right|thumb|The mounted archer represented the quintessential samurai. The were members of the professional warrior class in pre-industrial Japan, who served as retainers to the lords. These men came
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 0x47f9a9cde6e3c7ca787ade2de8e7d9d15a857ec1e77b5704c24299591dbb850b. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b6eb578-9619-4616-bcce-7d5effb6ee8c.json and https://artists.proofprofile.net/proofs/artist/3b6eb578-9619-4616-bcce-7d5effb6ee8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).