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 0x34eda73cc9373b844248c1b9e28c2a8176bfd5b93812c82e44c6ff75cb84ecb0. 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/2a25d72d-60cd-47ff-b402-aabd00074c60.json and https://artists.proofprofile.net/proofs/artist/2a25d72d-60cd-47ff-b402-aabd00074c60.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 0x42260d7d6bd0bbe3db793e41b5bb98cbf219fcf435e686a9d889e113ee021542. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAER2074035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce395987a262b0d4e88442795710ff14e6799f8d0898eedb9cd0b5b65a5f2ca6. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:06:10Z), 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/TCAER2074055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c0c307589b0b29bfdaea5caa5f1c21b4f0320f9c152ab88b3ff7651c11d9ce. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:11:00Z), 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/TCAER2074066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c0e32fa566c6bd88bf8b5f6a9ec66408028422f7fa1907f15ebb807ffbf2fe. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCAER2074461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9216cbf450bdaf6e2adece31d582d4b135d12522bc9e4917ce47fceac24b0608. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADY1831193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c93f2dd9acba64d1a1af53ff57cc8957147bcda06a065b4cc4d83e09726016f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADY1831205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beb946dd7e065f1c958f7c574fd6008976747a90fc3f72487bf792f41e69240. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCADY1831241.