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 0x2ce8240bd97d1a9302c2c1c51a950eb04bd17ec426a3b32b1b2889ef94799a1b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bc8260f-16cb-4aee-b057-488b4a8cfc79.json and https://artists.proofprofile.net/proofs/artist/6bc8260f-16cb-4aee-b057-488b4a8cfc79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rossini: Stabat Mater (1832 Version) & Giovanna d'Arco
Meyerbeer: L'esule di Granata (Highlights)
Il viaggio a Reims: Dell'alma diva (Live)
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 0xe50df3dad4f0606e6db21c77f348a75291d1fcba1b3b2ade5c24ac4a55cb9f3c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKI191534004.
Cublai, gran kan de' Tartari, Atto primo: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db2b6a444b31117a79239e8a5468848f6b21b8abef52bafd3063c0a490068f. 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/FROV62437901.
Cublai, gran kan de' Tartari, Atto primo. Scene 15-18: Finale. Venite, il piè movete (Tutti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88807c68db09194f632c85c03c5c8caa6c97781068375f6af0077eedea54bc5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FROV62437933.
Cublai, gran kan de' Tartari, Atto primo. Scena 3: Recitativo e Quartetto. Signor. – Attendi. / Dal Gange ai regni Eoi (Alzima, Orcano, Cublai, Timur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5098d50f0a6118efd3d44e6645ab67a994573559bddd2dfd32cb22bd178942d4. 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/FROV62437906.
Cublai, gran kan de' Tartari, Atto primo. Scena 4: Aria. Sono un buon uomo (Orcano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100a9c7ef0d564b1040bbd2e40a88e77639039b0349575624c0498b2680c55d. 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/FROV62437909.
Cublai, gran kan de' Tartari, Atto primo. Scena 5: Recitativo e Duetto. Alzima… – Che vuoi dir? / Deh perchè mi guardi (Alzima, Timur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01655d4801a7b85ade011a3406c72cc99b8a3ada5e837f93dac95cd573ae9400. 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/FROV62437910.
Cublai, gran kan de' Tartari, Atto primo. Scena 1: Introduzione. Cantiam lodi al gran Cublai (Coro, Cublai, Orcano, Posega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e1863ddd80036effc8d1862b928249b575e26710936555ab8b0cd6fc214d58. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FROV62437902.
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
Cublai, gran kan de' Tartari, Atto primo. Scene 1-2: Recitativo. Orcan, tu che hai il mirabile criterio (Cublai, Orcano) - Recitativo. Posega! Sire (Cublai, Posega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932b69d12210d8fa126617c58e6f0be8bcd39c3341c62dd873df14c529460c62. 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/FROV62437903.
Cublai, gran kan de' Tartari, Atto primo. Scena 3: Aria. Vien qua, figliuola mia (Cublai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a55614d8d59a19fafea567fcff6ca29075d9bd74aed2e0d814b59f70f6c6a67. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FROV62437907.
Cublai, gran kan de' Tartari, Atto secondo. Scena 8: Quartetto. Dritti! Ranghi! (Cublai, Orcano, Memma, Bozzone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1010ae9b7adfcefbc7b510598fa24b3294ad20a9a71b9b7f5b1437c2ba9d20ae. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FROV62437948.
Britten & Shostakovich: Music based on texts by Michelangelo
M. Palazzi: Recital di arie d'opera e da camera
Rossini: Zelmira, Act 1: "Perche mi guardi e piangi" (Zelmira, Emma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9d083cfd1d7e140d6df6ed293fd57bbe550d923de9508b862086fb34017847. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBQXY0941290.
Salieri: Cublai, gran kan de' Tartari: Terzetto. Olà, Cublai (Memma, Bozzone, Cublai)
Verdi: Rigoletto, Act 2: "Ella mi fu rapita..." (Duca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a1ca171d81a3131aad77624ff7c04363ed30c8e3e5e7de49e29edb8cc69267. 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/GBAYC2102601.
Verdi: Rigoletto, Act 3: "La donna è mobile" (Duca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a477ebc191f79bb7d9da29e3a2722a734569cb6f319cd105be2af305db7f2cd. 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/GBAYC2102604.
Rossini: Guillaume Tell, Act 4: "Asile héréditaire..." (Arnold, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87eec630167c741283957d60905a7000cc398b36be2bb04d91d6dd06c65bd196. 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/GBAYC2102606.
Rossini: Guillaume Tell, Act 4: "Amis, amis" (Arnold, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cfda2ae51e1da443af084d30aa211d7f849fec16010cf24cfd3ad796ac4e78. 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/GBAYC2102607.
Donizetti: L'elisir d'amore, Act 2: "Una furtiva lagrima" (Nemorino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c72d8e21807084b1a3e5f922e7244a97c423dae6ac09687df5dc20dfc8b6c78. 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/GBAYC2102598.
Meyerbeer: Les Huguenots, Act 1: "Ah, quel spectacle enchanteur..." (Raoul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb0966b6db13236442b0ead4b3b60222156508858dd46927ab2de0cbd0001c7. 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/GBAYC2102687.
Meyerbeer: Les Huguenots, Act 1: "Plus blanche que la blanche hermine" (Raoul, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c44a788ffbda2b78d6e196b060d81e425273c0cce110954e74ecea3fae967d0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC2102688.
Rossini: Moïse et Pharaon, Act 2: "Vous avez entendu..." (Pharaon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f367e115d32781f661929f271787df5c3b6d80168cf0374c27d95b5e9b4d10. 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/GBAYC2102611.
Rossini: Moïse et Pharaon, Act 2: "Moment fatal!" (Aménophis, Pharaon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7462a9a9360069123719b3ff98dfd91bfdf31f08cc278f30fbacf1f2b2032cd1. 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/GBAYC2102612.
Donizetti: Roberto Devereux, Act 3: "Bagnato il sen di lagrime" (Roberto, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fd4b3c7e22406a6c72b350bc238b2a49b49d17768f2bdb49bbe13844b0fb31. 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/GBAYC2102682.
Massenet: Manon, Act 2: "Instant charmant, où la crainte fait trêve..." (Des Grieux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae01e04adaa99c51722bb0f5bfa875b9122d051fc2c0029aa7fe04415c59512. 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/GBAYC2102683.
Massenet: Manon, Act 2: "En fermant les yeux" (Des Grieux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6122acc6a00829775b69131a8928e62f40d5f1a7ebbffc7b6529bc5c6cb515. 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/GBAYC2102684.