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 0xcd2cee26b464f6cb89449a351bac9eac94ec1cb4a6ed14d5b9d6b8906ddedd75. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5ce68bd-c8be-4a1b-a1c2-0066b42db582.json and https://artists.proofprofile.net/proofs/artist/a5ce68bd-c8be-4a1b-a1c2-0066b42db582.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Woodland Critters 2 (Compiled by Steven WooDog)
Sangoma Sound System II (Compiled by Daksinamurti & Emiel)