Malcolm Sinclair may refer to: Malcolm Sinclair (Swedish nobleman) (1690–1739), whose assassination caused the Russo–Swedish War of 1741–1743 Malcolm Sinclair, 20th Earl of Caithness (born 1948), Bri
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 0xb40c10dace5084f9cf7e1469e10142154b1b9b198dda586a591d640f280b3863. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27eea65f-1b14-4ed3-9443-c5f94762cfba.json and https://artists.proofprofile.net/proofs/artist/27eea65f-1b14-4ed3-9443-c5f94762cfba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).