Orquestra Sinfónica do Teatro Nacional de São Carlos Lisboa
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 0xf060d4231f3b8485a79898fa775fcd982438ad37bdec7077a8e4e2fadddfb28f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aab5889-00e7-4164-98f9-27fd68d79ff3.json and https://artists.proofprofile.net/proofs/artist/5aab5889-00e7-4164-98f9-27fd68d79ff3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La traviata: Act II: Amami, Alfredo! (Violetta, Alfredo)
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 0xc15c2d14f5da6e8d3949ad9547037c966bd59925fbeefd52f9d8fdded9e79b6a. 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/USB8U1085602.
La traviata: Act I: Libiamo ne' lieti calici (Alfredo, Violetta, Chorus)
Coro do Teatro Nacional de São Carlos Lisboa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe330a5ccbdce6a7cda57a6d39e662d5cdf1c2a9a612f4f7e18a6148ec4e5e139. 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/USB8U1085582.
La traviata: Act I: Un di, felice, eterea (Alfredo, Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e15938c4452c03f9ed66c51a98082ef236a82da5df302bc9a8ae1e3b58986. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USB8U1085584.
La traviata: Act I: Ah, fors' e lui (Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c3bb64072920fa76572582159b3ea709fdadd9126763365ab930f46039502c. 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/USB8U1085588.
La traviata: Act I: Si ridesta in ciel l'aurora (All)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca0fa8547062f947fe9284891141576eef62dda74c030c433de0249c497793e. 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/USB8U1085586.
La traviata: Act II: Lunge da lei per me non v'ha diletto! (Alfredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef97496500c391579118b6d1a2c3802a4cd639ce42ce49fdc7f82376ddacfbf. 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/USB8U1085590.
La traviata: Act II: Alfredo? … Per Parigi or partiva (Violetta, Annina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8c05609d72f845c2b67634259417226b0dc2091d1be98c6bea9651af396e9. 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/USB8U1085593.
La traviata: Act II: Madamigella Valery? (Germont, Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f519c3ecac6e386ad9c4e9b17d27a777eacd0fe8bbdfb8f1c2a0465186c76f2. 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/USB8U1085594.
La traviata: Act I: Follie! … follie … Sempre libera degg'io (Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6144f327997a3221e5368a4f04f3cba7fe6346472c0bae18d5e414072c4a6648. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USB8U1085589.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacd69cb8f80e6198e917ded9644a5e185d665e5bef71a0b17480e62eb2b769e. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USB8U1085580.
La traviata: Act I: Dell'invito trascorsa e gia (All)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05c1cd255cd803b699d9dc0a873375ae95ff6ed4bef2c6af67cf35be1f37404. 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/USB8U1085581.
La traviata: Act III: Addio, del passato bei sogni ridenti (Violetta, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3884fd1dbd9bb8ed001fced8122620a85abdf1595f494538a7ac4eb4ba290fe2. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USB8U1086163.
La traviata: Act I: Che e cio? (Chorus, Violetta, Alfredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f02f163282cf953b9ba8f0d6006d354fffcb22d38de9ad024943001052dcfdf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USB8U1085583.
La traviata: Act I: Ebben? … che diavol fate? (Gastone, Violetta, Alfredo, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dda0540bb450a6f03cf9cd484d1580dba92d3ed1d29e813a2d856ccd3af42e3. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USB8U1085585.
La traviata: Act I: E' strano! … E' strano! (Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f2c8e3688f60101a577233b9d2d867e1ce6c20fc1fbe65f254015107936030. 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/USB8U1085587.
La traviata: Act II: De' miei bollenti spiriti (Alfredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61de59f8a61698b6c3eee2a058d25d0be0d2f142f9c48f0387ac75a9fe731bd. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USB8U1085591.
La traviata: Act II: Pura siccome un angelo (Germont, Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1feb086f3e8ba43e513b1c22b886ad5dfc9729951a936f244bb75d9623ba72c. 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/USB8U1085595.
La traviata: Act II: Non sapete quale affetto (Violetta, Germont)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fd87330be18f3b7657b022b220b13ed99f53f53f37478ee2627f8bf722a035. 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/USB8U1085596.
La traviata: Act II: Un di, quando le veneri (Germont, Violetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66be7e2c30648cad135df18bf97abc28fc57d969a3bfcd2b7da99fe02dd3c0a1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USB8U1085597.
La traviata: Act II: Dite alla giovine (Violetta, Germont)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ba171937dc96fc4e52927126784f60c1e95ac894d329adbd7817d748f67c24. 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/USB8U1085598.