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 0xa7814879637a5a884f106692625c2eb0dbfa02266a04dacda27878b78b504ff9. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86003d3b-1ab3-4878-b7bf-06c77d7aa8c3.json and https://artists.proofprofile.net/proofs/artist/86003d3b-1ab3-4878-b7bf-06c77d7aa8c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
An Evening in Nivram - A Tribute to the Shadows