thumb|A Danish print of The White Roses The White Roses (German:Die weißen Rosen) is a 1916 German silent film directed by Urban Gad and starring Asta Nielsen, Ernst Hofmann, Max Landa and Fred Immler
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 0x530f7a9a9a56a8a55bf59bd776468ea21acb5874b5102638878beb59ee1ced26. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d418547-555a-46c1-9c69-2cdbd6e4b906.json and https://artists.proofprofile.net/proofs/artist/9d418547-555a-46c1-9c69-2cdbd6e4b906.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).