A Legend () is a 2024 Chinese action fantasy film. It was written and directed by Stanley Tong and starred Jackie Chan, Lay Zhang, Gülnezer and Aarif Rahman. It was released in China on July 10, 20
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 0x58b43afac34af95d4a531f29711ef9c86292ddf349cd1af5d9cf899ce5963a95. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b490243c-5b9c-4c2b-a454-587c84d13c70.json and https://artists.proofprofile.net/proofs/artist/b490243c-5b9c-4c2b-a454-587c84d13c70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).