Yannis, Yiannis, or Giannis ( ; ) is a common Greek given name, a variant of John (Hebrew) meaning "God is gracious." In formal Greek (e.g. all government documents and birth certificates) the name e
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9b9276b5c91c55a1ccfdda73328d3420e19cb141f8a2efa1e1cafe7cb9b6aa. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2f8fcee-2b03-4682-b3a5-84ce327f8c9e.json and https://artists.proofprofile.net/proofs/artist/b2f8fcee-2b03-4682-b3a5-84ce327f8c9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).