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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e77b29afc488fd1fca68698aa2093dfa62259ab1aba7d5e1e5638f7337bd249. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe9b28eb-8df2-4c6b-b2e2-984a5e49c04e.json and https://artists.proofprofile.net/proofs/artist/fe9b28eb-8df2-4c6b-b2e2-984a5e49c04e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).