Lemu may refer to: People Ahmed Lemu (1929–2020), Nigerian scholar Aisha Lemu (died 2019), Nigerian scholar Hassan Lemu, Nigerian politician Massa Lemu, Malawi artist Places Lemu, Finland
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 0x9e2e6cf43950a989e9c380f0cc4d17a961824e3f0c496fc2ec2de8d783a8966d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4da940e0-8530-46c6-97f6-6beceec17a59.json and https://artists.proofprofile.net/proofs/artist/4da940e0-8530-46c6-97f6-6beceec17a59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).