Sabri () is a masculine given name and a surname of Arabic origin. Notable people with the name include: Given name Sabri Ali (born 2000), Djiboutian football player Sabri Çakır (1955–2024), Turkis
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 0x7b8b0971bc508446a4ff7b97a41a759f1904568184966c9bc7800e2557b079e6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d833e72d-7f32-4865-8200-b872bfbc7e05.json and https://artists.proofprofile.net/proofs/artist/d833e72d-7f32-4865-8200-b872bfbc7e05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).