Doll Face is a 1945 American film released by 20th Century Fox and directed by Lewis Seiler starring Vivian Blaine as "Doll Face" Carroll. It also stars actor Dennis O'Keefe and singers Carmen Miranda
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 0xabf46ab03cb3da85c0fe5c9022883b0c3883db161081f626973b5e5797b1238e. 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/48e97457-c8a5-4d21-ab2d-3ef523eef170.json and https://artists.proofprofile.net/proofs/artist/48e97457-c8a5-4d21-ab2d-3ef523eef170.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).