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 0xea6428703d2450f553d1cfcc9e3dbce0dba576063db9d44bd644b813c31d5f32. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22e2fc77-7e80-407e-8272-f3fd4e522404.json and https://artists.proofprofile.net/proofs/artist/22e2fc77-7e80-407e-8272-f3fd4e522404.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
S.D.S =Zero= (Subscription Double Suicide)