__NOTOC__ Xun Huisheng (5 January 1900 - 26 December 1968) was one of Peking Opera's "Four Great Dan", along with Mei Lanfang, Cheng Yanqiu, and Shang Xiaoyun. All four were men who played the female
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 0xcbd857c3a7f062e913094ebbfe3dbed3f3340601a0ef77bae2e28b7b802eb163. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f65c1af5-6d07-4dad-9ad8-e10174bac556.json and https://artists.proofprofile.net/proofs/artist/f65c1af5-6d07-4dad-9ad8-e10174bac556.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).