Lu, Lü, or LU may refer to: Arts and entertainment Lu (duo), a Mexican band Lu (album) Character from Mike, Lu & Og Lupe Fiasco or Lu (born 1982), American musician Lu Watters (1911-1989), Ameri
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 0xbf53fb490024140a91c0fa77acfa124fab8969bfa174328d7f252ff5b691de4b. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c853e5f-c3f3-4216-aeed-ff06d0342847.json and https://artists.proofprofile.net/proofs/artist/2c853e5f-c3f3-4216-aeed-ff06d0342847.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).