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 0x9ba0b683278a0c825e6dd477c93d32abe231b33b2f4cd9da4534b6d2854aeb69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d56a4b7-64ac-4dfe-ab2a-fc961b3bb9a6.json and https://artists.proofprofile.net/proofs/artist/5d56a4b7-64ac-4dfe-ab2a-fc961b3bb9a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Elder Scrolls Castles (Original Game Soundtrack)