thumb|Cosmonaut Sergey Kud-Sverchkov practices using the TORU equipment in the Zvezda module on the International Space Station TORU (Tele-robotically Operated Rendezvous Unit, ) is a manual docking
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 0xac2889074a3860c97afa0b16f4c764b9b2b4109f8548fa3e4de898aaa2fee67c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d19f6de9-c60f-4142-8e6c-1cff2d992022.json and https://artists.proofprofile.net/proofs/artist/d19f6de9-c60f-4142-8e6c-1cff2d992022.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).