1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb9d0682297eb61f2b05ece1feaf81c99effe5d4609e787e6ce8c6980c5ef6673. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16fa2a20-3f91-46c7-ac2c-dcc86644aa8f.json and https://artists.proofprofile.net/proofs/artist/16fa2a20-3f91-46c7-ac2c-dcc86644aa8f.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 → block OTSBitcoinBlock must exist at that height 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 0x1c3a1b1e05e69e113b651fa8e9e3e33da44be8ff5284bc7ed0813135431428c1. 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/BXRCL1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd905d63c79e9f44ad34fe1de07541f2f07d914bcf3d8ec45616a55023a551c3. 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/BXRCL1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caf6288b0eaf7a71bdb934276b6773aaf396ea5115cd98c88fcbf9022c5d6ff. 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/BXRCL1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc59f75a85d00d0f321c083aa384b690b037d3e1f7156ffd03f67f5806f5bc. 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/BXRCL1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07add3f4c969bf26d4d7ad50ec0e843d644e6df5ae62b111a13b22ab139da5dd. 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/BXRCL1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8ad0a1f40155e1e413cb961f6bcdd96524827d6df3b7dad4dd9ec953f667c4. 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/BXRCL1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d0181dda187b434d6e06dd2f943f486dad7c9cf92449b13b6b43f76c21f868. 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/BXRCL1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbe66a42914e27deb8c099591f19390479e8ae0becb543eb0ce4a6f854947f6. 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/BXRCL1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b7ef01cb90252c2e7aa3b6d443e2821eda84d73edd7c3485b22cc3ab349fab. 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/BXRCL1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbfb3cd52d0e369fcfe23d9dfb98d0ad66051fd58e74437b91a2f79379539cb. 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/BXRCL1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230840826609e93cbfe1b54c6ac1daa25606f7aad4ecd266fabe391e626c8f10. 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/BXRCL1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d97a313908494f9972a0145cf8cf4e787620b758c90a167e4e5a9c6dd4d1c22. 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/BXRCL1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1246734a9a69d59598407645ceb4ce0acc7a3a78d4d7a898061233b249631182. 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/BXRCL1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c8b8df4966046a80bd4c35f5e0ff28a456977a93bd7c960052b794ab39fb07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX9GQ2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2b4e3abd206b61ba9bebc469175018d525be3d7fd1d864d85737087ff21121. 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/BX9GQ2000040.