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 0x42e22c210b8b2d5808b0982994fc01fe907bd96d9c1602ebd5324ba98e05dafd. 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/8630c40d-57f3-4450-9ac6-317af4d2b800.json and https://artists.proofprofile.net/proofs/artist/8630c40d-57f3-4450-9ac6-317af4d2b800.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Patrulha do Samba Ao Vivo em Salvador - Parte 1
Carnaval 2020 (Ao Vivo em Caravelas, BA)
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 0x26a0a09c69fb4cd5333e1a08d3464523f9597aa1e2fb861320c65c4c3001fe3a. 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/QZEQU2113862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1fa994766eea371cb3b1a04fb3a23c9507f9d4121945b6d58cc07f0ac17be9. 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/BROOB0200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84777f2e6ea79db035e20dd52b4c7fadfc2bd2da7d5c3a9a9868e584f8c230c5. 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/BROOB0200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f44467af4835f8e2747354f63ba8ff91d1fdafe13286dc8eeaf122cdeb8a54. 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/BROOB0200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b364472949baa00805e8b6277e0a23a59a67d09c201b1f952d5fb1177c54b. 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/BROOB0200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eee55b4f489f3b2f28c1dd5dcbe618ffc7e653cf2bac6162c392b9fe35e30f0. 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/QZEQU2113897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb88d60b948d1d1b7639f4529bda1095e7b1f7ecda10a3269ca6e798336cc45. 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/QZEQU2113898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09d250b5569381fc44f1711c202b1e378d110a553c368014f6277710cae519d. 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/QZEQU2113904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5a534d24f7435e675007a1a4da54799a06e97ba6e903eec8aefca32729e01e. 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/QZEQU2113909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbfb268d8487125f1685cfc9f78513277981cfa96234049a5e4f69e86b3c359. 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/QZEQU2113923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e0fa8ec70a22576ecdecb5491fd2292a10232ece0cfe823af79b92b753647. 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/BCRIZ2401404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76cbd02659ba70ef70bd81b66b0ace8ab6013fea86b3fbbf20b1a1822d2834. 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/BCRIZ2400593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480af2a7a4748fdea67928d9c581fff1e27a968869c74c69973c3e85aac489b0. 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/BCRIZ2400539.
Patrulha do Samba Ao Vivo em Salvador - Parte 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d27939960c58bd9b95cd748049d8938c7c1e1007d96bc3913b0117df4c9a069. 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/GBBFT0800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc936a1d1dc37f87e2ae838c4a500d1e76a3df40529cdebeb81990f69250a3de. 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/GBBFT0800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aafc2976e6a41418d976a46a868d2536c83dd90dec6d3e4a6243f7f970a1ae. 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/GBBFT0800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f7a977f22e02a564c91f3fe0fd3759a6c4f43bbd886e871e6a52f8e2e5c651. 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/GBBFT0800118.
Samba do Brasil (50 morceaux de pure samba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd1f44bef999cfe9c651c2dd4c3d057f354b7eb3393c2242ad7bb0ddda76dd2. 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/FR0W61472585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d9f6b379a49fd51430e944360145d1fe4c9d1b4a966a4dfec6d34e9b4aad68. 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/FR0W61472587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce344cfe41869531761e0b74429b45fc26a7f348d3ebda9a05d73fe0bfafd36. 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/FR0W61472588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc936a1d1dc37f87e2ae838c4a500d1e76a3df40529cdebeb81990f69250a3de. 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/GBBFT0800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1363393854b498c5fb00fece8e16b54d0f8c5974d0e79f082efcb7daa0f659c6. 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/FR0W61472598.
Tem Que Se Tirar da Cabeca o Que Nao Temos No Bolso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa311c0ac33dccae3def3954cb2c65666d86db83316a0634a5b0c6c6103556b26. 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/FR0W61472599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcca5a4582569365c97bb09ba2847bfe94ee63f5254ab020e12750da5855f0b. 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/FR0W61472603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f7a977f22e02a564c91f3fe0fd3759a6c4f43bbd886e871e6a52f8e2e5c651. 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/GBBFT0800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1fd0f9ef22b3c89df304cfd82bd3a1a0126cc315c9b6d7e74f7b31618821a. 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/FR0W61472607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f1d8f6db77e835ad7de6613f59e4d4221304a6cb8a496be2013a750defe25d. 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/FR0W61472612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1753d851d83114ee09dc910a41ddaa3e0c075ab60f4d689e70cf2ff21f770b. 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/FR0W61472622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ece923535259c709abf68b3c40ff7546f797594a8dc771e91d79f49fd8b68d. 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/QMVRR1100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1eaf61bdadcbb70b9e140a00c5d0d743e09b69af390abce94a15a2f35b1985. 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/ITR551317101.
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.
Samba Do Brasil (50 Tracks of Pure Samba)
Dansez la samba (Toutes les musiques des stars de la danse)
Brazil 2016: Chorro, Axe, Forro, Ska, Reggae