thumb|OFUNAM. The Orquesta Filarmónica de la UNAM (National Autonomous University of Mexico's Philharmonic Orchestra, also known as OFUNAM) was founded in 1936 and is the oldest symphonic group in Me
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 0x5efb95f327849e2ee3008910581baa785efc205e755f9598883eafda982d7663. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4767ff57-5ce8-4ca4-8d19-9083f575e373.json and https://artists.proofprofile.net/proofs/artist/4767ff57-5ce8-4ca4-8d19-9083f575e373.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).