Wan Li (December 1916 – 15 July 2015) was a Chinese Communist revolutionary and politician who served as First Vice Premier of the People's Republic of China from 1983 to 1988 and the 5th Chairman of
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d9ca0a15bf9777574523e94501384601803ecf8969ffddee822e72c39f0000. Chain 2 (Bitcoin): anchored in block 953975 (2026-06-16T16:53:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b2416bb-9795-4d91-b34a-a3da1e20cb2e.json and https://artists.proofprofile.net/proofs/artist/2b2416bb-9795-4d91-b34a-a3da1e20cb2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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