Lu Han (; born April 20, 1990), also known mononymously as Luhan, is a Chinese singer, actor, and dancer. He was a member of the South Korean-Chinese boy group Exo and its sub-group Exo-M, before leav
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 0x3916dc82de9c4b8a5303b9a5b061d0d966a14e4cf977fef6fdedb176e7823d33. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaecc655-b475-4213-8d97-f75475c52e23.json and https://artists.proofprofile.net/proofs/artist/eaecc655-b475-4213-8d97-f75475c52e23.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).