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 0xb847b3378bf919cab7cc26c3a9437ace653de3d124c3f7df4290f34acdf10b47. 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/26cd2bcd-099e-44cc-b244-e7d63ce25ada.json and https://artists.proofprofile.net/proofs/artist/26cd2bcd-099e-44cc-b244-e7d63ce25ada.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 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 0xb2c2f39acbaa1edbdf7ffc73bfdfef36783f95bc4f6979f931a3125c4526cd7f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX3662200047.
Último Beijo / Volta pra Curtição / Foi Pá Pum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07a0c6226781fed761501e8af4fe8c2ddeea7c9f4e824259b5805165ae3d11c. 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/QZW9K2283189.
Agora É pra Valer / Quase um Casal / Não Vou Mais Atrás de Você
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df3e2b183dc675bddf64185c9bc11269b51a94e98d4b9a1643b73b984af6724. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2325248.
Ponto Fraco / Deixa Chover / Saudade (Ao Vivo)
Ponto Fraco / Deixa Chover / Saudade - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667f3b8e6bd3fb2861e4d69d6d7f1b6a0801415e025f46806d6b1d48331f1508. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZTPX2380715.
Do Fundo da Grota / Tô Bebendo Todas / No Bar da Esquina - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59fb905fea5709ab3c8c295b616aaf34d0bd7d30894e71d24745be5c778c8da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKEXT2300011.
É Disso Que o Velho Gosta / Alô Segurança / Chorou a Gaita - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa81784cf3c9721f2d3ad576a0de3e775893108504917bcc6d4e0f13a5ad41d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKEXT2300012.
Churrasco e Vanera (Ao Vivo em Porto Alegre/RS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead59e8e4ff3e7b931709c249b4f4481135eb110aa83be62c55d1349aa44b99a. 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/QZGLS2478204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf624640ae68aea727a0ce0faa0c9a522c1efc878c3e82d2189772d1d5c20c26. 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/QZGLS2478205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035ecd273135f459c5f1cd0cd2954165d082ff853d19186b776c9328355585f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX3662400018.
Churrasco e Vanera (Ao Vivo em Santa Catarina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b893bdae605ca8c2029b8e55435b6afe281c149ea85776dbb353326fcdcc75. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNJY2477240.
Churrasco e Vanera (Ao Vivo em Porto Alegre, RS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757d04a413e30d18fb1fa4da0ffb2f7a7097220831826816c996470d33a0c518. 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/BX3662400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd3146d1ee23217508cd3f183278d438a04ab0a5a2d45fa1cdc12edf23cf48. 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/BX3662400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4c54ffde4ff4dca6d3c90981d847de3f6a27bb377baa4ae4d48e57a931c853. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX3662400012.
Tentei Te Esquecer / Um Degrau na Escada / Minha Estrela Perdida - Ao Vivo
Tentei Te Esquecer / Um Degrau na Escada / Minha Estrela Perdida (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe587621339532b412f596ff369776d9cfa08dec448fb0376bda71d2cb4b7798a. 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/US7VG2487848.
Não Chora China Véia / Por Causa Dela / Pra Dançar Vanera - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23546ee5cb39f08b8a68fdb97e66ee107e4dc1909d0658f573c6506d5571436d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKEXT2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9049534f0455de9214329312c25aff6925ce558ea70c21885f20e3540dbc683. 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/QZW9K2331959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84c0683490d58800a90156f3c440dae7f47fae54afabdb923f2961b637317b9. 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/BC61M2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb7ce25f5e550b903ec2e6caea2005d77111fea378b1f8dba1a05bd028fdc9b. 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/QZW9K2426022.