Sir Henry Percy Maybury (17 November 1864 – 7 January 1943) was a British civil engineer. He began his career as a railway engineer, working on many railways in England and Wales before becoming the c
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 0xe5f23a3024a7dbdf76f4288d0a8d8d71421e5efa42499c9ffc2057a5a02aae04. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24b4c576-5a2f-44b2-bcf9-06b9a4f8be32.json and https://artists.proofprofile.net/proofs/artist/24b4c576-5a2f-44b2-bcf9-06b9a4f8be32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).