thumb|Rice cake or thumb|Rice cake thumb|Fresh being pounded Mochi ( ; Japanese ) is a Japanese rice cake made of , a short-grain japonica glutinous rice, and sometimes other ingredients such as
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 0x4143df8ae1e05d35534f68da4ae2c52fe4ce8bed6313ab65840009eecfe8a9b7. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05ac2c9b-0bb8-4a64-9119-cd59cccc6f01.json and https://artists.proofprofile.net/proofs/artist/05ac2c9b-0bb8-4a64-9119-cd59cccc6f01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).