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 0xd6fd8092ae9a6110df15c017f78a3c4b4a4a21a4a42c6f890b9eef53fd558154. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd73af2a-f04d-4626-939e-724ca2cf7dd9.json and https://artists.proofprofile.net/proofs/artist/fd73af2a-f04d-4626-939e-724ca2cf7dd9.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 0xf9592306defa9f943b7681a2e0be7e8c6ba6353e64145d1e0a9069fecbeeabf7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USP3J1006140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f118b5554b9313bee1ccda40e7f962a66963fadd142d4f0b41878071178e206. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:59Z), 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/USP3J1006143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d13844b8c21a1be5f88196ea7e18d765d4c3d6efdc730ed99e8614508d26c8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USP3J1006146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9372350dcbc843a96631a5c30e8f2f11d170cb3a5d24afa80b1987ae2cc60930. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:54Z), 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/USP3J1006149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd29dd83181460248e260e3c54ba934f5f736065b358da7c3dd4f458d8913b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USP3J1006152.