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 0x9656274892a90eaab758693a6451960c66aa6aeb5c70b38830a88a3b913b3e8e. 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/f196a089-1cc9-4cb3-ae79-c97f2c52f81c.json and https://artists.proofprofile.net/proofs/artist/f196a089-1cc9-4cb3-ae79-c97f2c52f81c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moacyr Luz e Samba do Trabalhador - 10 Anos e Outros Sambas
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 0xf9ee4e067051fc3a5ad38e3f4236d5593ee28ad0b3c907dbd084fc4582e4174f. 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/BXRMZ1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61675411ac37035da61a7d452edf978c2771d8861752d76b7599c18d5486882. 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/BXRMZ1500010.
Samba Do Trabalhador (Ao Vivo No Bar Pirajá)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299ca2cdb6ab129a24449b3fa13a5a4f58157ddbb73029a45a9d0b800865e1d2. 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/BRUM71701345.
Meu Canto É Pra Valer - Ao Vivo No Bar Pirajá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3a0ab8eec4b0cd4b1c2b51e216ae49071198fa53f772fc63e13f62ce33a36d. 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/BRUM71701346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7fb4b5c9b45f9212ecd7fc8c40e69b1633281e38679c90e606f492d9e89be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRUM71701347.
Estranhou O Quê? - Ao Vivo No Bar Pirajá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8bdcf187d508771866f9daa834fa87d98bfe84691f5ac583e1c7c5667b8312. 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/BRUM71701348.
Vida Da Minha Vida - Ao Vivo No Bar Pirajá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391742cc08b4fa1999ebfc544dcab03155ae23b77ea4e22950fdf756ca5940ae. 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/BRUM71701349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b27e197e8b7db4ce680d809017296e022f81f0b2b2be203862f606ac8b45c1. 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/BRUM71701350.
Saudades Da Guanabara - Ao Vivo No Bar Pirajá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eefa5075ae294e40482cc0f89d0c046fe3e385b38b7136ee8d0999de2465a35. 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/BRUM71701351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7293fa756443a83324eac85e07fc04c69095ebaa199baddae4ea9643947bf4. 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/BRUM71701352.
Anjo Da Velha Guarda - Ao Vivo No Bar Pirajá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a26666da3f541f3bb31343fe1875bd2e8c3ec65a52d68399d4c6733cce1327. 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/BRUM71701353.
Amor, O Dono Do Meu Caminho - Ao Vivo No Bar Pirajá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4539eea1a196a9a9c28a092b98196202c5c53a38f0fdc9a4bf4a66c464cf1f33. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRUM71701354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35655327b5caa91e2608f7f62d3fb21b0d256f1d7e339dcb4328e9e3cfef62a2. 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/BRUM71701356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa676c5938eef023bc88f752da10ad7222c5dfd273ad4311937e4389be057cb87. 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/BRUM71701357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2caa44bf5109625e8a7d8056f336203c31de39f035e32e654948f16e026091. 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/BRUM71701358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2ee3287231d4a4b4fa2db9f1d3c074eeea53e32eb3968761bf5bebd4e69511. 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/BRPUI1900343.