Lodovico Giustini (12 December 1685 – 7 February 1743) was an Italian composer and keyboard player of the late Baroque and early Classical eras. He was the first known composer ever to write music fo
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 0xc11741c0c38307891021899027765954741b522e17c5c6bcfa01f3f598d15d33. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12d0f2ed-e064-4a31-b6fb-2d6312f1cd92.json and https://artists.proofprofile.net/proofs/artist/12d0f2ed-e064-4a31-b6fb-2d6312f1cd92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Giustini: 12 Sonate da Cimbalo di Piano e Forte