The term "先生", read in Japanese, in Chinese, in Korean, and in Vietnamese, is an honorific used in the Sinosphere. In Japanese, the term literally means "person born before another" or "one who co
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 0x4810d61cb6c620558ff1c070bcd6e9fdfa12a64e92941550def0c805df8d0e2f. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f464bd7-fcb3-4d4e-9c7f-14974b9ee392.json and https://artists.proofprofile.net/proofs/artist/2f464bd7-fcb3-4d4e-9c7f-14974b9ee392.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).