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 0xa0acb1ac0a8effd945b1dcc69b8099d1a04cf5e474ae131853e9ca3b9ba6c5c0. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26c49995-5c9d-4e30-af2d-babccfe321b5.json and https://artists.proofprofile.net/proofs/artist/26c49995-5c9d-4e30-af2d-babccfe321b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Verdi: Il trovatore, Act 1: "Sull'orlo dei tetti" (Ferrando, Coro)
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 0x96ab18effad2277230671fde2529a73a5fe42ddb5abbcd4ccdfd02b4caee983e. 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/GBAYC1400739.
Verdi: Il trovatore, Act 1: "Che più t’arresti?" (Ines, Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4127256fe561ccca91e7cf34216b2d0286b29179b07c04e67a8fe8710d4e0a87. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBAYC1400740.
Verdi: Il trovatore, Act 1: "Tacea la notte placida" (Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4fb6ef00422614aac6f747143352209b54429851e2b08efe84155473ccfcbe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC1400741.
Verdi: Il trovatore, Act 1: "Tace la notte!" (Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b56236f65b7dbc8a952d3000338bb064224787f5f5b6d2ddd6c07f5ce77b66f. 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/GBAYC1400744.
Verdi: Il trovatore, Act 1: "Di geloso amor sprezzato" (Conte, Leonora, Manrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f81802ad48c90e006ce70347a96ec126fee09565398ca130d56004a257d730. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC1400747.
Verdi: Il trovatore, Act 2: "Stride la vampa!" (Azucena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac03130ef9dc3ee724910e1eb89a6a4ed7d6548fb71ec9837f6852fc4688fbbd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC1400749.
Verdi: Il trovatore, Act 2: "Mesta è la tua canzon!" (Coro, Azucena, Manrico, Zingaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0efe8f1738527d4f0884bb91b4e4c253e29dfcdc854489ad26a236f5fcf614. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAYC1400750.
Verdi: Il trovatore, Act 2: "Non son tuo figlio!" (Manrico, Azucena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d571f8a9da1a519e02cb6e4e4d9552f5201bd72b51ec99fd87ce7871da7cd3f. 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/GBAYC1400753.
Verdi: Il trovatore, Act 2: "Mal reggendo all'aspro assalto" (Manrico, Azucena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72ea645ec0ca680e0a1ae4327f4bc74d6f84bb58eff004b3156fc13e34b171b. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBAYC1400754.
Verdi: Il trovatore, Act 2: "Il balen del suo sorriso" (Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf352dcf948c720164240d252c28f62962554c361604b5de5d00cb9009d23acf. 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/GBAYC1400758.
Verdi: Il trovatore, Act 3: "Or co' dadi" (Coro, Ferrando)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395916abc075f05eb5894409d944f42492662fbf541f301bddfc5c17bab12f58. 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/GBAYC2301204.
Verdi: Il trovatore, Act 3: "In braccio al mio rival!" (Conte, Ferrando, Coro, Azucena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbf8392dbce8c2c02dd4204bb06850215a7a37ba1e7ed3b52ebf8a2539b8304. 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/GBAYC1400765.
Verdi: Il trovatore, Act 3: "Quale d'armi fragor" (Leonora, Manrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726f158a778f3e7d3d16d4f2118cd07ad4c4fecd051465568f981049e854c6f9. 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/GBAYC1400768.
Verdi: Il trovatore, Act 3: "Ah sì, ben mio, coll'essere io tuo" (Manrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d7203de5a000fb736bbbd5343dac000b76ddf0d0b44b6e993ddceeb5e960bc. 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/GBAYC1400769.
Verdi: Il trovatore, Act 3: "Di quella pira, l'orrendo foco" (Manrico, Leonora, Ruiz, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50f01ce4a3557e4a03a3a4bf5174f267cb6e6cac93d80090259cf01cfc906d5. 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/GBAYC1400771.
Verdi: Il trovatore, Act 4: "D'amor sull'ali rosee" (Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a23f25f97293fbb964e0caec952f81e6547ee77d73159cc7cf9dbff40c9bce. 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/GBAYC1400773.
Verdi: Il trovatore, Act 4: "Miserere" - "Quel suon, quelle preci" (Coro, Leonora, Manrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a098a8e4badd7dca9f85da51f56473a5f9e2f4af185cc859007c6174f10a31. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAYC1400774.
Verdi: Il trovatore, Act 4: "Di te, di te scordarmi! Tu vedrai che amore in terra" (Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1495c88ecd828d8986ce6aa79b5081176a45f0b44711af76faa39137f1c96007. 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/GBAYC1400775.
Verdi: Il trovatore, Act 4: "Colui vivrà" - "Vivrà! Contende il giubilo" (Leonora, Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b24347181aad7ba38518547672418d97ce4bae5ca4cce9309efaeea9c23e2. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBAYC1400779.
Verdi: Il trovatore, Act 4: "Un giorno turba feroce l'ava tua condusse" (Manrico, Azucena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b906cbf9ba4a3b2187d7686aec9dc16789c181605b9159bfb1f2169e0a91aac. 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/GBAYC2301208.
Madama Butterfly Lib. Giacosa and Illica (1997 Digital Remaster): Un bel dì vedremo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a49471548b6a39bccd32e026eac6247cbd45e8be03c3a5aa888e44519722438. 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/GBAYC9701071.
Puccini: Turandot (1957 - Serafin) - Callas Remastered
Puccini: Turandot, Act 1: "Padre! Mio padre!" (Calaf, Liù, Coro, Timur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c6f281a2c5145a0868b8d68a6d361fcc30f72526c5c0e1120823eebc6f0f8. 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/GBAYC1400814.
Puccini: Turandot, Act 1: "Là, sui monti dell'est" (Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c503cfee8c3b92c06d752862f8ea1ae4759892892e9ffddea120bee8e1c078f. 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/GBAYC1400818.
Puccini: Turandot, Act 1: "O giovinetto!" (Coro, Calaf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c9682b19285e6994be4811545201108179d107f1c30585f8b7f26f821e8af7. 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/GBAYC1400819.
Puccini: Turandot, Act 1: "Fermo! che fai? T'arresta!" (Coro, Calaf, Pong, Pang, Ping)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131da3ea8b5edecca3308b9286892cc051fb6d252098dc79a3315cb53d3b1429. 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/GBAYC1400821.
Puccini: Turandot, Act 1: "Guardalo, Pong!" (Coro, Timur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0552487951371892b1a64322c0ca72dccf64457a14be1d31ec4289fdf71cca1. 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/GBAYC1400823.
Puccini: Turandot, Act 1: "Signore, ascolta!" (Liù)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42366e924dfdc6349b7dad8657a0658da360e115ff87c448dd762dba28ecd21b. 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/GBAYC1400825.
Puccini: Turandot, Act 2: "Ho una casa nell’Honan" (Ping, Pong, Pang, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4642aa6b4169b1801af432103325f5cf86898a9e51babb298d0442933fcce891. 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/GBAYC1400830.
Puccini: Turandot, Act 2: "Gravi, enormi ed imponenti" (Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0724be9e0cc5734e1b277d0193ceb07159d94bcdda1d14c8467d16de2dc67fd7. 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/GBAYC1400834.
Puccini: Turandot, Act 2: "Diecimila anni al nostro Imperatore!" (Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00d76723e911f3589e44e1a1d0505a9a6f21e2c8ce85387bf27e0816df4599d. 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/GBAYC1400836.
Puccini: Turandot, Act 2: "In questa reggia" (Turandot, Calaf, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cba75ae39fe2238bc77981616d2ad7082681642daee2ab4c55d87d346cdc57. 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/GBAYC1400837.
Puccini: Turandot, Act 2: "Straniero, ascolta! Nella cupa notte" (Turandot, Calaf, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3075607ff88c0fbef4202eecdbe96f63e29a0cb0d3313ed73c81b611f24eab0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC1400838.
Puccini: Turandot, Act 2: "Guizza al pari di fiamma" (Turandot, Imperatore, Coro, Liù, Calaf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5281b800b253d20352c49b9c8cf700a266f7d9f6dd9b1811f317a54de37d20cf. 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/GBAYC1400839.
Puccini: Turandot, Act 3: "Principessa divina!" (Ping, Turandot, Calaf, Liù, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8fcce74f703cd55d5d25e38fd9ddb0c72297ec7bdd58b6ac5619188fdb2d35. 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/GBAYC1400848.
Puccini: Turandot, Act 1: "Popolo di Pekino!" (Mandarino, Coro, Liù)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f4b7263409e399caab66f40b6e2314ca65c2fa9f7bf7824121f6efc26b9b1e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GBAYC1400813.
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
Puccini, G.: Turandot (Callas, Fernandi, Schwarzkopf, La Scala, Serafin) (1957)
Il Trovatore (1997 - Remaster), Act III Scene One: Or co'dadi, mi fra poco (Coro/Ferrando)
Orchestra Del Teatro Alla Scala Di Milan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164b96929b380e8cf5bf2f506522be67d883bc71624fc9e107e4b168c4e0821e. 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/ITD009700407.
Il Trovatore (1997 - Remaster), Act I Scene Two: Quanto narrasti di turbamento m'ha piena I'alma! (Ines/Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa74e0ae1ea1a470d4172c54c9871c1eb466bf8832f59b6b7d26264cab0dc41f. 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/ITD009700385.
Il Trovatore (1997 - Remaster), Act I Scene Two: Tace la notte! (Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4c717af12ca437d990904631a48bd61fd49159a0449921e30cd04bad79cb15. 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/ITD009700387.
Il Trovatore (1997 - Remaster), Act I Scene Two: Il Trovator! lo fremo!...Deserto sulla terra (Conte/Manrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8616c993b730077de658fccee0432a62db29b4d024bc9b094460c44cd71a330. 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/ITD009700388.
Il Trovatore (1997 - Remaster), Act II Scene One: Coro delle incudini: Vedi le fosche notturne (Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4331f1f569800a402798d9f9ce67502dad14a1bef672f8da00dead5efada9b. 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/ITD009700391.
Verdi: Il trovatore (1956 - Karajan) - Callas Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4fb6ef00422614aac6f747143352209b54429851e2b08efe84155473ccfcbe. 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/GBAYC1400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a23f25f97293fbb964e0caec952f81e6547ee77d73159cc7cf9dbff40c9bce. 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/GBAYC1400773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42827e4073222b7d81a633e9dacc885264f5ef608a6be046b68e77ba452c2813. 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/GBAYC9502559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccce87cc851f0635921d64d8be7a34431f1427691118f73440ceacde6fe6b0d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC8600430.
Il trovatore: Act IV: D'amor sull'ali rosee vanne (Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8dc04ad1b2efa3830f9b787b81052180cc009987e721587f117155b328f008. 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/DEU240655607.
Verdi: Trovatore (Il) (Callas, Di Stefano, Karajan) (1956)