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 0x025fcdb51d2e5756ba68d823576d8423b210a0e010e3d4c82cb5936b45c58fa7. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d3c87fa-4841-4383-bbfe-435a908ef9d4.json and https://artists.proofprofile.net/proofs/artist/1d3c87fa-4841-4383-bbfe-435a908ef9d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
An Evening in Nivram - A Tribute to the Shadows
Wave Walk'n: A Tribute to the Surf Raiders