thumb|Pietro Paulo Bencini, caricature by Pier Leone Ghezzi, 1734 Pietro Paolo Bencini (c. 1670 – 6 July 1755) was an Italian Baroque composer and Kapellmeister. He was the father of Antonio Bencini
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2129a61cdec614f3ffa6a254335df5d81d6e839ae144ad6c98549c81f4acac. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5858cbf-8455-47b4-9c1f-3983d2e970b0.json and https://artists.proofprofile.net/proofs/artist/c5858cbf-8455-47b4-9c1f-3983d2e970b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bencini: Vesparae Beate Virginis in Sancto Petro Romae