Danzi or D'Anzi is a surname. Notable people with the surname include: Francesca Lebrun, née Danzi (1756 – 1791), 18th-century a German singer and composer Franz Danzi (Franz Ignaz Danzi) (1763 – 1
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 0xca772bcfe1379d4456d63264d99eadc4fc215a5ea1ae5ce73cd1ae1346c88f53. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d33c6688-c586-4d93-9e51-3636014b0a6d.json and https://artists.proofprofile.net/proofs/artist/d33c6688-c586-4d93-9e51-3636014b0a6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).