thumb|right|Pair of AC&E 120 Ω twisted pair (Krone IDC) to 75Ω coaxial cable balun transformers. Actual length is about . A balun (from "balanced to unbalanced", originally, but now derived from "ba
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 0xed8b20af5b161ab57d707d6a07759ff6f8624e5df79a16c695084b1cddbf7d26. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e4ab124-7e28-4121-b912-48e37816c26f.json and https://artists.proofprofile.net/proofs/artist/8e4ab124-7e28-4121-b912-48e37816c26f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).