thumb|Madame Minna Craucher (right), a Finnish socialite and spy, with her chauffeur Boris Wolkowski (left) in 1930s Espionage, spying, or intelligence gathering, as a subfield of the intelligence fi
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 0x0250b7f851065dd5683870d3e789663b32ca8c3f0262165a1eedde2f18492878. 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/90e1342f-760e-485b-b957-a61fd3faef00.json and https://artists.proofprofile.net/proofs/artist/90e1342f-760e-485b-b957-a61fd3faef00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).