François Pinel (Paris, c. 1624 - 18 May 1709) was a French lutenist and theorbo player. His brother Germain Pinel, at least twenty years his elder, was himself a lutenist, like several other members
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 0xf0c4e9bff1ffb37515a4a398ecc6a94ef1bd1f1e3ef7b372b1c909025850f7bb. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa4fbef2-c8a8-45d1-b646-0c65c9a1018e.json and https://artists.proofprofile.net/proofs/artist/aa4fbef2-c8a8-45d1-b646-0c65c9a1018e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).