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 0x51ba80c02408e409b2b6e4f9c8e0254375ddbd24b98a4cedec7e70a0f19a8165. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a30b5709-5e21-4ed9-9952-d2b3bf070ba3.json and https://artists.proofprofile.net/proofs/artist/a30b5709-5e21-4ed9-9952-d2b3bf070ba3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Low Key Source, Vol. 4 - Mixed by Grooveman Spot