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 0xef6b2c2ae98feab3b058201ed3d5cff6f385620ea1427227ff936b34b6297f75. 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/bc1d9e7c-a70a-4130-869b-b71088032587.json and https://artists.proofprofile.net/proofs/artist/bc1d9e7c-a70a-4130-869b-b71088032587.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 0x7d2310a74dff46c9dc29dcd03874e59806f077d099c9d33d843aac564548da01. 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/BR03D2200798.
Kindala! Que o amanhã não seja só um ontem com um novo nome
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866004a887f417ccaf9f9b26c32b05553c62b879fcefc293e05439007ee7b51. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR03D2200565.
Sambas de Enredo: Carnaval SP 2022, Especial, Acesso e Acesso II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83b3a9e5dd04ea5e5c1e22980f90c02f2b6ad7037eb8cc9d1c24476b4e7a04f. 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/BRLIE2100007.
Sambas de Enredo Carnaval São Paulo 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3886e1966fb7f33b17823204b4e04ce85ddcb9234445f25999e9133d52879c7. 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/BRLIE1900003.
Sambas de Enredo: Carnaval SP 2020, Especial e Acesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3886e1966fb7f33b17823204b4e04ce85ddcb9234445f25999e9133d52879c7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRLIE1900003.
Pelas estradas da vida, sonhos e aventuras de um herói brasileiro
Sambas de Enredo Carnaval de São Paulo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcaec2779fe96658062788b42cbdc12901c290bfc3514537eb045d1351be18c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:57:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRLIE1700005.
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
Sambas de Enredo Carnaval de São Paulo 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaeafea9fc028fefc9a07dab47ca94fdb1803911e210a9d0935b25e01cbfc35. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BRLIE1800008.
Sambas Enredo das Campeãs - Liga Carnaval SP 1987 a 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c3a764f9ccd5c3e31e78153e1109640ef792efa3205709626d4fb299aed25. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BR03D2300055.