thumb|300px|Yoko Misumi with cellist Stjepan Hauser is a Japanese classical pianist. Misumi was born in Kyoto, Japan to a musical family and started piano lessons from a very early age. At age 14
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 0xad48dea410b16bb7e413f762a812c972e7dcef1a8cb1cb076be5da103ce12b97. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec07ca98-908d-43d1-ab6c-061ebf493457.json and https://artists.proofprofile.net/proofs/artist/ec07ca98-908d-43d1-ab6c-061ebf493457.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).