thumb|upright=1.3|Letícia Román in The Girl Who Knew Too Much (1963), considered by most critics to be the first film In Italian cinema, (; : ; from , ) is a genre that often contains slasher, thri
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 0x7dc5aa7be7ff017f1471e636fb4ded8bc45310eba5204e9ceec576c076fe7243. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88df1836-c9e9-46aa-99d7-c2dbfd95eae6.json and https://artists.proofprofile.net/proofs/artist/88df1836-c9e9-46aa-99d7-c2dbfd95eae6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).