Lauren Henry (born 21 December 2001) is an Olympic gold medallist and world champion British rower. Career Henry took the overall win in the British Rowing Senior Trials 2023 in the W1x, whilst still
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 0xa5611b95921acd16c769100de7a295a1eeb3fa6b8678dd8526a2eb77812560ca. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a76e6f89-815b-4e0c-9fd9-e0787013e2db.json and https://artists.proofprofile.net/proofs/artist/a76e6f89-815b-4e0c-9fd9-e0787013e2db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).