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 0xab07653b7d121f126780542e5bf0646a62bc07517152659f6b85f0117da95e21. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3e95e91-52d1-4e24-8d22-7b2474314bc1.json and https://artists.proofprofile.net/proofs/artist/a3e95e91-52d1-4e24-8d22-7b2474314bc1.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 0x1b0c9fe4779c7c6182b404f008cd422000ce359bda57f4fa19b091b03b73c1bf. 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/BRD662400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe02d0c66f538019fc291529f9de57040b93d074f8413e96e448c6be547d79c3. 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/BRD662400010.
Festival Rootstock – Edição Especial Marinês a Rainha do Xaxado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5bfd9359668e30ac54622c40da86dc1c64b36bcb703e7b639823fb13c5c39a. 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/QZMZ92215474.
Estado de Poesia (Ao Vivo) (Deluxe Edition)
Da Taça / Onde Estará o Meu Amor / Diana - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186b1961afccf9d49a3c5b28f254e13b258688415611e441b7261f02a6eaab6. 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/BRC0H1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5efd127b7de313fcd979aca823c5281e45edf4c1f0341935597c01f604e5f9. 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/BRC0H1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c5f7abec16d8b90bb582fc20b8a9bfff39c9d6e9bc5a25e205545ce2d0ce5e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BRC0H1700028.
Atravessa-Me / Zazueira - Ao Vivo | Bônus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61660b785c0d9e77b089ed57d86972c31a0b7b700867ead7e3274fdee502748a. 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/BRC0H1800001.
Reis do Agronegócio - Ao Vivo | Bônus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd88dbdf79f261f6a58368aee2e3bab7f1ac8ccbbf742b52b87b680c8fae04c. 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/BRC0H1800002.
Mama África / Brilho de Beleza / Pra Não Dizer Que Não Falei das Flores - Ao Vivo | Bônus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e052b404374d0843c6cc89983b97bbc67864000b867620b3ea3eb16e7bc1ef. 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/BRC0H1800003.
Pensar Em Você / A Prosa Impúrpura do Caicó - Ao Vivo | Bônus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef1c3ac1fcf8b1b6e5433841a95261dace43792c4e37fe65841484180b9b190. 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/BRC0H1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7376d2f0ee3b7bd91b31f85058016e1576b72e4c37e5665e518c342cdac67495. 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/BRC0H1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5efd127b7de313fcd979aca823c5281e45edf4c1f0341935597c01f604e5f9. 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/BRC0H1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c5f7abec16d8b90bb582fc20b8a9bfff39c9d6e9bc5a25e205545ce2d0ce5e. 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/BRC0H1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69e73df6a38ecbae789096a270d1243128491dc54e1f4f4d430a9e8da2f6356. 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/BRDI70800280.