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 0x208442df1147c10fb07e4daff6248c236bbeb82fc1d7851e5e77a7fbc3e74fe3. 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/b94a8b73-84ad-4cf8-973a-3026d26c51ad.json and https://artists.proofprofile.net/proofs/artist/b94a8b73-84ad-4cf8-973a-3026d26c51ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Full Sevis (feat. Shabba & Michael Guirand)