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 0x279a2a706c9ae49c03f3990a184053b2757dab80f0c86cde3132c22109674e6e. 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/b850098f-a5d0-4f57-a0a4-d0db9c01e5d9.json and https://artists.proofprofile.net/proofs/artist/b850098f-a5d0-4f57-a0a4-d0db9c01e5d9.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 0x7c8f2841a7be6eb6f33c32e6e4052f254145371e0b470360b7db6b6502f19cf7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLRD51964220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb737cd2b496f2410567d710b50f871fd1fdc9014eb36977496cf117d3fe093d1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLRD51964221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff5eec39d1ae6ef96914bcf4b28ef02a085e4cf7e799044b87288b1a4167735. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NLRD51964222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374fb177de1df31247a6b42208bdef799d6453495123793e9b5bcc3446356104. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLRD51964223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a7f32eb7fb370bf2eea155a87633cd12b12c0605d9a37bad4ca19a57606a4b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NLRD51964227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ab0f6401448752dd5eaa9046dc7e9f99bb0183c0fbedd0d6b26bcf97f2989. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZEQU1922953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc32aff8d7ceb6d64339972475c935d7bf60b379ac12dbd4f7dbe3491f1e263. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU1922954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7780f11515caea9d88fcbd92ebddee043a583c6375ed097409dd686d9a72cdc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NLRD52019213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1d459e5894c2158a4539c0d30bd4d8c5b558580abdb531983e06a5e76c5eca. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLRD52019214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3c959dae7c8bef929331c003088351d7fe75b580dbe27ce2d5187d5babfef5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLRD52019222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f51be66cce2a06065bb344748db487cde562107f18281cb6e1e06abae4813. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRTPP2400004.
A Felicidade (Mensagem de Amor) [Ao vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d483eaaff82f2328593c183b101dbf93f826ab0bf59e2a80979a2e40a548f2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BK7462400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc93a28ccc5f813a588006df787fdc1495f862f2662905f66dc5d1dea0d2f4c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK7462400004.
Pout-Pourri - Mulher Negra / Ginga e Expressão - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc740f525af78558cd963a7685a24590f10d35aa15a8044f93323dcca7a74b2f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BK7462400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77579915a16e7d6c96dfadc45417bbe2058dce9d225fcea1870a67913cbf86d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK7462400006.
Prefixo de Verão (feat. Luiz Caldas) - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c34aeff08db6498a833e13d78862a3ddae7c6f854297b869d43fc20ad9b68e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BK7462400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4fd8309125f15f73daf13faa153683d28a7473641fba06cb50481dc4c8bb5a. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/BK7462400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1470d55b2b6d85a6f2f7e6714fa600f431fba3a559a10d4dc884af235cfe7f93. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BK7462400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a12d0262e75027698118060c9272c28b671c36b9b8d34ec0f768a7b07f8d8a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BK7462400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bb37a33020a4f447f099cfb61d24231f660e4cb73d8a946ca402e346163d59. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BK7462400011.
Crença e Fé (feat. Daniela Mercury) [Ao vivo]
Crença e Fé (feat. Daniela Mercury) - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a4d715d4636950fb7a3ccb8d0af5f20bf8b2aa24f0a3742ba98e55b50e5366. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BK7462400012.
Pout-Pourri - Incenso do Índio / Amazônia - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a2d7d2402b5789ebb967d57a0f9e65aca71071cb0f6d3a801f4c63783d2a28. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BK7462500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7932103f7f0eb90eceb4c81760580810d4871d82e3ac08dfd5d4649d2b92def7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/BK7462500004.
Pout-Pourri - Tá Na Mulher / Ilê Pérola Negra - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3db49d7248ce1f05b174b4d20a3623e5119a74cb4d264c6eeda161bdbb6a5ec. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BK7462500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925d5f59b88766501606f858cd76ee86af8661000fe14a274dd1a66ae17d80f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/BK7462500006.
Pout-Pourri - Beija Flor / Mimar Você / Me Abraça / Selva Branca / Estrela Primeira - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52414f1b7fbd21ba8715b760d8d4f728bc579dc0923a28234bc5a51a0fc5b4a1. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/BK7462500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f601c6974c754eeaf830ec4facdbf1547067580f56f31df22c2aaee1be2836. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BK7462500008.
Pout-Pourri - Olodum Pra Balançar / Alegria Geral / Canto ao Pescador / Deusa do Amor / Rosa - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5c482ef9b65da943be6393801da9ed33a05900ba4051c6b3e354ef61dc8f0d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BK7462500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15a243e60a75de3bf8b297f33fe48581270a4ccb8d267e0834fe6e06e3eb9a7. 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/BRWMB1800481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dc9fcfef4b515baf0393a3ffaca2ff89035615624c28a694e390ffcd521676. 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/BRWMB1800349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ae97b79bad52102c243f53317d4d5e056435f92881c20a627cd98785a78ad1. 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/BRWMB1800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62af13a98462eb93a9aad1418fe3e1ab1268ca148fee14355d01be614a3055b. 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/BRWMB1800364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec123b2345f1ad75f9cb4b51a80522ed6f66484777a97346a58d3a27b47e483. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BRWMB1800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2610b8fe8925f526668b160e1d7230277702802d702b12457d459d2c0b97d29. 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/BRWMB1800375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b062ab13cca8bfac3ea2eb61b5502fc27fe8abd1085cd0fb11b2551d89f5ddb. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRWMB1800474.