Bogdan (Cyrillic: Богдан) is a Slavic masculine name that appears in the South Slavic languages and in Polish and Romanian. It is derived from the Slavic words Bog (Cyrillic: Бог), meaning 'god', and
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 0xd3da39dd5f21f347c8e89bad47c45aadd72b557fa456ea6dc4bd130f55df5da8. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6c668b0-d0a4-4694-80be-dcf61e78e3e1.json and https://artists.proofprofile.net/proofs/artist/a6c668b0-d0a4-4694-80be-dcf61e78e3e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).