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 0x7bce20215548c776ce267106d8054b7d647875a0e1362dbbb3dc4e34964c9823. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f4f040e-b071-424d-8322-e1980e830db8.json and https://artists.proofprofile.net/proofs/artist/6f4f040e-b071-424d-8322-e1980e830db8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roméo et Juliette, Act I: Ah! Je veux vivre
Orchestra Sinfonica di Milano Giuseppe Verdi
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 0x3b4e1593fd90740e38a012232360ecb8978375033e0db7f96f1f65dd6c656cb9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM11706105.
Lucia di Lammermoor: Act III: Eccola! Oh, giusto cielo!... Il dolce suono
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71066ecaf1aa8c219193c1a2294d5058f066a61d288660f464faf125412ed25e. 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/USSM11706108.
Lucia di Lammermoor: Act III: Ohimè! Sorge il tremendo fantasma... Ardon gli incensi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a14bfda5b2cf4b7330eb56db193c7e29f1b230472bd59dc084511f69815f9. 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/USSM11706109.
Lucia di Lammermoor: Act III: S'avanza Enrico!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08948537d243bff412fdfe9c1dfe2c1fbad1f7dc1441aabaf40f4b71574bed77. 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/USSM11706110.
Lucia di Lammermoor: Act III: Spargi d'amaro pianto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333fcf6532c591978752eb8bf6f700325519cd8d06cde27c554fff04c36ddeba. 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/USSM11706111.
La Sonnambula: Act II: Scene 2: Oh, se una volta sola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6133f0f861aee72a4cb1739b6beacc70a988d96fd4cd5979b59b4a9690b5503e. 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/USSM11706122.
La Straniera: Act II: Scene 15 - Vaneggia... Il passo sgombrisi...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f494fccdfa1f95bc0bc81f5f95671018eb11685ef991c31a7e09bc316d3a3. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USSM11706116.
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 Straniera: Act II: Finale - Chi veggio? La regina!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaa2aeffd0a21b6d3484ab9ff574668f0ee58debdc5f676928a40cca358e3b5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USSM11706117.
La Sonnambula: Act II: Scene 2: Ah! Non credea mirarti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503ad259d84f81706ebc0655eb80ff870e47b5d2c33142c1404e3d968b889d1a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USSM11706123.
La Sonnambula: Act II: Scene 2: Ah! Non giunge uman pensiero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c086c7cad07017842bac69a861f921ed1f412453b30196f9c2aa7eb223b078b. 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/USSM11706124.
Lucia di Lammermoor, Act III: O giusto cielo!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8b47ff57e89c6a12c56546ac50d3ebbebabe8264d603f2029c9ceff730019. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEN960400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a84db3761ad6a1f5b4383b698efa27b474a604ad91b6f8cad41ba83d7e5ebf. 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/GBBBA0341010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20d4c74d27a02d6b183234b6ddc0b8e3d9f8061ba5a68abf89aa29b86b49de3. 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/GBBBA0340970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf270d20a50a12f9cf1a74e036c12a9b90f408c4f225b65a450919997153a44f6. 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/GBBBA0340940.
Lucia di Lammermoor, Act III: Ardon glI incensi "Mad Scene"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d9f4ac8925b82e3b2eb4a2fc1c6e9a73e3890834c4a3626eba7d2cb57bfa7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEN960400103.
Turandot - Completed by Luciano Berio - final revised version / Act 3: Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb25a62013601f87388c2bea996fb34f46d1075283244132663f020710e51e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBBBA0341040.
Andrea Chénier / Act 1: "Passiamo la sera allegramente! ... O Pastorelle addio!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611f9696805814e1e011f5e5142f1389764f920149840f6d5a6d8129f9b87902. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ040900130.
"Mille Cherubini in coro" After Wiegenlied, D.498
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded9f992b9cce2ef472d8e7768ea702b0df2d70330efcf2743dbad0ecb563642. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEN960230506.