Jan Hedl (born 9 January 1957, in Prague), known as Jan Sahara Hedl or simply Sahara, is a Czech singer-songwriter. Among his well-known hits are "Dívka a noc" and "Tisíc jmen". In his childhood he p
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 0x3fcdd5e652dd0a600695859768317b37d8d306f2af737f715723b0f92afc467f. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22db6de9-93c8-4336-af7e-a60b95fcf12e.json and https://artists.proofprofile.net/proofs/artist/22db6de9-93c8-4336-af7e-a60b95fcf12e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).