The Roommates is a 1973 American thriller film directed by Arthur Marks, starring Pat Woodell, Marki Bey, Roberta Collins, Laurie Rose, and Christina Hart. Plot Five young women named Beth, Brea, Car
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 0x8686e966f67f3f2882efa2732602f4bf5ef18ce53588b9f736d8e6e0cf4189b3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/615ca6a4-dccc-4f97-89ea-f089b0e0cdfb.json and https://artists.proofprofile.net/proofs/artist/615ca6a4-dccc-4f97-89ea-f089b0e0cdfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).