The Jackals is a 1967 DeLuxe Color Western film released by 20th Century-Fox and filmed at Killarney Film Studios in South Africa. A remake of 1948's Yellow Sky, it stars Vincent Price as a South Afri
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 0xfd99d29e37a60a62afb1d0be6a0b4b60e52c757188ef874ad1f8e08e9584c501. 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/4a4ccf6b-60a8-4fbb-9a11-556a820bd79a.json and https://artists.proofprofile.net/proofs/artist/4a4ccf6b-60a8-4fbb-9a11-556a820bd79a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).