Maurice "Moss" Lane Marshall (12 January 1927 – 16 May 2013) was a New Zealand middle-distance athlete. Early life and family Marshall was born in Thames on 12 January 1927, the son of Henry Horace
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 0xd35fa513697eec907f2b195358927bd5a4c3cf72f470af745ac39f58973cb142. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27800df2-3fa8-470e-94e5-6e7d94e03795.json and https://artists.proofprofile.net/proofs/artist/27800df2-3fa8-470e-94e5-6e7d94e03795.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).