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 0x0a60fa6521494e28db194a61fd7e933ad731eac12b3a7904a1c06cd61c152ed4. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/205fb7a9-6a11-44f4-8d33-e8dbfd4b6acd.json and https://artists.proofprofile.net/proofs/artist/205fb7a9-6a11-44f4-8d33-e8dbfd4b6acd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spirits Take Flight - Return to Saturn Remix