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 0x9447cc21bba950a9e2a2c054b9f0aa7fd7bcb7b6f1835c9eab63604c9cff3c3f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16474731-0250-41e0-abf2-c46da08cc9c0.json and https://artists.proofprofile.net/proofs/artist/16474731-0250-41e0-abf2-c46da08cc9c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sinfonia per la mandala in D Minor: II. Largo
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 0x510cf7e4ec5472aa32f8f4ac7f3e532194770055e629514e4c8983ddd9499703. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW1570405.
Sinfonia per la mandala in D Minor: V. Giga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63acbcd0b80ddcb55b2e6d3761b77b29fdc5ff7b5fa4c245eee4dbd2521b1a93. 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/QM4TW1570408.
Sonata per l’armandolino in G Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7004e61aef17b57005e6d19893db3b0f0944f2b65c9999aefce3685a5d189c. 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/QM4TW1570410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b59a1339042a763a9ea59c3e43d88591745eca540db009ece925ddb3c50f423. 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/QM4TW1570419.
Sonata a Mandolino Solo e basso in D Major: II. Larghetto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0226664577a4cb94467bdce8e12f5135cf9c1ac02ec66a833ce388d9714fe. 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/QM4TW1570424.
Sinfonia per la mandala in D Minor: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8df686e65257df9278671203622045236657a90136379ccab094eb993a0b0f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM4TW1570404.
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
Sinfonia per la mandala in D Minor: III. Giga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c177ed465436b61e7fbc85549251349d1da166e41961e04678a74930c83ee6. 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/QM4TW1570406.
Sinfonia per la mandala in D Minor: IV. Minuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7ebf4ec5b3199ba9e6b4bd016238a6c170462c75a29bcc2e15de409b9be5c. 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/QM4TW1570407.
Sonata per l’armandolino in G Major: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067074e842105ca6b47ac462a74ad7d12a9a0cb944faf83b4d55736711d62186. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM4TW1570411.
Sonata per l’armandolino in G Major: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d7cbff352953b0f06f6e5fe72cb1d8a61ca07e86dad44ad43d759c693896f9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM4TW1570412.
Sonata per mandolino in E Minor: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f37902ab39e7f582bcd55ed86081d5afae1f1e216599ee5ac04d535751b973. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TW1570416.
Sonata per mandolino in E Minor: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23d797d87a0ef2e236660795bf5d48ef70fb0f19c5bcaafccd72413e5f9bc57. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TW1570417.
Sonata in G Minor, K 88: II. Andante moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0391542d87b8f9991af833e7a9ecc0c81f0911520e1bd8ae24c94e2e8852750c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QM4TW1570420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12b114bc570674b1b1ba3d20e484bab446bc1484e0e3d864faff0ec8c45fae. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM4TW1570421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba93838cab89a842bf5c3a192ec87d8b547c356db22b0d32291e08c7cc2254cf. 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/QM4TW1570422.
Sonata a Mandolino Solo e basso in D Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d8eea7a1c67ddb296896f50918f11bda53fe6553f2504b8e91aa9ad79a528. 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/QM4TW1570423.
Vivaldi: Mandolin Concerto in C Major, RV 425: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ebb04cc104a6c6c3cb4bb4530153c9c37eae8332d13c0434ae91f9e2335f7. 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/DEA800115277.
Musica barocca: Baroque Masterpieces by Albinoni, Bach, Handel, Vivaldi...
Vivaldi: Mandolin Concerto in C Major, RV 425: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e4138eafa265fb5c32bcafcaf1f0201c2eab5dbb0b307ab2f7e651d5316604. 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/DEA800115278.
Concerto per violino e archi in A Major, RV 352: I. Allegro molto
Vivaldi: Concerti per violino III "Il ballo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e5568cbbcd7a1717105bae57dcc427edc9a1a97625fbe58a1fcb1fbf874810. 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/FRX290805011.
Concerto per violino e archi in G Minor, RV 333: II. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a55f6ae4614afecbf263c57f17a33633e6737b0e1e978f9fa49c2bf9de3c9bf. 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/FRX290805042.
Concerto per violino e archi in G Minor, RV 333: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb469cf1f48437e2d54ca85393e043f14915ba47d3c087fa0c4ee5f80e4dce8. 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/FRX290805043.
Concerto per violino e archi in G Minor, RV 333: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d5676f05f20d5d3be815a778ec1312d11fae3b9480335571167a95157bbada. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRX290805041.
Concerto per violino e archi in A Major, RV 352: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d26257df314aa40e8c43e889a66b50d0b11f342813f385731e709e44e57b7a. 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/FRX290805012.
Concerto per violino e archi in A Major, RV 352: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fb0d62a136a4f8bb5eeb8fb10b4df81c55bfcb63c331be8b4aeb8229c6620a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FRX290805013.
Concerto per violino e archi in G Major, RV 307: I. Allegri e molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6213ac65e59033f37fb0f6afebdada371e2b99c0f869e84ab44b02f507737b4. 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/FRX290805021.
Concerto per violino e archi in G Major, RV 307: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83ded72df31da2110480e95776cc83fa19c915c888831252ba9366392426a8d. 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/FRX290805022.
Concerto per violino e archi in G Major, RV 307: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394299750d59b716d25205e4eb8cc1d5b2970b45ddafec2405abcfda3d18f2bf. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRX290805023.
Concerto per violino e archi in E Major, RV 268: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf1543b9889f00acb24977ec09dd79edfda0fcd70edbb0333776c465ca4b762. 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/FRX290805031.
Concerto per violino e archi in E Major, RV 268: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152b3ae4429944262b286c6cf95dc4fbf6c26d61ae8596438671006e9658287. 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/FRX290805032.
Concerto per violino e archi in E Major, RV 268: III. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524afd239899eead47706d22a857b2909cb7035c642b68ae10d2fd7ca77cc08. 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/FRX290805033.
Concerto per violino e archi in D Major, RV 210 "Il cimento dell'armonia e dell'inventione": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aebd0088aa65694f8d5c9fa7ab52849a0840cdde6ea4eee3d5fda475fca5f12. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRX290805051.
Concerto per violino e archi in D Major, RV 210 "Il cimento dell'armonia e dell'inventione": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f685b63a9411b0252343f9309e6166397efe43a4d9458f71fcf93c5d3737a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX290805053.
Concerto per violino e archi in G Major, RV 312: I. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28bb865f8a0c95550d685715d21bce2cf040daa4ebc48d2b5dcdaf1bde6bb01. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FRX290805061.