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 0xe3f1530df04a26f94610e8634a1b2d11f63ae3ebf178d2b36cbd66a00f63ffb0. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1086544e-711f-405d-9859-330eff844d96.json and https://artists.proofprofile.net/proofs/artist/1086544e-711f-405d-9859-330eff844d96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Becken II des Westhafens (Extended Version)
Becken II des Westhafens - Extended Version