1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5b44e3d14d34d76bf2b550f08227232c0e4681da42bfdca41c33fcfee1962eee. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/034a7e77-9004-42df-9d35-3e7b8a3c7331.json and https://artists.proofprofile.net/proofs/artist/034a7e77-9004-42df-9d35-3e7b8a3c7331.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Manoel Dias de Oliveira: Sacred Music from 18th Century Brasil, Vol. II
Tractus para Missa dos Pré-santificados: I. Domine, audivi
Tractus para Missa dos Pré-santificados: II. Eripe me, Domine
Te Deum laudamus: I. Te Deum - Te Dominum
Te Deum laudamus: II. Te aeternum - Tibi omnes
Te Deum laudamus: III. Tibi Cherubim - Sanctus
Te Deum laudamus: IV. Pleni sunt - Te gloriosus
Te Deum laudamus: V. Te Prophetarum - Te Martirum
Te Deum laudamus: VI. Te per orbem - Patrem immensae
Te Deum laudamus: VII. Venerandum - Sanctum quoque
Te Deum laudamus: VIII. Tu Rex gloriae - Tu Patris
Te Deum laudamus: IX. Tu ad liberandum - Tu devicto
Te Deum laudamus: X. Tu ad dexteram - Judex crederis
Te Deum laudamus: XI. Aeterna fac - Salvum fac
Te Deum laudamus: XII. Et rege eos - Per singulos dies
Te Deum laudamus: XIII. Et laudamus - Dignare Domine
Te Deum laudamus: XIV. Miserere - Fiat misericordia
Encomendação das Almas: I. Alerta mortaes
Encomendação das Almas: II. Padre Nosso - Ave Maria
Encomendação das Almas: III. Senhor Deus
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 → block OTSBitcoinBlock must exist at that height 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 0xbc6afaeb87f7fe9b36aad36b4bf24f2ec6abb0e2ca698d9b3dea40737baaac47. 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/USA371611217.