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 0x485a93b0434c57128ddab3ba4f23a1e7d7a68160e29c6b106c3a7c4d92ba78b7. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e8e310a-a022-4d41-b05a-1e1006f08559.json and https://artists.proofprofile.net/proofs/artist/2e8e310a-a022-4d41-b05a-1e1006f08559.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).