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 0x58eedb522753f5b283eff849086cbea7eca3411cd4d43abd1d2bfe5da99454ee. 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/f1961673-2a9e-45a3-b88b-49594a95ae21.json and https://artists.proofprofile.net/proofs/artist/f1961673-2a9e-45a3-b88b-49594a95ae21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bloco 1 - Agora Viu Que Me Perdeu / Trilha do Amor / Novos Tempos / Será Que É Amor
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 0xfbbfebf712d2ef51e48f3a6e992450a0b74eb84b1ebd551a24f18facf9e3754f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNJY2586723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac21925c9bec63372988fc2648da6b14e00237a56a7932278d41e102d2e13fc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJY2586724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a07df2262925460acec71f95946c47a0127a886f0ea9dc645481e4c974d76a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJY2586725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2171222e4da41e34f2c82c590683061502a734b79073fe6e834239b33f23c6a8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJY2586726.
Bloco 4 - Identidade / Tô a Bangu / Você Me Vira a Cabeça / Banho de Folhas
Bloco 3 - Caso Sério / Drão / Colombina / Infinito Particular / Último Romance / Desengano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c32459fab0c6030757faa1a932d02aab1ee408330752e439ed052f1d3606224. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJY2586727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2ba4331c77bfe1e126f75aab017229fce07ded4bd2f301fd331fbafb9dc7ba. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZNJY2586728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1a17086cb5da433dfac607bf6bc44b6f5094752e27dd781e5f1603e8edbb21. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJY2586729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3469c46727d64bf0d21be5143b673d4a3cc9a34d394e855b47e2952a15a669c9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNJY2586730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf786cf1d2ae12f9782e18b1ed00cf7d60134e9b1cda73cc7e49a26d5715208b8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNJY2586731.
Bloco 2 - Abuso de Poder / Fim da Tristeza / Eu e Você Sempre / Lucidez / Ja É / E Mais…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39ad9108b543ace820b3b055bf8e530b5bccd938f49028d1e48fe12294bb2d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJY2586737.