Xime is a 1994 Bissau-Guinean drama film directed by Sana Na N'Hada. Plot In the early 1960s, in the village of Xime in Guinea-Bissau, Iala, the father of Raul and Bedan, is worried about his two son
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 0xdc38624de48ed95a8392dba6ce4a41ca33e16d71a0abe780e5234c2b5fa42a73. 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/4b99716c-3e47-4aec-993f-b971075a658a.json and https://artists.proofprofile.net/proofs/artist/4b99716c-3e47-4aec-993f-b971075a658a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).