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 0xeafbf5a7fc0c6432b998d12a0d7b2a8c8d617358c0d493f0205f61396ec0fdd7. 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/609e1857-5d6a-4661-8815-a9501f343d98.json and https://artists.proofprofile.net/proofs/artist/609e1857-5d6a-4661-8815-a9501f343d98.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 0x1c2c2758c939ffddf68472b7e3d19fa32c4c589a1316dd181f5eda97091cc10a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX872322592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1b92a9fbc5cc8ec42ef74c08dd4289d069bd92cb26834329ab636209f98cb1. 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/AUNCC2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4481c5876fc5187afd3de3ca3c5cdfcdf885a8d0120d6c69488145dc61402. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUNCC2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6efc4136fbe4c883c7cd5f7259f2310c1f7925e6ef38c417287119bc5ff8739. 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/AUNCC2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193153c7f824e63e7d65c0aa364f2177acd2475e416cd1fed78d5d2f77b0f1f4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUNCC2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4481c5876fc5187afd3de3ca3c5cdfcdf885a8d0120d6c69488145dc61402. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUNCC2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4481c5876fc5187afd3de3ca3c5cdfcdf885a8d0120d6c69488145dc61402. 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/AUNCC2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18745ef963b9bc614fab4a29161477608ce429983d92c52834b4470ac2e70ca5. 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/TCAEF1992759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302b08a5397b88906505fb0eba7a61f0ae80eabdbdea182dc9b0ff8765de27b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/AUNCC2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadc1398563157e4521c2c0b4fa24978f557afb6b9e0999e3250d5657b59df7d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUNCC2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18745ef963b9bc614fab4a29161477608ce429983d92c52834b4470ac2e70ca5. 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/TCAEF1992759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5900137c081089b746a3af5e96d0bbf74130535de434203823c80692b072fea2. 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/GBSMU5571910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d04916b8fd085aff14f1b49c9f55c598ff2ab4465cbef8967eb5d6bf5f26235. 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/GBSMU5684091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f1dec32ff250d14e7b52f69491db7049199d4cbe8cdc7cb090ef818e8404d. 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/GBSMU4164612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b357fc30ebdf378423cf202ed0fb7b8c8bfaeb2307ef75d61632a50e9b895c0. 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/GBSMU2948761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b13403ceb4ac47ba952a0528ece41fa3f6967fbda4adbbbc68b35bf9701de. 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/GBSMU2948762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcae0ba877eba39583509198115187dba1f643b17732c85c75cf3037c10b59b. 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/GBSMU2948763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ade1a83b67daabbaf764f9c349c5f2a889e1e52444f2d2b3dff7c1a9a346055. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBSMU2948765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5452d6e5d1ca8401623cc767217eaa7eb77452304122db92a3ae121dbc8a9971. 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/GBSMU2948766.