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 0xb84d8e88dc1a3a4de8d9a1328203c3c0a0ad2a0e08d7bc13d9ad9929afb7a99f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edcf4e7c-8746-4980-b53b-b8240929d62c.json and https://artists.proofprofile.net/proofs/artist/edcf4e7c-8746-4980-b53b-b8240929d62c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).