thumb|220px|"Kyoto Nue Taibi (The End)" (京都 鵺 大尾) (among The Sixty-nine Stations of the Kiso Kaidō one that is by Utagawa Kuniyoshi, in Kaei 5 (1852), October) The Nue (鵺, 鵼, 恠鳥, or 奴延鳥) is a legendar
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 0x9d9327bb5ca25c2615a4e1cb941ab8ec2d00bd543ef7e00b7a9c590da1b419db. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1184e80d-67a6-4d03-a091-7dfb78f159f4.json and https://artists.proofprofile.net/proofs/artist/1184e80d-67a6-4d03-a091-7dfb78f159f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).