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 0xc9546c97df0bc1dde8613a90f5710e8d01f5bf05c25ba9f423d0afe3c5d43a25. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54af8d41-bf5b-4391-bbe9-f516d0e3f80e.json and https://artists.proofprofile.net/proofs/artist/54af8d41-bf5b-4391-bbe9-f516d0e3f80e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hovhaness: Mountains And Rivers Without End; Prayer Of St. Gregory; Aria; Symphony No. 6 "Celestial Gate"