1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1cb0543d328cb5c5f847780f3f5b412a4599f60b9109a0c7a6568af6d7afd6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3498919a-058b-4bd8-8cc8-71c2ca8098f6.json and https://artists.proofprofile.net/proofs/artist/3498919a-058b-4bd8-8cc8-71c2ca8098f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tchaikovsky: Piano Concerto No.1; Prokofiev: Piano Concerto No.3
Piano Concerto No. 3 in C, Op. 26: 1. Andante - Allegro
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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b92c5cf2bfcd24bcd6ffc89f2f2a318fbb10731eb7bbab93127d47f499d2bd9. 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/3QqPgzOcv9titKufFR0gsQ.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/3QqPgzOcv9titKufFR0gsQ.
Piano Concerto No. 3 in C, Op. 26: 2. Tema con variazione
Piano Concerto No. 3 in C, Op. 26: 3. Allegro ma non troppo
Swan Lake, Op. 20, TH.12 - Arr. for piano by Earl Wild: Dance Of The Four Swans - Pas de quatre
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cc33204e553722362464bbee645c5ffbe10b2a256e874e470032786550b693. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6vSGIy8ntNxEuQPjAdAFaV.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/6vSGIy8ntNxEuQPjAdAFaV.
Piano Concerto No. 1 In B Flat Minor, Op. 23, TH.55: 1. Allegro non troppo e molto maestoso - Allegro con spirito
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48da2a9c9a6a0b979fe929aea7ee97eb122532758f6b238655be9f4cde0d57dd. 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/3gkMtVE6792VMzSW6P2niZ.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/3gkMtVE6792VMzSW6P2niZ.
Piano Concerto No. 1 In B Flat Minor, Op. 23, TH.55: 2. Andantino semplice - Prestissimo - Tempo I
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29da023b9c8fc506aed23f01cecafea76bb23a92b0fd338d0c46aa695b51df49. 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/3zST4gdlffasfTLheiKRrF.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/3zST4gdlffasfTLheiKRrF.
Piano Concerto No. 1 In B Flat Minor, Op. 23, TH.55: 3. Allegro con fuoco
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ea04c9476b4a8a1241429a18b99265c936051ca426e622d5dcdd68817fef7. 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/1ODgqZhKdTjDIg2wtk36Jv.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/1ODgqZhKdTjDIg2wtk36Jv.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b92c5cf2bfcd24bcd6ffc89f2f2a318fbb10731eb7bbab93127d47f499d2bd9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3rKIzBOUxQVeAX0QhsEMxR.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/3rKIzBOUxQVeAX0QhsEMxR.
Rhapsody on a Theme of Paganini, Op. 43: Introduction - Allegro vivace - Variation I
Rachmaninoff in Lucerne - Rhapsody on a Theme of Paganini, Symphony No. 3
Rhapsody on a Theme of Paganini, Op. 43: Tema - L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: Variation II - L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: Variation III - L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: Variation IV - Più vivo
Rhapsody on a Theme of Paganini, Op. 43: Variation V - Tempo precedente
Rhapsody on a Theme of Paganini, Op. 43: Variation VI - L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: Variation VII - Meno mosso, a tempo moderato
Rhapsody on a Theme of Paganini, Op. 43: Variation VIII - Tempo I
Rhapsody on a Theme of Paganini, Op. 43: Variation IX - L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: Variation X - L'istesso tempo
Rhapsody on a Theme of Paganini, Op. 43: Variation XI - Moderato