thumb|Koi in Japan thumb|Several koi swim around in a pond in Japan (video). thumb|A school of koi containing multiple different varieties , or more specifically , are colored varieties of carp (Cypr
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xdbd3bef6ea7c0a1f4b602e207892c3e556a983e1e83f5e8b42babc29737fa724. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f5dcbb3-acb2-4419-837e-a9b9c300d8bc.json and https://artists.proofprofile.net/proofs/artist/3f5dcbb3-acb2-4419-837e-a9b9c300d8bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).