A section house is a building or house-like structure located near or next to a section of railroad used for housing railroad workers, or for the storing and maintenance of equipment for a section of
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 0xd372935c9423fcea34e0ea655f656db5218540e3a7bd3f13359daca1a71defcf. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ad42375-263c-4f1a-ba18-1ef22987bc18.json and https://artists.proofprofile.net/proofs/artist/9ad42375-263c-4f1a-ba18-1ef22987bc18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).