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 0xea490151a02ba4c25c35ec4f84e9a32ef557396353141904f6cc356d6fa2ac12. 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/7ce5ed24-997f-42b0-b013-638c19a7d709.json and https://artists.proofprofile.net/proofs/artist/7ce5ed24-997f-42b0-b013-638c19a7d709.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 0xc9e1a02454e16c0912561a88aeb89c587429ba9ec962d0964da052509dcdffca. 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/BR0QA2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213211454d541f6f6043ed59e8b922f18a43075654e0cd27f1f35194b9a32dc. 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/BR0QA2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70240a4cf91f149937d6eadae7c7a4c0cc92a6635e668db878f1750a14abdddc. 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/BR0QA2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30720af8e2f7653a87229a5e66c5ff8ae502afc3ce5e14e81d47fb223251d320. 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/BXWOW2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30720af8e2f7653a87229a5e66c5ff8ae502afc3ce5e14e81d47fb223251d320. 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/BXWOW2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8755b13998cb3e24945e3f4e0f5d6f0c71adebbd66f297ca47623eddf0467825. 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/BX66R2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c0aef3abd1bd589ceb5d449e807f18b3cea10e9eac33c8e6dae7d062020470. 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/BX66R2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaac83eb68535224552defd1a1c0456f9ee753cafd10fc6360d9664f31bda108. 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/BX66R2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359e00675385d6a43e1a7a0b1041f787526c3de15d84c1180bd047e14104a4f3. 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/BX66R2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb72cfc1f9f0cc5d23fdc732a55dbaf244013810ff2252d2c9ab4d96fe502db1. 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/BX66R2300025.
O Batido dos Mineiros (Ao Vivo em Uberlândia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df5791f5235eff980bdafd1adf9fc3ca35c40204bf4b94388db02cb08d72915. 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/BXJBP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba3c878e5f37168baf73453e7e6ebe9173b9a126c94d798fce5d1b4bff53038. 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/BXJBP2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94916427e4ae8d51f64249fc0a282f0e2df61d56d92934d40f7cd7fbfe741eec. 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/BXJBP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8755b13998cb3e24945e3f4e0f5d6f0c71adebbd66f297ca47623eddf0467825. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX66R2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b06a8a990fa0bb97a71de1855211a7c999347dd1cd132ce307d7ef82ac4b86. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:25:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXM5M1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f497c5eab26366be36ad5cb696604d9255dc14225785596fc36580000fb628. 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/BK29U2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88681fe56b4d36557437f77f4b05a9376753321507df1c271658a2dc3a7d1974. 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/DGA062411887.
Hoje Não é Nosso Dia / Memória / Caçador de Corações - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a626b1419b2059c74b0a5acd7c7a3259521b37ae617d2baf2d64843277e0d3. 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/DGA062411888.
Meu Disfarce / Saudade / Talismã / Desejo de Amar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff184312c11138718c12142c3002ec0cfc8a522da9d17a7b80a935525cb4cec. 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/DGA062411889.
Duas Camisas / Roupa de Lua de Mel - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527ef6ffefe522d315b53224147130677d558b2c1202f06a3707ad1ee52a7111. 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/DGA062411890.
Bijuteria / Você não Sabe Amar / Por um Minuto - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cdc46d1a6945e3457b7cc4f23f3162c4e30109a49e35d89dc2a0df4aa0c9f5. 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/DGA062411891.
Assino com X / Do Outro Lado da Cidade - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95505b8d6bddf54a376f4c3c50e89811eb517d5bd93af1da2e8666dc5699dfde. 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/DGA062411892.
Brigas / Duas Vezes Você / Vai Por Mim / Hoje Eu Sei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da875643a6dcc24a1a8cdd29e3b198abcf945f756763d777a042c1d455de347. 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/DGA082456954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84516c69caee1869f7ca6a825ce6f9876dda0768cc2d010ea55bc6f1ef16a53a. 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/DGA082456955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571d6ca6bd85c5881823fa75fc7c28bec2c9fac9023f43bfeb3d4a58a719b993. 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/DGA082456956.
Frio da Madrugada / Mensagem Pra Ela / Você Vai ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75106419767cc16d8e2ab711c36da4a7e0e4ddb8b1fb69d39b9c6a5419429220. 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/DGA082456957.
Fruto Especial / Dama de Vermelho / Entre Lagrimas / Tenho Ciúmes de Tudo / Na Hora do Adeus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baced4b50d79f0a54c1206be078aabeba766df05c761bf229147c2f50504349. 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/DGA082456958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a74fad18bbf489b40933e90784e368607bab0547b48fb4e9d2382c5a7f3669f. 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/DGA082456959.