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 0x832514284dfea4c613ffc75fc87303624a2caba2e86fdb001878ced0a175b818. 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/80f87631-8f71-4440-b415-475ba18d25f6.json and https://artists.proofprofile.net/proofs/artist/80f87631-8f71-4440-b415-475ba18d25f6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Orquestra Sacra Paulista - Hinos CCB Vol. 1
Hino 108 - É Jesus a Fonte de Riqueza - Sax Alto
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 0xf891682f8454c4c0c3118c7620e741785b6aad0e02c4e12967a6fa0f947d77d7. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/QZGLS2381877 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894fcfbc27dd43d978c9c86f681696e1cc778276bd5a999e96f06dcef8c3300d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZGLS2381878 — a six-check JSON result.
Hino 174 - Vem Atender ao Seu Chamado - Clarinete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a7537ce7c23797c87c9aaa75469cc13aefd38573fbb27e105f1ca4b3fa2e72. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZGLS2381879 — a six-check JSON result.
Hino 284 - Louvor nos Céus Altíssimos - Violino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d507cb1eb1470b853b2c8aa75c3c846302f6f837079582646473771bf2addf. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZGLS2381881 — a six-check JSON result.
Hino 200 - Não Se Turbe o Vosso Coração - Trompete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08c1444c1fb972bb1d4851c8d94bda41c28a5c1978088a8202107814fea1624. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZGLS2381882 — a six-check JSON result.
Hino 91 - No Esconderijo do Onipotente - Eufônio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b34fc1769abf9632f010bee7b9450a69b58b40063d4eda4727119b513da3f7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2381883 — a six-check JSON result.
Hinos Ccb, Vol. 2 (Osp - Cordas & Convidados)
Hino 421 Recorda, por Fé, Minha Alma - Violino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32b9a386e6ca4c0e94df91cd34a9dd89697d245b38495ccd03679db79de6ab2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNJV2344880 — a six-check JSON result.
Hino 194 Vós na Verdade Chorareis e Vos Lamentareis - Sax Soprano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b7fc48364b752dbec7313b98feb355806500ebadaa9066b88d3584891d25b5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNJV2344877 — a six-check JSON result.
Hino 102 Sinto a Voz Divina do Meu Fiel Pastor - Violino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0b187e2363ca43e32a2250e082ac9e68ed686ebca83ba2887e0bcb2d9ee35. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZNJV2344878 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833d1f75103cb3b00930570a4e203abbe41b63d26d7acef8c97b09192d2b8905. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNJV2344882 — a six-check JSON result.
Hino 367 ao Que Vive para Sempre - Acordeon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f679e7b3237d31eb6636bb0b0ff82cecf39dfbf52ba4147b0706f3cfbb4812. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNJV2344883 — a six-check JSON result.
Hino 234 o Meu Ser Entrego a Cristo - Violoncelo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc783866d6f6592bec6caffa5bd0a7f5d1b4a3a0941db3209e30e4e2bd02160. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2344881 — a six-check JSON result.
Canto Congregacional - Orquestra Sacra Paulista
Cristo, Meu Mestre... Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106e6a868da05852d0d0aa8647efeb4871e08501fe5a5d8d639e17bf70ba69c1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNJX2346718 — a six-check JSON result.
De Deus Tu És Eleita - Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95343fa4e76f1a80e59a0be6fae9278fa19dd047a98987fb8fa1aa300df737c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZNJX2346719 — a six-check JSON result.
Ouve a Nossa Oração - Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fa0d4cd707159a97c0b69daa3c39fb8b3c5331b6732719146dc3bee4fd332. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNJX2346721 — a six-check JSON result.
A Rocha Celestial - Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560a594e394b96243d36cf91afa65d4170cecf88eaacc6ba18926d346319fc2e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNJX2346722 — a six-check JSON result.
Glória ao Justo, Fiel Cordeiro! - Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3da3ac146d562f60aac6c2191d92c4ecdafd3d11cf5758facef1e8f683469c6. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZNJX2346723 — a six-check JSON result.
Granjeai, Granjeai os Talentos - Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2428e79f89eecdec75a34c971607613e4c9ece66adb889b42aaa5f347ee574c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2346724 — a six-check JSON result.
201 Deus nos Guarde... Canto Congregacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10feff07f70927de094a83aeff18fb019f6825fcf031ad07381d42a9b15da08b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2346725 — a six-check JSON result.