Andrei, Andrey, or Andrej (in Cyrillic script: Андрэй, Андрей, or Андреј) is a form of Andreas/Ἀνδρέας in Slavic languages and Romanian. People with the name include: Andrei of Polotsk (–1399), Lithu
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 0x36f84b8e667bc081b10617dad339f2884347b29bb45d8ff868049714937c6631. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5cf6694-c45f-4399-973a-7563b7b86770.json and https://artists.proofprofile.net/proofs/artist/f5cf6694-c45f-4399-973a-7563b7b86770.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).