Salvatore Quasimodo (; 20 August 1901 – 14 June 1968) was an Italian poet and translator, awarded the 1959 Nobel Prize in Literature "for his lyrical poetry, which with classical fire expresses the tr
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 0xb6f0b1e02944c6ed55407ed7f36626d7b85b8d0b8b00bc364a3550b515f64c4b. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/368354fb-2ff4-4604-8c8a-68e913ef9d2d.json and https://artists.proofprofile.net/proofs/artist/368354fb-2ff4-4604-8c8a-68e913ef9d2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).