The Northlander is a passenger train operated by the provincially-owned Ontario Northland Railway in southern and northeastern Ontario, Canada, which was discontinued in 2012. Rail service will be rei
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 0xbd383b1e31ef1606186f2e3e29fb5132b487793cbc2320b0a9cbf2d4b0d7ba29. Chain 2 (Bitcoin): anchored in block 953975 (2026-06-16T16:53:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2afb5ca4-5d6a-4791-afc6-5d68d0d7e9ce.json and https://artists.proofprofile.net/proofs/artist/2afb5ca4-5d6a-4791-afc6-5d68d0d7e9ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).