Ilona is a feminine given name used primarily in Hungary and Finland, as well as in other parts of Central and Eastern Europe. The name Ilona is the Hungarian form of the Greek name Helenē (Ἑλένη), w
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 0x15bac17fdfe0ede8526c7f16fafefb6d08e1d254b1b8b9ec41a3f580b96bb9ed. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16746ef5-ca54-4274-9cf1-097cec0c855d.json and https://artists.proofprofile.net/proofs/artist/16746ef5-ca54-4274-9cf1-097cec0c855d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).