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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9d890a2b2fc78fe77cba63d6d862876cda6eedf49303f3ae26160867087963. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40f0689a-a4ab-44c7-8f32-0f2d6a4e38bc.json and https://artists.proofprofile.net/proofs/artist/40f0689a-a4ab-44c7-8f32-0f2d6a4e38bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tchaikovsky: Piano Concertos Nos. 1 & 3 - Scriabin: Piano Concerto in F-Sharp Minor
Granados: Goyescas, valses poéticos, Allegro de concierto & Zapateado
Goyescas, Op. 11, Book II: IV. Quejas, ó La maja y el ruiseñor
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf71674d86b2e5d42bbe8b688af5fe6b2b48fbc2e57442aef5d3bbcf5485717d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1800804.
Ginastera: Piano Concerto No. 2, Panambí
Tchaikovsky: Piano Concerto No. 2 & Khachaturian Piano Concerto
Rachmaninoff: Piano Sonatas Nos. 1, 2 & Preludes
Barber, Copland, Gershwin: Piano Concertos
Schumann: Piano Quintet - Piano Quartet - Märchenerzählungen
Rachmaninoff: Moments musicaux & Etudes-tableaux
Moments Musicaux, Op. 16: No. 1 in B-Flat Minor. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a0357751c1af82d5236ffe0910368fa4e546ba9c3ab75069db49f4fda6054. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1203701.
Moments Musicaux, Op. 16: No. 3 in B Minor. Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf489e689926400dc7d91ef7cfc0dd7639ccba15c8f9934a2c25b5f7c9a9f40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1203703.
Moments Musicaux, Op. 16: No. 4 in E Minor. Presto - Più vivo - Prestissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76b8859c03b96dddc6f81df1c112ee0ebc050c1ee2d3af5b6369eeb865a1c2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1203704.
Moments Musicaux, Op. 16: No. 6 in C Major. Maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ece0c780f1e89e2c68cd6e32594c131818a5170559b4311b0f031e3a1dc3e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1203706.
Ginastera: Piano Concerto No. 2, Op. 39: IV. Finale. Prestissimo
Rarieties of Piano Music at "Schloss vor Husum" from the 2019 Festival (Live)