GQ (short for Gentlemen's Quarterly and previously known as Apparel Arts) is an international monthly men's fashion magazine based in New York City and founded in 1931. The publication focuses on fash
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 0x4c56aad28a35cb81e2274183d18c9b6e49d2037eb89a7f4cdd78c24d41993e7a. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96f5bd57-3daf-4390-806c-287ad45fcfeb.json and https://artists.proofprofile.net/proofs/artist/96f5bd57-3daf-4390-806c-287ad45fcfeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).