Baby Doll is a 1956 American black comedy film directed by Elia Kazan and starring Carroll Baker, Karl Malden and Eli Wallach. It was produced by Kazan and Tennessee Williams, and adapted by Williams
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc176e34e3c035fd663499079c752add3fc00a4d92bea121cbf385408dcfd6815. 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/4c506fbe-37fb-45c7-a194-b2ce934a814d.json and https://artists.proofprofile.net/proofs/artist/4c506fbe-37fb-45c7-a194-b2ce934a814d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).