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 0x738b1fea1372f66e75b44a132dada6b7f48d70f60e119dab1f974f5cb8498efe. 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/d26e3e1e-96fc-4bf3-bd13-a8df4a1232d7.json and https://artists.proofprofile.net/proofs/artist/d26e3e1e-96fc-4bf3-bd13-a8df4a1232d7.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 0xc23e28e8e5000dcb0369e27be9ac1be5f6eda392c2949e82d693b499960d22ab. 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/BX9B52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1495a578907bd18768487cb0287feaf2e8ccc60ed795b8306824ee2d22ce1cff. 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/BX9B52200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf242f13c43fb4ccaa5cf48265ae2e0d0212da781df2af8c733f09390b8e9d8d. 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/BX9B52200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c862d50dde0953382484264b7fd7ef74f9c374d223e000e905d948f7d53b3. 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/BX9B52200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d71ace230a2630924c8d2d3f0d41b62465bce8a6684bf66c7670a2fd0dbec. 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/BRSME1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e85fffffaf46e1875d9ede7dda6c637f4b55267a376231d70e8422c64ba465e. 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/BRSME1800417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27d87d0cfbe8dabc35eb0e39f8d619c6f8aa6bacb146eb23118a573139025bf. 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/BRSME1800418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac08a4b03b314bf3ba6187ce5dc84702a51f0e1d1df91f18dce80da64a4268f6. 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/BRSME1800419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a17d9904deff9d2aa36f31bb3e32617086b6c66632de1a05df54c87663d4263. 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/BRSME1800423.
Catuaba (feat. Gloria Groove) - Ruxell Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2a43b7fca580911c39ce79977b9698e3c3ed8dd78be8b80ff6e4eaac1afaed. 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/BRSME1800425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7b2e42ba262287e094dd338f9c3159e972539198bddab712be9122b062cfa4. 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/BX9B52300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c875d2947d57238b283766c406da23bd486aba3204417012aaa55a791041019. 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/BR9O72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a72cd07c52690e9fa7446cc3df5f51187ac44496fe001dfdab700bec2bb183c. 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/BX9B52100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390e19a725bd451cc3df2f0badc2317029c22a014f682c79c80f9b82c77ad986. 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/BRD1E2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27d87d0cfbe8dabc35eb0e39f8d619c6f8aa6bacb146eb23118a573139025bf. 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/BRSME1800418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c10021f8f4ac10bb20faf226383bceeadc4f2b6dd4b5a69bcbf765b8054bd5. 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/BRSME1800930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac08a4b03b314bf3ba6187ce5dc84702a51f0e1d1df91f18dce80da64a4268f6. 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/BRSME1800419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d71ace230a2630924c8d2d3f0d41b62465bce8a6684bf66c7670a2fd0dbec. 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/BRSME1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0744bc53c58c6b1da234ed715398cd3ff47f04cf369691643c0cf70b8f494bda. 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/US7VG1769183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3fa933938915d0e667829348ce9d814f91b13b69a00eb6bb8b2e1dfaaf1313. 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/QZ5AB1634847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde620f2768ee3762ea48289583dd079c26f23da0600e4f37984b020e3cc1fa4. 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/BRX6F1800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8824ed83764203fc8511ae21d3ac86baa105a0c2f472cca21f27c1d113a2bd7. 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/BX9B52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e46cfc09372ca430f6475eac7ec25c32f74fe16a50f8f15ed38c23b7412f07. 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/BX9B52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d71ace230a2630924c8d2d3f0d41b62465bce8a6684bf66c7670a2fd0dbec. 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/BRSME1800020.