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 0xdafd8f8ec1609d49756c17768b22d473188b3f33f4f39f7c88b192db0bec3bfc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e91e6e0a-f584-4608-a6d9-496fb915798e.json and https://artists.proofprofile.net/proofs/artist/e91e6e0a-f584-4608-a6d9-496fb915798e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x22005cf152e951922b4308cd63589bccbb5cdae9f87272d7d2e65458cbc3d4aa. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:47:19Z), 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/BXQQQ1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8238452aca466ce0935024c85af621c2f973e1cb8f208fd52d35c628e8b0788. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BXQQQ1800068.
Quinteto S.A. No Release Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b78cb3adf1592da2ad94ae2d079c3cf37de05ac88470e0d6853acb34ee1e77. 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/BXQQQ2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44031a5d1c4aa5e1ac856ac809b8ff124c39ac36735f76b73b4b4c4fad4c1ffa. 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/BXQQQ2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6fea5ed1d8f23100129f8d5a3ff116de061fc2d0c16cb56c43f1dbe9b0702. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BXQQQ2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99592ead79c4f23a06759ec8988042f21c53a8c6f6a90cf0fed6baa354bf6e5b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BXQQQ2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71a286c3d9cb2832ebdc64ee4f853349f7129e64e1cb402cc0fcf11a8448c9d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXQQQ2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f2f2fc57b37bc899df6462c9b4c1a43b0580da4919b8dd40f68e4f48eae6c5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXQQQ2100013.
Castelo de um Quarto Só / Lucidez / Mas Quem Disse Que Eu Te Esqueço / Nascente da Paz / Meiguice Descarada / Caxambú / Não Vadeia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264fa6f77c8e26835861abf3b383eb11a890976f1ee0fee3e45e5caa8ff0769d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BXQQQ2200004.
Meu Sorriso / Amor Sem Fim / Te Amo / Não Quero Despedida / Fim da Tristeza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04df29e70f2b20182f3309773ec166083986e9cd2df1d4606fa2ba39c3b47502. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/BXQQQ2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47de58c5785643f74b072f568e20b35717824600de3a484457a540fe8282cce. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BXQQQ2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb60cf444a80ea34b92c7eb4953de8a4201644036c81ac8b8ac55b48ef1eee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXQQQ2200008.
Palma da Mão / Nada pra Fazer / Onde Mora o Pagode / Tá Escrito / Estrela da Paz / Capoeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55f504e0f6690cc26f8f763fcfd39074ada0349031895a81ec3f4dc834b08f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXQQQ2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fbd07e60fa818a7c8cc52e0a051da0cebe08681f8722d6eeca44cc10f05804. 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/BXQQQ2200010.
Grades do Coração / Horário de Verão / Porradão / Da Cor do Pecado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab7a083cd1aa5b1663fc149cd7163964060241d2af4c78ddfc2527f972e96db. 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/BXQQQ2200011.
Cara Valente / Já É / Alguém Me Avisou / Cadê Meu Amor / Dor de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74015352325f35db289cf6c4271f15a88428947734604f9ae19e105b82fc980. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BXQQQ2200012.
Água de Chuva no Mar / Canto da Razão / Sorriso Aberto / Samba de Arerê
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21200791138a1ce4d66b0331c94fbb7eb963290afeda23155a81bcf2456b1bf9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXQQQ2200014.
Que Dure para Sempre / Sempre Será (Ao Vivo)
Decisão / Súbita Paixão / Preciso de Amor (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d030d4b507038f04d9949cca741244ce17fb87c5270e3c42b67f4b045dfd6d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:02Z), 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/BXQQQ2400006.
Preciso Te Amar / Maçã do Amor / Amor e Amizade (Ao Vivo)
Não Tão Menos Semelhante / Pintando Amor / Tudo É Festa (Ao Vivo)
A Gente Já Não Rola / Só Penso no Lar / Reinventar (Ao Vivo)
A Gente Já Não Rola / Só Penso no Lar / Reinventar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa187fbe72991377a68cd8b73f364ef244fe6fc26d35facf8b8cf6cde6bc73d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:25:27Z), 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/BXQQQ2400013.
Perfume / Pra Ver o Sol Brilhar / Desafio (Ao Vivo)
Briga de Paixão / Golfinho / Quando Você Me Beija (Ao Vivo)
Tô Amando Você / Faz Tanto Tempo / Volta pra Casa (Ao Vivo)
Entre a Cruz e a Espada / Ex Namorada / Chamada a Cobrar (Ao Vivo)
Não Tão Menos Semelhante / Pintando Amor / Tudo É Festa - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e1498c6d0d0c4dca7ff20b457ea8c52a0b3e927d348ebd3cc3c31f588639dd. 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/BXQQQ2400008.
Entre a Cruz e a Espada / Ex Namorada / Chamada a Cobrar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac433d935be9913f47822439f78909746ad8dfa926efbaf41ddfa38cf43f4ed2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BXQQQ2400011.
Tô Amando Você / Faz Tanto Tempo / Volta pra Casa - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44f0f644775d57865c789aa3d0dd58e87dda47574d98b43fa46031b91d50fc5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXQQQ2400007.