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 0xc67a9d3124c05f9e230026595cf1c4a4b23551414229cdeacc901dc6212d80a5. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/207c4441-2cd0-49b7-9b14-cc35a528f8d8.json and https://artists.proofprofile.net/proofs/artist/207c4441-2cd0-49b7-9b14-cc35a528f8d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sound the Alarm, Vol. 1: Louder Feelings