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 0xdc711633320ebc49c072845095133445fb20dd2dd15206e2605f2c56c1a4df7d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49257ed8-e2aa-42e8-9d91-dcd7da9b80b4.json and https://artists.proofprofile.net/proofs/artist/49257ed8-e2aa-42e8-9d91-dcd7da9b80b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live from the Marlboro Music Festival - Ravel & Debussy
String Quartet in G Minor, Op. 10: I. Anime et tres decide
String Quartet in G Minor, Op. 10: II. Assez vif et bien rythme
String Quartet in G Minor, Op. 10: III. Andantino doucement expressif
String Quartet in G Minor, Op. 10: IV. Tres modere
String Quartet in F Major: I. Allegro moderato, tres doux
String Quartet in F Major: II. Assez vif, tres rhythme
String Quartet in F Major: III. Tres Lent
String Quartet in F Major: IV. Vif et agite
Hymn Medley:I'd Rather Have Jesus / The Love of God Is Greater Far / It Is Well
Capriccio sopra un tema della Niobe di Pacini (Caprice on a Theme from Pacini's Niobe), Op. 22
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 → block OTSBitcoinBlock must exist at that height 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 0x0dcc524c2585bf3279b1b5de632b4cc213950e100029849f271374040fa21bef. 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/HKI191030001.
12 Caprices, Op. 25: No. 1. Allegro quasi presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc6ee6ced76fbeee6f48968d531c08f2714dff905180f47ec7c98f5fdc1bfa0. 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/HKI191030002.
12 Caprices, Op. 25: No. 2. Andante religioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5a414b837ce59d7484956e90192529c49d69d8800c6ae9110395a892d3ab8f. 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/HKI191030004.
12 Caprices, Op. 25: No. 5. Allegro comodo
12 Caprices, Op. 25: No. 6. Adagio largamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba72db58378d20a964fa3dd3cf8cc8f4ad1fdf86e529a5df5ae5cf240a80336. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191030007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc5b9b14650925cf5e8dfdd29abb73ceb4b40804be19dab7db2dea99c6b0516. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191030008.
12 Caprices, Op. 25: No. 8. Moderato ma energico
12 Caprices, Op. 25: No. 10. Allegro deciso
12 Caprices, Op. 25: No. 11. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ef2c29f86f5b020443a177dc3e708eee6ec92b1f39a43b52eb4951c824a4a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191030012.
12 Caprices, Op. 25: No. 12. Allegretto capriccioso
3 Pieces for Piano: No. 1, Prelude. Diffluent
3 Pieces for Piano: No. 2, Postlude. Left
3 Pieces for Piano: No. 3, Interlude. Points & Lines