Tiezzi is an Italian surname. Notable people with the surname include: Andrea Tiezzi (born 1964), Argentine tennis player Augusto Tiezzi (1910–1990), Italian cinematographer Clara Tiezzi (born 199
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 0x552a10ea8c208af766b9a019cf137c6778890395f9b54f51bc0af7a012b94018. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4573f3b4-5238-4852-a63c-90a0175a0a12.json and https://artists.proofprofile.net/proofs/artist/4573f3b4-5238-4852-a63c-90a0175a0a12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).