Lin Yan (born 1982) is a Chinese television and film director from Beijing and a graduate of the Beijing Film Academy. After early work as an executive director, mainly with Teng Huatao, she made her
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 0xbbc191b6087fe728b0b6bc9371c718706ddf75a1be7c2d5979be00fa270da357. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/497f8d12-68e8-4fb0-9eb7-753149190fcd.json and https://artists.proofprofile.net/proofs/artist/497f8d12-68e8-4fb0-9eb7-753149190fcd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).