thumb|right|A toll-booth at Ouidah for the RNIE 1 thumb|right|The RNIE 3 south of Tanguiéta, and 50 km north of Natitingou in northwest Benin RNIE or the Route Nationale refers to the highway system i
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 0x95354f8a2740ec02cb531b09f8545e8dae34b42f69f9c9308d07ba82a5db7f6e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78755812-7689-421e-8fee-f0a60f4d8d4c.json and https://artists.proofprofile.net/proofs/artist/78755812-7689-421e-8fee-f0a60f4d8d4c.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 0x0c400c554a5a1ed8c10495e560646b8040a41687eee323f05bf4236f20cbccd8. 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/QZDA41958242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189acefbbe57c82f91edf0e245326e21e611e8d71c962f1d96d371116c1e8701. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P41801833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766d7de08be2d53f763ce7315fd6054ad3b947dea15aa442c3f54ab887f26d34. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QM6P41801834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83b86b51bdac8f8c712d97cb05d50effa938dc00208eb03bf3387bf6fa89dbf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6P41801836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf335e174e3fd270fb3d591315fd47ae25d47fafa43963246995b7af0ab4f3fb1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6P41801839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd440ed9db9cf2bf26a99423a1429bd3221c3a4cd4812e4d40f93d7d22790f487. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWT2015414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73e8acfcd9e0cd6d5ba64dec9108f54b414fb29eb399c1839bf1af07a93a1a. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZFP52156924.