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 0x906bed8fb7181504d29c602dcf183d530c63392c7e1a9075a02d3ffdaa0be8f9. Chain 2 (Bitcoin): anchored in block 953943 (2026-06-16T11:59:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/214a264b-a320-4ee6-9046-35ea0bad4776.json and https://artists.proofprofile.net/proofs/artist/214a264b-a320-4ee6-9046-35ea0bad4776.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Roommate [A dark and twisty psychological thriller with an ending you won't forget (Unabridged)]