, officially , was the title of the military rulers of Japan during most of the period spanning from 1185 to 1868.Spafford, D. "Emperor and Shogun, Pope and King: The Development of Japan's Warrior Ar
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 0x889f610814d092333eb1cd43ac89f2a5ece58542aa04e9014762132f00e27abf. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9144319-afc4-49dd-80dc-8771fed06c0d.json and https://artists.proofprofile.net/proofs/artist/b9144319-afc4-49dd-80dc-8771fed06c0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).