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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a53c625c7440a70b64553f77944e9d3718eb70c0e95c56bb9d259cfc1d7a03. 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/f5577933-7c77-4e72-b84e-4873f16968d1.json and https://artists.proofprofile.net/proofs/artist/f5577933-7c77-4e72-b84e-4873f16968d1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263d41863c4e99fa26b0f62726b31a82323a685eba5e5dabf03ee4cecf3a8830. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYBK11900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcae01b153b600932c04c6238c5f35012c87b6c9a41114a85fbaf285e7ea15d8. 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/MYMF32110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05c19d7228c1000c9440fda214a4728c4b9ea7b72d9456e7df214fb7a5f6499. 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/JPB602000765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf1580db62b96425a4625d8581ace14f1865bdd411fd20bcb8b6aeb350f7e75. 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/JPB602100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7debbb4093d0acbd3dc2abb22e4837ffc2f6fc086b8460ad2c74fc4d27f76c. 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/JPB602003309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea8c00987697e1d1fc7368f673c0fd2a7c49e754310a81ea58c1463e3c8c2e2. 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/MYBK12300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a1e7c3c5ba31ac81d7f4e068f68b665d2480f698cecef20ea5fb7f5834c406. 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/MYBK11900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a480255965e9ecd74dd2e6becd44c81e052541334193211c47edc0f6f1e7f14. 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/MYBK12000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263d41863c4e99fa26b0f62726b31a82323a685eba5e5dabf03ee4cecf3a8830. 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/MYBK11900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc95c4e2701a33c0b13f6916d9163544ae6af2e10ee3bfd5dff67c53dc99c3. 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/MYBK12000186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bece2937cd2fbfe9397b69a045be5b70d4aa8a8bfcc4c4db6c9314a23a8a56b. 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/MYBK12000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ae1cba2c794a49e4528854329a63c86159d528f6cd74edf599fcee689034bd. 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/MYBK11300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3119cbe7a98d4679732f74bcabbecd9696bbfeefd963fd77abfd1e7a8f04f82. 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/MYBK11300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a86056be04ff4d010d28d5949b5a22853d0a6a3198e0f3ad67e986cb7a8b79. 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/MYBK12300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcbd5743e7de0cedcb7b0ebe7578e48c7e1db358ec4af8d179c57f432c0d0ba. 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/MYBK12100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bece2937cd2fbfe9397b69a045be5b70d4aa8a8bfcc4c4db6c9314a23a8a56b. 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/MYBK12000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a480255965e9ecd74dd2e6becd44c81e052541334193211c47edc0f6f1e7f14. 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/MYBK12000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a1e7c3c5ba31ac81d7f4e068f68b665d2480f698cecef20ea5fb7f5834c406. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYBK11900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3119cbe7a98d4679732f74bcabbecd9696bbfeefd963fd77abfd1e7a8f04f82. 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/MYBK11300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea2118ae02589bceb3ade6ad16eba0be1bd55a686aae8bd4c720cac3161e2ed. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACM1692661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6257cb35589c1e8a8b549431a4ae66063d81a0618da597fe511ebb3cadf9a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB602204310.