Richard Leonard (born January 1962) is a British politician who served as Leader of the Scottish Labour Party from 2017 to 2021. He has been a Member of the Scottish Parliament (MSP), as one of the ad
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 0xfd3cc98b9279bbff0a4aaa02cab7d39effa83e4f23d75e240c536b0b957bb3ab. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3.json and https://artists.proofprofile.net/proofs/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).