Nils Marius Thomas (9 July 1889 – 13 November 1979) was a Norwegian sailor who competed in the 1920 Summer Olympics. He was a crew member of the Norwegian boat Lyn, which won the silver medal in the 8
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 0x0c307cfb25174c71b275dd8b7a05bd1894b0b856c10bc1d4c481782e9fb5cda1. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb0c7648-6515-45e6-8e2f-e185db52af26.json and https://artists.proofprofile.net/proofs/artist/cb0c7648-6515-45e6-8e2f-e185db52af26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).