thumb|upright|Henry Fuseli, Virtue reclaiming Youth from the arms of Vice, 1806–1807 A vice is a practice, behaviour, habit or item generally considered morally wrong in the associated society. In mo
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 0xbac64abb99d780da4696f34ec9e20029da30b23cb4a59ac2c019e840dd1280ec. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0418f03-7d32-45a3-9f08-f1828a7079fc.json and https://artists.proofprofile.net/proofs/artist/d0418f03-7d32-45a3-9f08-f1828a7079fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).