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 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 0x97f75e04d206a9e3e434619cd5f6640f3da35f8901079e6291fd68416daa4666. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cd646e5-e589-4a8b-83b2-265422dea8f7.json and https://artists.proofprofile.net/proofs/artist/1cd646e5-e589-4a8b-83b2-265422dea8f7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Arte Nova Voices - Franco Fagioli / Portrait
Stabat Mater, P. 77: I. Stabat Mater dolorosa
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 0xb720a78101cbe2057b063025b87e9a5a83734240bc0641fc045704dc9e2caaf5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITV701820001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6228ce15e6eda2c0dd0637cc615f5e63ce55d40214caa93c0af40e718f1def14. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1700144 — a six-check JSON result.
Nabucco, Act III: Va, pensiero, "Chorus of Hebrew Slaves"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c88c56c3ef1954386bff24c9e3cd23747850187e0b0e343358d767016ee8d8. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1700146 — a six-check JSON result.
Il trovatore, Act II: Vedi, le fosche notturne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac3145030ae681ebbfd00d85d9723c4810088b880cc8d1c98149b4a7c6b6bcf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1700150 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba96a75e9ed0285589b9897601dfd0cddf806d086476a41af7139d5b6f3a01be. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1700186 — a six-check JSON result.
Italian Operatic Overtures, Vol. 2: The Early 19th Century
A Guided Tour of the Romantic Era, Vol. 8
Pergolesi: Il prigionier superbo, P. 143i & La serva padrona (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bd2a28ceec3540145f40c5747b6ef0a72e309d4046e999c3ed3d8e04744d9b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ79221144 — a six-check JSON result.
Violin Concerto in B-Flat Major (arr. G. Catalucci violin and chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ddc206c7bba5e0ed3479b751dff7689a93ae3beb1650209e0523e545bf77d3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ79221146 — a six-check JSON result.
Bach: Tilge, Höchster, meine Sünden, BWV 1083
Mozart: Famous Sacred Works & A Little Night Music, K. 525
Perosi: L'entrata di Cristo in Gerusalemme
Domenico Cimarosa: Il matrimonio segreto
Le Nozze di Figaro: Atto primo: Ouvertura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b15189ae17ff189f55c51a0c483abb7f7e976ad2562a5c1cb909b46408a995. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001383 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Recitativo: Quante buffonerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f312e6c9c7e320478626632f6c1faad39dd09ecb46f4df3510a8d5bf9ae5dda. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001410 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 1 Duettino (Susanna, Figaro): Cinque... dieci... venti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc6a9c32d553d3a28f5b30676b5645207caf8dff4a40a966cdc685899360a20. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001384 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: No. 13 Terzetto (Susanna, Contessa, Conte): Susanna or via sortite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033e9718c62a21dc253249f24548ba592a21db309b945cc9c706f5232816262a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001411 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Cosa stai misurando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6238b982d7c21099e1c6d81a1ba3875a0db6836ed928802721d75f00d22505. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001385 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 2 Duettino (Susanna, Figaro): Se a caso madama la notte ti chiama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f361361948dba29e7ec023e3755a9b0834ded365c6eb13437e1020ab741f1e3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001386 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: No. 14 Duettino (Susanna, Cherubino): Aprite presto, aprite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e9f8e821f2dc606d94c58cc5b365d010708e3a4572a61e4458eeb3f8122550. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001413 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Or bene;; ascolta, e taci!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8498bbbb644c5fa4680414b1a99c3cd18c71bb46a90ec5e16d0a15ee1cbbb2e6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001387 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 3 Cavatina (Figaro): Se vuol ballare signor Contino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a0e6bb9f4996a1199018b8b68c599f274e0ddb5784248d4d709e0400da209e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001388 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: No. 15 Finale (Susanna, Contessa, Marcellina, Basilio, Conte, Antonio, Bartolo, Figaro): Esci omai garzon malnato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded2b7007ceed95ad8173678bc47c302dc5a24c586504364e988c991c04a402b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001415 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Ed aspettaste il giorno fissato a le sue nozze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9efe94cc880c28b9cc1a27ed9faa5aaa10ed258d556306f3dccda875fe0f5a5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001389 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Susanna! Susanna! Signore!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc9d87c13904c736cb64ad557d9e940988131016b19c49f2d5a1ac8cc83fc00. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001416 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 4 Aria (Bartolo): La vendetta, oh la vendetta!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cabd16928d8fcf904745e680939cf5a04e52eb910fdde153ad0c1267313822. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001390 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Tutto ancor non ho perso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d1e7861e023f5e226a586ddf347b0929650546e0073d8e7656248d7795de3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001391 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Conoscete, Signor Figaro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17087e2baa9cca5183a301ddad67837d700bbf13eb3917628bf55dd03afd84a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001418 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 5 Duettino (Susanna, Marcellina): Via resti servita, madama brillante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bf78d93d505c90dc788cc3dda968c3907c904641946c2a77f435d9b4feda9e. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001392 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Va'là, vecchia pedante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140dd062d9415181e952e6e516fddd023d52831d8a3adf563216297861e8ac55. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001393 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 6 Aria (Cherubino): Non so più cosa son, cosa faccio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2e21770b69ebfd68be8df6b89b0de7ae5dfcd652703f8ad88540f0e0e909fc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001394 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Vol Signor, che giusto siete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949050715b4ca48fe9590620553487e110033f66f45be6d88cc4c36fbd9d8575. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001421 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Ah son perduto!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1688f65717dc962b314434b4e6041073d64108a1a1304ccc6dae701ce929e829. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001395 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 7 Terzetto (Susanna, Basilio, Conte): Cosa sento! tosto andate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3829934c116fe3f3822839141c86088f9e1474ffa5640a079f1a6af6091c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001396 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Basilio, in tosto di Figaro volate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa846f9dee870ce3abc7f23bceba10828ee2f6eb0cc4d1d2d53606b078ccf67. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001397 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 8 Coro: Giovani liete fiori spargete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d45b85fd0a7341a9f24e424f289fa1e55206a4e6fd6f62a3e1578585cc1c32. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001398 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Cos'è questa commedia?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216aaa0d4cce1690031e2fd74d578594b2668374257da9f2984606bc68920f18. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001399 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Coro: Giovani liete fiori spargete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ca1983ae9e02700c521fbbbe9c15393392a6324548d2f9a370b0bf4789ead. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001400 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: Recitativo: Evviva!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078b8af49de36b33b3ce02dcb3267fa0e9e4b8d7ab389e5336f889b1f51be057. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001401 — a six-check JSON result.
Le Nozze di Figaro: Atto primo: No. 9 Aria (Figaro): Non più andrai, farfallone amoroso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f0f9b02224feaf47b3e748e64ed0dccc494a3345c43fe25d3ac0b580a3e395. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001402 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: No. 10 Cavatina (Contessa): Porgi amor qualche ristoro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17128c2af17b1832ad86c34e90be43cd58b2e9c93a0371e6b70c1495361b2407. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001403 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Recitativo: Vieni, cara Susanna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed955068ca99dfb15947d3aa8f8a8740b96b8696e5ef061af9a6f5b1f5a497f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001404 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Recitativo: Quanto duolmi, Susanna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0e2c5d738c05429ae5a777d143c762d6d124875493d6c3493db3c9b978a94. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001406 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: No. 11 Arietta (Cherubino): Voi che sapete che cosa è amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eb13f10a10322c1c9eca91a3b9c9094d0691d679a31f2ce13922305a4c42eb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001407 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: Recitativo: Bravo! Che bella voce!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4643d9e32f45094f7517e05f60b2f0ca182dec9eb0cfbc3a6a8857a4d079b3f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001408 — a six-check JSON result.
Le Nozze di Figaro: Atto secondo: No. 12 Aria (Susanna): Venite, inginocchiatevi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefbc345c7a7b30e76a50a2542d996c3e0c3ef6d3412f00ab74fc271e761f237. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP620001409 — a six-check JSON result.
Lucrezia Borgia: Act II Scene 8: Figlio! … Era desso il figlio mio (Lucrezia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a5975e6cf52bbd953c982e0f7a6567389387d97593a36f4e16fc9a396795b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ71232561 — a six-check JSON result.
Lucrezia Borgia: Prologue, Scene 1: Senti! La danza invitaci (Chorus)
Il Coro Lirico Marchigiano “Vincenzo Bellini”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2bef0754ab240de3cde37dffc07152bd4cf32bc2c835dbbcb89bae593c42bb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ71225604 — a six-check JSON result.
Lucrezia Borgia: Prologue, Scene 3: Com'e bello (Lucrezia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76210a511436c1a20021cb5bb6051e9b7b26260fd9259982ea327978625abaa8. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ71225606 — a six-check JSON result.
Lucrezia Borgia: Prologue, Scene 3: Maffio Orsini, signora, son'io (Orsini, Gazella, Petrucci, Liverotto, Gennaro, Lucrezia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39aeac58302ada6c4807596bec2b98bbce39091d5c763dc76f5c6c463cf4617. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ71212560 — a six-check JSON result.
Lucrezia Borgia: Act I Scene 1: Vieni, la mia vendetta (Duca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6411a37c66220c72b9dbf1d036988ab5d09cfa40cae3de65bb6ada1808a4d98. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ71232560 — a six-check JSON result.
Lucrezia Borgia: Act I: Finale: Infelice! Il veleno bevesti (Lucrezia, Gennaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e0617eeb93f66502c2d253f17f6681450b3c7a139078fc48ca3979feac231a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITDQ71225613 — a six-check JSON result.