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 0x1e16b52b33a59fd7ef1df977618ea435074784e945c5cdf894f0464a1127ac63. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/593ac67f-ef3a-4b2c-97b4-aa8ddd71d95e.json and https://artists.proofprofile.net/proofs/artist/593ac67f-ef3a-4b2c-97b4-aa8ddd71d95e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).