thumb|upright|Bernardo Pasquini Bernardo Pasquini (7 December 1637 – 21 November 1710) was an Italian composer of operas, oratorios, cantatas and keyboard music. A renowned virtuoso keyboard player, h
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 0xd7973ff87f158c0d527c20e2ec33de192703f816665c1f97ad93f278962d8e86. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1ede50c-2e55-411e-8c91-d14a84467781.json and https://artists.proofprofile.net/proofs/artist/e1ede50c-2e55-411e-8c91-d14a84467781.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Giuseppe De Luca: Golden Jubilee Concert
Pasquini : Docendo Discitur (Organo Fratti Sala dei Concerti, Accademia Internazionale di Smarano - Trento, Italia, 2009)