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 0xf6bbd49e65ae7a836e744bb44925ed860f91a19cd7a8781de1d351406615b30f. 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/92422d26-0a36-485e-ac08-5ca1296b9284.json and https://artists.proofprofile.net/proofs/artist/92422d26-0a36-485e-ac08-5ca1296b9284.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pavarotti – The Opera Collection 7: Verdi: Luisa Miller (Live in Milan, 1976)
Bellini: La sonnambula, Act 1 Scene 3: "Come per me sereno … Sempre, o felice Amina" (Amina, Chorus)
Orchestra Del Teatro Alla Scala Di Milan
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 0xaba10a32fe80287b3ee1d431017c5e0b4e7f7b5749800c08dc68743d9bee1f07. 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/ITD009700487.
La Sonnambula (1997 - Remaster), Act II, Scene 2: Ah! non credea mirarti (Amina/Elvino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c92fc9a9ae8a336a35303375b34fa5df3ca13c551a82c1f94ea75c541121b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITD009700516.
La Sonnambula (1997 - Remaster), Act II, Scene 2: Ah! non giunge uman pensiero (Amina/Tutti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659da421308f686a4e23c6d9c66174ea02ecf02eeeb4a509ff807f8222dfd747. 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/ITD009700518.
Bellini: La sonnambula, Act 1 Scene 3: "Sovra il sen la man mi posa" (Amina, Teresa, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f48134d740a02754e354dc82eb80a675c18223c10959a16b4b5312842f05db. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD009700488.
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
La Sonnambula (1997 - Remaster), Act I, Scene 1: Prendi: l'anel ti dono (Elvino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956833f48caa7bc18a593509c7459d0d503a40fd0d1ffda54b9645c3f142623. 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/ITD009700491.
Mozart: Requiem in D Minor, K. 626 (Remastered 2020)
Messa da Requiem - Edited David Rosen: 2a. Dies Irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ab7e70ba15bb75b5f400bdcd983774b5e898130828a6a8297d0c4f1a9df112. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GBF071240903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a76d7fad859b8e519fab95eacf7d5de99aac7bcd341367caadf45e2cee2a10a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC9702225.
Bellini: Norma, Act 1: "Casta diva" (Norma, Coro)
Orchestra del Teatro alla Scala di Milano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546f839974315a3c191919ab26d9a97b1310fdd18875e979e128c5930a3fa02. 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/GBAYC1401979.
Verdi: Ernani, Act 1: "Dell' esilio, nel dolore" (Ernani, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0495b2fae6b86bef22c93eeceaeee7ebf5c524f9e6bdf8c4d79eb9a3c2eb9722. 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/GBAYC8200196.
Norma, Act 1: Casta diva (Norma, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546f839974315a3c191919ab26d9a97b1310fdd18875e979e128c5930a3fa02. 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/GBAYC1401979.
Verdi: Ernani, Act 3 Scene 4: No. 12, Scena e Finale, "Un patto! Un giuramento!" (Carlo, Ernani, Silva, Iago, Riccardo, Elvira, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2c4aa7ff73ed9ea82e7e0a2385d2b54b3c261a74a56a0507b2d9fafee67817. 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/GBAYC8200218.
La Bohème / Act 2: "Aranci, ninnoli! Caldi i marroni e caramelle"
Coro Voci Bianche Del Teatro Alla E Del Conservatorio G. Verdi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8520952cc911bcb04f457265461777ec88071dc09a72a7f3f266311d7393e2f2. 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/GBF079841011.
La Bohème / Act 2: "Chi guardi?" - Extract
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33aa1bd3f0b1071f3fd3d75d55a064a440f3f1166c6c8d703c6e8f10487cc7. 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/GBBBA9850210.
La Bohème / Act 2: "Chi l'ha richiesto?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3538466a10b6a392cb63ec09ad724d8f33ecc601d6a733a519058449f15d8a. 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/GBF079841016.
Bellini: Norma, Act 1: "Ah! Bello a me ritorna" (Norma, Oroveso, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f995e14fe036aff01a59e95d2f65d01c8f9952e98d2b5dcd64cec5f5bcb3a54. 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/GBAYC1400584.
Verdi: Ernani, Act 1 Scene 1: No. 1, Introduzione, Coro di ribelli montanari e banditi, "Evviva! Beviam! Beviam!" (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d925b1f40a279ed5508ca9948cb8abaf7dc16ab17c8156e11ec4e7b61c57b4. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBAYC8200194.
Verdi: Ernani, Act 1 Scene 4: "Tutto sprezzo che d’Ernani … Fa che a me venga, e tosto" (Elvira, Carlo, Giovanna, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9819cbfd503e2730a32f2d7bac4631e53a9298a35af88d42892c2ac6cfe51c. 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/GBAYC8200199.
Verdi: Ernani, Act 1: Recitativo. "Mercè, diletti amici" - Cavatina. "Come rugiada al cespite" (Ernani, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5965ad6617939ece7eb6dd85e4419ef63278503bfbb2baa87231f0b3a796c411. 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/GBAYC8200195.
Verdi: Ernani, Act 2 Scene 1: No. 6, Introduzione - Galop con cori, "Esultiamo! Letizia a noi inondi!" (Chorus, Silva, Ernani, Elvira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e925b9aa3053b79fe6fa60d248681f82c5a6f17aaa49658145cb6c643554d3. 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/GBAYC8200206.
Norma (1997 Digital Remaster), ACT 1, Scene 1: Casta diva (Norma/Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700720f301080a04c70a406dd0c5e22cdb1643655dd8aa45e493f465b515c6e7. 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/GBAYC9701116.
Verdi: Ernani, Act 2: Finale. "A te, scegli, seguimi!" (Silva, Ernani, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b8d85a278a5f04108ed2d247724092b7270fb497960a45e7572821906fb048. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8200213.
La traviata: Act I: Libiamo ne' lieti calici (Brindisi)
The 50 Absolute Essentials of Classical Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5698dcf40b842975969ed35e30b7a94fb3c45ca64ef02d57a789fd354bdf1e77. 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/USSM19200827.
Verdi: Ernani, Act 4: Festa da ballo. "O come felici gioiscon gli sposi!" (Coro, Ernani, Elvira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58d8a86ff27bb7a608e91b094bcbfc4cf2d13dd3b88f6211f0aa79ef0b8d066. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBAYC8200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244c0758d955cdb7665ab7a1a66a2343058945ac1235b428b3e0f07839facdb. 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/GBAYC1400582.