Marco Tezza (born 1964 in Vicenza) is an Italian pianist. Biography After a degree with honors in piano (1984), Tezza studied with Carlo Mazzoli, Jörg Demus, György Sándor, Bruno Canino and with Aq
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 0x55d1641628c4af41430456ebb6de1ff3796b9be253ffe3139ea3b26780c930ae. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ae22353-745f-4c1d-8a61-f09f068f0989.json and https://artists.proofprofile.net/proofs/artist/9ae22353-745f-4c1d-8a61-f09f068f0989.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).