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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f3386b8c9c1ccd2c1aee4372cbdd12ccc12060a2db2f32285ae184f3d49c8d. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89ced8b6-c398-4902-8996-3f4be2d5b41e.json and https://artists.proofprofile.net/proofs/artist/89ced8b6-c398-4902-8996-3f4be2d5b41e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).