Mazzo may refer to: Mazzo di Valtellina, Italian commune in Piedmont Mazzo (surname), Italian surname See also Mazza (disambiguation) Mazo (disambiguation)
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 0xbd8b69141a3c8346c1df031136985b46e7abb40841ee6dae67dd1e326790894e. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf3fd635-67d9-4369-a895-009e5711f510.json and https://artists.proofprofile.net/proofs/artist/cf3fd635-67d9-4369-a895-009e5711f510.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).