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 0x188c7a2aa40f9c71d1710efae6580de513e4d0d6580a8a4940b42c7d519ed2fb. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90e7d52d-06b4-41ca-ac4e-e9622b4cefe0.json and https://artists.proofprofile.net/proofs/artist/90e7d52d-06b4-41ca-ac4e-e9622b4cefe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lost in Paradise / A Smile Through Sadness