Hanzel is a surname and a given name. Notable people with the name include: Surname Ľuboš Hanzel (born 1987), Slovak footballer Łukasz Hanzel (born 1986), Polish footballer Milan Hanzel (1994–1994
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 0x26871ba8e4eb2b9456dc33a1e8d1bd00a78e5636e5c4e0a8a123d4e1b5e002fc. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0be12e80-ae64-43fa-b3c5-6157682e49da.json and https://artists.proofprofile.net/proofs/artist/0be12e80-ae64-43fa-b3c5-6157682e49da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).