Martin Fox (August 22, 1848 – September 28, 1907) was an American labor union leader. Biography Born in Cincinnati, Fox followed his father in becoming an iron molder. He learned the trade at an earl
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 0xd6a9efbfa7ff2be94a9c1a45c09dca144b0d050cfcc2d4f609090f21e43917a4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a1da32a-da85-42aa-845b-6edb63ccf7a8.json and https://artists.proofprofile.net/proofs/artist/7a1da32a-da85-42aa-845b-6edb63ccf7a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).