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 0xa87253127a494cec9369aa828b963977e19900dca56e45c06d3f92fc931676b9. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/792f7d41-ea05-4c5b-a6b9-bbe74aa4b5ce.json and https://artists.proofprofile.net/proofs/artist/792f7d41-ea05-4c5b-a6b9-bbe74aa4b5ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coleções Porangareté, Vol.1: Feito Notícia Boa
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 0xde8d88e1195535a22c6b379693a4dcb7ffc80fe380343add7899743bf6bee120. 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/BRUM71301416.
Apenas Mais Uma De Amor - The Voice Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfe7e7de5200feff5a14154ea59f89181f4ae139841e7985e1fedc2fde97bb1. 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/BRUM71301448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fce377d83b20b33316a42a8425b28e737f9509b603d8ad4e1510e658ae5440. 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/BRUM71301456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c9ee23d7127eff8f417d3041034ea598dcc90a9df365af45e59ce893a615c1. 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/BRUM71301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c563fe2825dbd8b4ca39ff9c7d779c39d41b3ca3dcfc2ab155b65bba6c27aad. 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/BRUM71301445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2d26eccca14f39936917a05cd7d0d193365bc348aaa96a1d9fbe13091af16f. 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/BRUM71301455.
Ain't No Mountain High Enough - The Voice Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15725a6bcece949109dcded0c0bb01df054595f394a8dc33091f5433e78ddb2. 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/BRUM71301418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709fa5ec72e2cae0de73e8564d0e837d185b53428df7b771aae9f53581cbf633. 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/BRUM71301447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c00bf31ae39b6942fb8b43025f274224810b8c8e78589556c55e3a823b88ca. 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/BRUM71301457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba2e2b0e05070d4b75e822a0f4985cb555638709172074ee5b196ccd1f84613. 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/BRUM71301444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8079d4a579680abc340fd9d24efed73b9f30b0e88632cdff4617deb6c48c8eb. 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/BRUM71301449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdfeb7395f696ff7c8e56bef34674663f73a69893abfdf343dbf16a9a7ffac2. 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/BRUM71301422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88689e1e98903c9a3c3de3555af5965048615b69e7becb978a0711cae3a79b0c. 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/BXR1F1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944e059c20e37d6e3ded316c7b556143447508cd654478385e02506126a756f. 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/BXR1F1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7650e0925539d093bd00fae4b2dd63ba7e30a06794ffb0814cb54a7528f3eedf. 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/BXR1F1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ca4f30629f5fa050280023189e6a4cfa8752ad3049cb2fc2dc23018e44a8b7. 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/BXR1F1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05390a583309e5419d1a19863e8d0d3f9826d3d9b8dd6d30530e7ede4def8db. 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/BXR1F1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff26f0c4e98d0d998d84edbfd832eed7b2cf46577fbb852ba22d33db08d5c8ab. 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/BXSVC2000146.
Não Deixe pra Amanhã o Que Pode Deixar pra Lá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c5d786097592aa7cfbab5f04ba49ae4b6ed25088aed53d3cc81042c236fb0d. 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/US7VG1517065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751ff288db455eaba49c37c54ae62ab07438a8e3b68dd0443f4dc54dccea15b. 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/BXNT61902667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3f895df0294ae019a160277bfaf8cdc470f34f5b955935027ed5143c0f7ef8. 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/BXNT61902674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2988893c571e187659b5703efaec4778c49dc7705f91bb530f3008aade46c5ab. 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/BXNT61902675.
Juliana Linhares na Gira Geral (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d31cee1c5b2a2f62b3ece2430a83a29f53a504655484986ee4bed55cd4428ef. 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/BXJB52100013.