Lotu may refer to: People Brigitta Lotu-Iiga (born 1968), New Zealand rugby union player Lotu Filipine (born 1980), rugby union football player Lotu Fuli, politician Lotu Inisi (born 1999), Tonga
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 0xbe0570a82b13ae25afa6c75418fb407ecdd4cb54b47aa4707bf73780f5c37868. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45bfebfc-e6e9-481e-9f51-6e1d2c7f341c.json and https://artists.proofprofile.net/proofs/artist/45bfebfc-e6e9-481e-9f51-6e1d2c7f341c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).