4af4db7ef019d3ff8b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1eaETfQqYI5YBDq5zj7O5Y.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1eaETfQqYI5YBDq5zj7O5Y
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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fa67aa5a5cdc72659f75de3991c7911aceb14e7e551d4af4db7ef019d3ff8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1eaETfQqYI5YBDq5zj7O5Y.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1eaETfQqYI5YBDq5zj7O5Y.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0xa9fa67aa5a5cdc72659f75de3991c7911aceb14e7e551d4af4db7ef019d3ff8b","isrc":"DEN961801980","name":"Wild Swans Suite: II. Eliza Aria (Arr. for Piano)","registered_at":"2026-06-08T02:12:20Z","spotify_id":"1eaETfQqYI5YBDq5zj7O5Y","type":"track"}

The Celebrated Chop Waltz "Chopsticks"
type: MusicRecording
duration: PT2M9S
duration ms: 129666
explicit: false
by artist: Arthur de Lulli
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961802020
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0aae3f5f36c6163f0e5d87b092afc2cb145db510f9f81b2b162a449eedb074d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/46J1vycWdEZPkSbWUdwMZQ.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/46J1vycWdEZPkSbWUdwMZQ
additional property: OTSTimestamp
  type: PropertyValue
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aae3f5f36c6163f0e5d87b092afc2cb145db510f9f81b2b162a449eedb074d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/46J1vycWdEZPkSbWUdwMZQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/46J1vycWdEZPkSbWUdwMZQ.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xd0aae3f5f36c6163f0e5d87b092afc2cb145db510f9f81b2b162a449eedb074d","isrc":"DEN961802020","name":"The Celebrated Chop Waltz \"Chopsticks\"","registered_at":"2026-06-07T19:04:41Z","spotify_id":"46J1vycWdEZPkSbWUdwMZQ","type":"track"}

Jasmine Flower (Arr. Schindler for Piano)
type: MusicRecording
duration: PT6M44S
duration ms: 404426
explicit: false
by artist: Traditional
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961801990
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T02:21:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaec3945587161e4b0f6d5e6a091c6317d30c9adbc4869ed293f42262e6876818
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6PRXA2dTMiNRVgfUQCax42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6PRXA2dTMiNRVgfUQCax42
additional property: OTSTimestamp
  type: PropertyValue
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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. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec3945587161e4b0f6d5e6a091c6317d30c9adbc4869ed293f42262e6876818. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6PRXA2dTMiNRVgfUQCax42.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6PRXA2dTMiNRVgfUQCax42.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xaec3945587161e4b0f6d5e6a091c6317d30c9adbc4869ed293f42262e6876818","isrc":"DEN961801990","name":"Jasmine Flower (Arr. Schindler for Piano)","registered_at":"2026-06-08T02:21:22Z","spotify_id":"6PRXA2dTMiNRVgfUQCax42","type":"track"}

Danzas Argentinas, Op. 2: II. Danza de la moza donosa
type: MusicRecording
duration: PT4M0S
duration ms: 240466
explicit: false
by artist: Alberto Ginastera
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961802130
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T11:17:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfdec1c9da75c50f319ffd054849014276b940f7cd38d7b4980279663ac974cb5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2LKki4a7k6nXsilf5eVPnf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2LKki4a7k6nXsilf5eVPnf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0xfdec1c9da75c50f319ffd054849014276b940f7cd38d7b4980279663ac974cb5","isrc":"DEN961802130","name":"Danzas Argentinas, Op. 2: II. Danza de la moza donosa","registered_at":"2026-06-08T11:17:46Z","spotify_id":"2LKki4a7k6nXsilf5eVPnf","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec1c9da75c50f319ffd054849014276b940f7cd38d7b4980279663ac974cb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2LKki4a7k6nXsilf5eVPnf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2LKki4a7k6nXsilf5eVPnf.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xfdec1c9da75c50f319ffd054849014276b940f7cd38d7b4980279663ac974cb5","isrc":"DEN961802130","name":"Danzas Argentinas, Op. 2: II. Danza de la moza donosa","registered_at":"2026-06-08T11:17:46Z","spotify_id":"2LKki4a7k6nXsilf5eVPnf","type":"track"}

Limu, limu, lima (Arr. Schindler for Piano)
type: MusicRecording
duration: PT5M35S
duration ms: 335360
explicit: false
by artist: Traditional
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961802140
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T10:22:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5cb1020919974867cae3d6c3a34ee86b25580d6c6b3918315b81c653a9038fe1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1ZpnptUG5sISwRx6fJQrXN.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ZpnptUG5sISwRx6fJQrXN
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5cb1020919974867cae3d6c3a34ee86b25580d6c6b3918315b81c653a9038fe1","isrc":"DEN961802140","name":"Limu, limu, lima (Arr. Schindler for Piano)","registered_at":"2026-06-04T10:22:49Z","spotify_id":"1ZpnptUG5sISwRx6fJQrXN","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1020919974867cae3d6c3a34ee86b25580d6c6b3918315b81c653a9038fe1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ZpnptUG5sISwRx6fJQrXN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ZpnptUG5sISwRx6fJQrXN.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x5cb1020919974867cae3d6c3a34ee86b25580d6c6b3918315b81c653a9038fe1","isrc":"DEN961802140","name":"Limu, limu, lima (Arr. Schindler for Piano)","registered_at":"2026-06-04T10:22:49Z","spotify_id":"1ZpnptUG5sISwRx6fJQrXN","type":"track"}

Variations on an Original Theme, Op. 36 "Enigma": No. 9, Nimrod (Version for Piano)
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duration: PT4M18S
duration ms: 258665
explicit: false
by artist: Edward Elgar
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961802230
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T06:37:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x851c0de4f18b8457ccab8acd3202a6df7b86a04b1f0f28d6de5182695b0a65a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/0P8VOd3hTA5bEtuDKfQWXr.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0P8VOd3hTA5bEtuDKfQWXr
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x851c0de4f18b8457ccab8acd3202a6df7b86a04b1f0f28d6de5182695b0a65a4","isrc":"DEN961802230","name":"Variations on an Original Theme, Op. 36 \"Enigma\": No. 9, Nimrod (Version for Piano)","registered_at":"2026-06-09T06:37:58Z","spotify_id":"0P8VOd3hTA5bEtuDKfQWXr","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c0de4f18b8457ccab8acd3202a6df7b86a04b1f0f28d6de5182695b0a65a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0P8VOd3hTA5bEtuDKfQWXr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0P8VOd3hTA5bEtuDKfQWXr.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x851c0de4f18b8457ccab8acd3202a6df7b86a04b1f0f28d6de5182695b0a65a4","isrc":"DEN961802230","name":"Variations on an Original Theme, Op. 36 \"Enigma\": No. 9, Nimrod (Version for Piano)","registered_at":"2026-06-09T06:37:58Z","spotify_id":"0P8VOd3hTA5bEtuDKfQWXr","type":"track"}

Arirang (Arr. Schindler for Piano)
type: MusicRecording
duration: PT3M59S
duration ms: 239986
explicit: false
by artist: Traditional
by artist: Lang Lang
in album: Piano Book (Deluxe Edition)
  type: MusicAlbum
  date published: 2019-03-29
isrc code: DEN961802120
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d9b5bc07a6fb685f839ea0ade09267137677080bb22f610d72c2d2d69749873
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5bNf7lZlkuL6U2C31xt9F9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5bNf7lZlkuL6U2C31xt9F9
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d9b5bc07a6fb685f839ea0ade09267137677080bb22f610d72c2d2d69749873","isrc":"DEN961802120","name":"Arirang (Arr. Schindler for Piano)","registered_at":"2026-06-08T19:03:41Z","spotify_id":"5bNf7lZlkuL6U2C31xt9F9","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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Maple Leaf Rag
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Leoncavallo: La Nuit de mai - Opera Arias & Songs
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track: Valse mignonne
track: Pagliacci / Act 1: Intermezzo

Lang Lang
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Leoncavallo: La Nuit de mai - Opera Arias & Songs
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Valse mignonne
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Pagliacci / Act 1: Intermezzo
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Dos Oruguitas [aus "Encanto" (Feat. Sebastián Yatra)]
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The Disney Book
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track: Wenn ein Stern in finst'rer Nacht - aus "Pinocchio" / Englische Version (Feat. Gina Alice)
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track: In Deiner Welt - aus "Aladdin"
track: Dir gehört mein Herz - aus "Tarzan" / Italienische Version (Feat. Andrea Bocelli)

In Deiner Welt - aus "Aladdin"
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Dir gehört mein Herz - aus "Tarzan" / Italienische Version (Feat. Andrea Bocelli)
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Beethoven: Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
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Rachmaninov: Piano Concerto No.2; Rhapsody on a Theme of Paganini; Prelude op.23
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  subject of: OpenTimestamps Proof of Existence
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The Well-Tempered Clavier, Book 1, BWV 846-869 / Prelude & Fugue in C Major, BWV 846: I. Prelude
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subject of: OpenTimestamps Proof of Existence
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": I. Allegro
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subject of: OpenTimestamps Proof of Existence
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Für Elise, Bagatelle in A Minor, WoO 59
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The Departure
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subject of: OpenTimestamps Proof of Existence
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Limu, limu, lima (Arr. Schindler for Piano)
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb1020919974867cae3d6c3a34ee86b25580d6c6b3918315b81c653a9038fe1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ZpnptUG5sISwRx6fJQrXN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ZpnptUG5sISwRx6fJQrXN.
  date published: 2026-06-13T15:41:10Z
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24 Préludes, Op. 28: No. 15 in D Flat Major. Sostenuto "Raindrop"
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by artist: Lang Lang
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77713ce368e96bcd3977b1d7cdef981428a06a55b34b79404831fdf6220fce9b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rI95bUx4nmUEqWYLg6q4a.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6rI95bUx4nmUEqWYLg6q4a.
  date published: 2026-06-13T12:47:07Z
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Rêverie, CD 76
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by artist: Lang Lang
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-06-13T12:47:07Z
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Für Elise, Bagatelle in A Minor, WoO 59
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-06-13T15:41:10Z
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Suite bergamasque, CD 82: III. Clair de lune
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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The Departure
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-06-13T12:47:07Z
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Tema "Twinkle, Twinkle, Little Star"
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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The School of Velocity, Op. 299: No. 1 in C Major. Presto
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subject of: OpenTimestamps Proof of Existence
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Album für die Jugend, Op. 68 / Pt. 1: Für Kleinere: No. 8, Wilder Reiter
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subject of: OpenTimestamps Proof of Existence
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Lieder ohne Worte, Op. 67: No. 4 in C Major. Presto "Spinning Song"
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subject of: OpenTimestamps Proof of Existence
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Children's Corner, CD 119: I. Doctor Gradus ad Parnassum
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subject of: OpenTimestamps Proof of Existence
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Rhapsody on a Theme of Paganini, Op. 43: Variation No. 18 - Live
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subject of: OpenTimestamps Proof of Existence
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Sonatina No. 1 in C Major, Op. 36: II. Andante
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subject of: OpenTimestamps Proof of Existence
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6 Pieces for Piano, Vol. 2: No. 4, La valse d'Amélie
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Merry Christmas Mr. Lawrence (Arr. for Piano)
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 7
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by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
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  date published: 2019-03-29
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