Ichi, the number one in Japanese numerals Ichi (film), a 2008 Japanese film Ichi (scarification), a type of facial scarring traditionally used by the Igbo people of West Africa Ichi, Iran, a village i
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 0x09c3fea1c5829b92bc4420d93f8f6c23d36ba738773276bd53e71c135f637092. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b28a68d8-e7c4-42ae-8a33-b8f54434a623.json and https://artists.proofprofile.net/proofs/artist/b28a68d8-e7c4-42ae-8a33-b8f54434a623.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).