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 0x862fd18c03146e2be3064f25df8414102c0eb74bf157b22b30052cacd91a4a01. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1944ef02-b43a-4114-b746-1c47dfe51539.json and https://artists.proofprofile.net/proofs/artist/1944ef02-b43a-4114-b746-1c47dfe51539.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x7218b0ef16778ff05b1bb5ce3c4586da743bb96382e97a2c26ba490b6400dc43. 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/ITD542301664.
Violin Sonata in G Major, K. 301/293a: I. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1b0cd60bc4f7e7eddff8bec656eb14b6d5df71db81f0f5cb5e390f20fea126. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITD542301666.
Violin Sonata in G Major, K. 301/293a: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a2e594c7b981b4c6e06839e920039fb9153cb32ebcf16fbb504a4744d80e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITD542301667.
Così fan tutte, K. 588, Act I: "Un'aura amorosa"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7128d6c49af37c863ec655551ff4b0a06ee98d629108f3f8d8920cb4f6fef249. 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/ITD542301670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2834f1e301b80a7c8ab5f3b86d5780fbc59149e4d3c1c22450689f5b6864bd8e. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ITD542301661.
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
Don Giovanni, K. 527, Act I: "Dalla sua pace"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22febb45f29ef60dee6b40a915f4b3bfc345184f3142ae33267edd7cd65b82b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD542301662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9026b132a26025c55da695de8fb5d37c8da80704c83cda6e2bc480c464f9f3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD542301665.
Idomeneo, K. 366, Act II: "Fuor del mar"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5506ac154f0525c4275fab91300c602d4d9929dcb74618ce214a6592b95bd42. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD542301668.
Don Giovanni, K. 527: "Il mio tesoro intanto"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233b61d13359e41965b1566901ecdebaf99de4314ff88ce148581806bfdcef84. 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/ITD542200947.
Misero! o sogno, K. 431 - Aura, che intorno spiri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f1e366bb0b95cad0b16480c41c23e240380556e9662eba4f8e497c5bc065ae. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITD542200949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf421a86f118264264fead788afb6163f49322e548774ed62ec0e57c99fc6f5a. 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/ITD542200953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d839673e3ddc914771f9f888c9ac41e5e94e4cfc3bb477a2c37c7b4e0208129. 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/ITD542200954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a6afe908650f6c7bce10bb7d27d11cb3164df28f641db4e580c48c5e94d839. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ITD542200948.
L'Elisir d'Amore, A 36: "Una furtiva lagrima"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f90b77bf466c6c29377fa44afd071f556d1163cbec46cea97cfeda0b418f5d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ITD542200950.
La Traviata: "De' miei bollenti spiriti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586688b6c4d4ff13e5d481d33452ce8fb06647705118365fbf0f26413b1aedcd. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITD542200951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4bd47de40a78529d26aa636cb4d1efe715ef98a5ecd0f5c44f4bf911bbacff. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ITD542200952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bb1ff648de336029bba1f5d4661e4fe153cf6635807871448c37da535299d7. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ITD542200955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb252d8b3981b4746bf91c20a5ddfbb2542200fbb779ee567c9965113de61e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITD542200956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098a177b6c10f3b8471e645925c94ee67ccc06bdbf1528ce03c6dbd332ee9e45. 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/ITD542200675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d6ede4fee79b9efe7d6b9f431770cf8f79365f6ef0ce2b7d2125a10cbbf1ba. 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/ITD542200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45103e6da3d3a2585763cc7da79325feba3f2d3750bfc6f34ebdf113986e570. 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/ITD542200677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd209f9f55e545e943eeb5c28245c7fa05a8cff56a66aa121f9197907c43cec7. 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/ITD542200680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5424d3e48401ea522719da1f0a48fb8dfbdf6cc1f6a53665c2be19ebc76006. 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/ITD542200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3325301dfe62c392c3deba3d09f14a22a078a9b31b84e3c46e074bd3860b1a. 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/ITD542200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5c9a150d5a80c009c8781a4cd5630d3c75818852f3a19a58285c083b4c2ff7. 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/ITD542200685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80add33062a8fb68df8a6a36c7dd7da1a4c08d75e02f4a9c3dac1d8e1cd8e06. 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/ITD542200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319429d685fccb07887c8f3648486d8ebbe2c190137a45c39f369c7923707d23. 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/ITD542200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df9c134751a371cccb2e9b077d468e5ecb7a8ec77ca820934ec42d2b327cb54. 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/ITD542200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff11f10dc705d8c187272783e4374a4410a47890f2b0b0ef350f55a1cc78479. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ITD542200674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445f35f8e2890202071242bfe5ee162a517d18626a8c240a589164a1aeda2eb2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITD542200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f49c8a8ff31d210532e4171b57e285130aa2c0c282e444bf7b9bfb812a26864. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITD542200681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878251f831008d47eb7a4ebbd7b7510f9322016c2519032e2a98037c4918fa08. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITD542200692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7503a398cb8d34362f93adaa5620df820e6a0a4c1f882996b20a378689bcf6f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITD542200697.
30 Études progressives, Op. 46: No. 1 in C Major, Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eba2bfde56c0061cb50e7e100a42b7856e8bb57d2bfa85e0b10a0659b0bdc0. 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/ITD542200723.
30 Études progressives, Op. 46: No. 2 in G Major, Allegretto scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2da61a0c539d420b743a32de15e381bbb2536cf23b350b3352da80305c5b75e. 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/ITD542200724.
30 Études progressives, Op. 46: No. 18 in C Minor, Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a1b75728e7b32bde062a1fef52cbad076f013daf22798d8831074d8e29084. 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/ITD542200740.
30 Études progressives, Op. 46: No. 26 in C Minor, Allegro risoluto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb332b5d0356c08058d6c12a80a5bece9fed18f2951a9f1d06702d28cbaa499. 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/ITD542200748.
30 Études progressives, Op. 46: No. 11 in B Minor, Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f189b4f78bfeafff42c255b0079338147a186f5951af5b5ff1bf28b9792280d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:41:24Z), 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/ITD542200733.
30 Études progressives, Op. 46: No. 3 in A Minor, Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1b1ec7b283e5351dee9904f02317a52a335b35efab71d339f1cce3b7188a26. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITD542200725.
30 Études progressives, Op. 46: No. 4 in C Major, Allegro vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9589cd5e8188b79b45777ff83fffa7f1b1518410c32b541f271cbfcc907f5b21. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITD542200726.
30 Études progressives, Op. 46: No. 5 in C Minor, Allegretto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e8c1a0e3076d0f62711c3c3a0bb1e50b6567ec4122e1fdf138e7e615fde273. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITD542200727.
30 Études progressives, Op. 46: No. 6 in G Major, Allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236cf0813710c2a00e9e5893ee81616402d3bb05bafa5048f96aeb458d114854. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITD542200728.
30 Études progressives, Op. 46: No. 7 in E Minor, Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998725fd6d9a30883f861b0834fa18e2c4c518e40b0bec5827f051b282b3e7e. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ITD542200729.
30 Études progressives, Op. 46: No. 8 in D Major, Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3f34732e4eb995ca49a8fd0ed63183fd1e34a79a487cb28219cd16b1d36b50. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/ITD542200730.
30 Études progressives, Op. 46: No. 12 in D Major, Allegro veloce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771f11f863c33e82007038a1334488c062a38339bae86ce35635fcd247229104. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ITD542200734.
Chopin: Études Op. 10 & Trois Nouvelles Études
Études, Op. 10: No. 2 in A Minor, Chromatique
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Études, Op. 10: No. 1 in C Major, Waterfall
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Études, Op. 10: No. 3 in E Major, Tristesse
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Études, Op. 10: No. 6 in E-Flat Minor, Lament
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Aloise Vecchiato: Piano works - Luca Rasca
Cosimo Panozzo presents Aloise Vecchiato Complete Songs
Turandot, SC 91: "Nessun Dorma (Vincerò)"
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Études d'exécution transcendante, S.139: No. 10, Allegro agitato molto
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Clementi: Gradus ad Parnassum op. 44 (Complete Edition)