Domingo Garcia Hindoyan (born in Caracas, 15 February 1980) is a Venezuelan- Swiss conductor and violinist. Biography Hindoyan is the son of Domingo Garcia, a Venezuelan violinist and former presiden
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f2955936b31afcbaf6b556f4636e54596e4753f6ff4b40a32e28f52f042a31. 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/384129a7-f39e-497f-87fb-23caa8f5b340.json and https://artists.proofprofile.net/proofs/artist/384129a7-f39e-497f-87fb-23caa8f5b340.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Rachmaninoff: Piano Concerto No. 3 — Tchaikovsky: The Nutcracker
Tchaikovsky: Souvenir de Florence & Symphony No. 6 ‘Pathetique’
Bruckner: Symphony No. 4 in E-Flat Major, WAB 104 "Romantic" (1878/80 Nowak 2nd Edition) [Live]
Variations on a Nursery Song, Op. 25: Introduction. Maestoso
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb500ab50a72acb8d601e29561c5cc0c28907e8b8af31ad6b5fb719c26cad7671. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300300 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Theme. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5622684a8693faece4e4628221844321833c459bbd50a27b402a38afaf946d90. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300301 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 1. Poco più mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa090aae570fe2164ad8df29bbce1bce8c9f44a2e86595e3eda5158c815b04004. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300302 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 2. Risoluto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3162a71f155bea34a040ce36a9bad8bb268deeed7c3c675c2c39f760f5cb2f5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300303 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 3. L'istesso tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efcc149f1d6b0bf73a771a407d687229c740be5f184dbfc8f70a216b86c8108. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300304 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 4. Molto meno mosso (Allegretto moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6794d020ff6da4604544733b5707e6bbde76ccd36711742da9642df8c067f14. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300305 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 5. Più mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d50eea3345631918ede06872ed5b3f002846dbe82c92aad792724da993566e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300306 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 6. Ancora più mosso (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0970f3a7aba067dac7a934937a69f218f3377594de87853af823ba44605e971f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300307 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 8. Alla marcia (Allegro moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0677f7c1d2ce90593477dc8da3f89ca4513d8bc4b63df8adb9967522084ec008. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300309 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 9. Presto - Andante rubato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e9f5b53dc56033adba3083697b8730f3935df235e83d228e01d0c3f0193d8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300310 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 10. Passacaglia (Adagio non troppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82000640d477b2eccdb5b5e7f9718332904643ad817c5f55a25fe1c8e247a59a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300311 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Var. 11. Choral (Maestoso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e2779719c8471f3ae335e16a9f9a7c79b635898ec80836a402ac5ec7137b5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300312 — a six-check JSON result.
Variations on a Nursery Song, Op. 25: Finale fugato. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad4abf7d970d914432baae60538ff0b1b93bf714c0c527dc7efe6ade1f6b5ad. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2300313 — a six-check JSON result.