Joseph Edward Humphreys (October 17, 1872 – July 10, 1936) was an American boxing official and announcer. He was one of the most popular fight announcers from the turn of the 20th century up until the
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 0xd2cd803261a459d2ce3f96bf0e1d9422750ef828ad4208955eaa2ad5d2e5aea4. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebef2f41-8925-4a08-81b1-938c966b28e8.json and https://artists.proofprofile.net/proofs/artist/ebef2f41-8925-4a08-81b1-938c966b28e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).