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 0xf38c2fbfbca9b9a855c8dd445ba9b7d3c76c144b4f90421403728e3e4b828cae. 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/1eb3f602-89c3-4f08-887d-10db5533ef6c.json and https://artists.proofprofile.net/proofs/artist/1eb3f602-89c3-4f08-887d-10db5533ef6c.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 0x562ee2e4258fcb587e296556dd71b8b31d16c8cb87501fab2989cbd0d71abd12. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:09Z), 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/FR10S2177157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015b360bdeef7b501ac35b1bd1579a902b3dceea3f8de872406c8d341c91ed3e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62286564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74227f5a7c22cbc5bde7c8b773da07778fd961ec0a627eb16767e946dadd83e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US23A9400736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281e716398ced67b06dcff376484726f9b4aed532a7e0557461fef3836b7a870. 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/GBKQU2237588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbea5b8a13eec3d7c2c0bfb704f998722752dad3d6865570fd698149471b7b5e. 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/GBLV62023506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc724514ba4837a4f72c35a0a42bfe7bdab684e9e67f102587513daeff587ffaf. 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/GBKQU2137120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ac615542489d46f8eb69af6ddd9e9f97fadaf4a7a2b9b287c6126d83aa0822. 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/GBKQU2137121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e391626ad774921fde50880ecf0cd02f02c57368a8f1a2a25e2c8ff6d1a86c3. 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/NL1LE2102337.