Franzl or Fränzl is both a given name and surname. Notable people with the name include: Fränzl family of musicians Ferdinand Fränzl, German violinist, composer, and conductor Ferdinand Rudolph Fränz
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 0x3ca6d908a39b575dd9e014fdcf56eecd0cbaa466a267561a75c639c6e6abfb78. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4994c5ce-a0c4-47b9-8193-bd639befdc55.json and https://artists.proofprofile.net/proofs/artist/4994c5ce-a0c4-47b9-8193-bd639befdc55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).