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 0x7d2e1dc686a57e470c2b731abecbadaaeb7e35d95cd2c2ea33ecc44982297203. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79703cff-b9ae-43b8-bc8e-16998009b52c.json and https://artists.proofprofile.net/proofs/artist/79703cff-b9ae-43b8-bc8e-16998009b52c.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 0x6ae61d408ec8da4d760af318ed927d3c8374d6b5252be26b1eb2cc3831dd38f5. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BRAPI0302186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c20f192557e8750215177637b95b92d03a197743b900504e57faea660a57d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI0302189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826c042372b6bd2314acf032846907f24f5725b2125af6cf8f97d3ae3fd3fbc3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BRAPI0302191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab2c0488ba62def480ea8908c0a61462d2de6dca7f12b96887a08af82704834. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI0302194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b4f6ddfd4b87061a9ccdf1bbdcad802a7f38e28542ba182985cd65de860dd0. 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/BRAPI0302196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e1c0e2008d608eaa6a0120d9cf2fcc1d709694af1b618e2bab661c240887c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRAPI0302197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdbfcfa43e7547b3ad8fa7aaf77b2a98f8b0885997b9ea142e387224102c3a2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BRAPI0100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e1c0e2008d608eaa6a0120d9cf2fcc1d709694af1b618e2bab661c240887c1. 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/BRAPI0302197.
Já É Carnaval (Lambada da Delícia) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5d45f576feea7bd45b6b98f46a198a198138ae70c15ae58f6b9823157418b6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI0100785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cef9cd2796712e2b4ee11f04db3697a090ed1baeae7687940e01ecd488a74f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BRAPI0701991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7feb2371b004407e9acfe978e3ead715e402b4336fc0b5ce1b5e36cb7f070ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI0900707.
Pot-Pourri: Swing do Negão / Tá Gostoso / Fonte de Inspiração
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae985c6b323526af98a036061b8a4aa858cd0ee42f614a0066eedf8ff09b14d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BRAPI0601716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044b8644e2f62874060698b93e3eda05a6c3c4f423fa5c8802ca83b153c18506. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BRAPI0100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebd18ba73c742d859f4ae8efb1f68d880d5ddf5e6926e32f7f7ae623ba21bbb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI0702000.
Pot-Pourri: Carimbó do Macaco / Sinhá Pureza / Sirimbó do Vovô - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b094004ea73ee80186d2801c2de4ee39a7070a6e3c5eaa59e31d3ecb497505f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRAPI0100783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20326ef8feb5c3a8f95972da87accec5bb7a1141d4ddf3293a70027b5bd66945. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04af8f62cce609d85c386fc92918142b7eca9f3621efb56e6e9d0273fa62b528. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMFMG1591031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5882d344c611099b8aee41800e146c642ce5aa547b649b817d1468add2575d51. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BRAPI0100677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa701370833bf51c6b408fb11e6e030e43821a910071612a5930c346d255886. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BRAPI0302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569e02bd64f7493dbac089735dfae5562a5c49c72c84923069c4e939a3ca75ab. 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/BRAPI0701993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bcfe566c7600c228ff638d0aa7a1d9d0eeac3cd25d9948f5415f1c92d908ed. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRAPI0900712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d04d699419de354c22d5ce3492a0504b540ff52c0738bae58282b528d4e39e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRAPI0100787.