Haggar can refer to: a former district of Bahrain (historical region) Haggar Clothing, an American manufacturer of men's clothing. Douglas J. Haggar (born ca. 1947), real name of Mr. Whitekeys, Am
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 0xf9696b15939e825ae29d222630647e831caf788eba9acf517da0f45e23d633b5. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a2e47df-3c39-40cb-8183-ca47ccc125d8.json and https://artists.proofprofile.net/proofs/artist/3a2e47df-3c39-40cb-8183-ca47ccc125d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).