Woren (), alternatively rendered as Wesin (; 1804 – 8 June 1871), courtesy name Genfeng (艮峰), posthumous name Wenduan (文端), was an official of China's Qing dynasty. He was from the Mongol Ucigeri clan
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 0x8c209fc508f8e6b4783c2b97074b9281eb782778c1ecc227cc50b4a01be596ec. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec7d319a-a86b-46df-a304-0d11d0762f98.json and https://artists.proofprofile.net/proofs/artist/ec7d319a-a86b-46df-a304-0d11d0762f98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).