Airstream is an American brand of travel trailer easily recognized by the distinctive shape of its rounded and polished aluminum coachwork. This body shape dates back to the 1930s and is based on the
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 0x686c1393301b28730106478a7c17e1e5f7dd8eea7a1e59ad361aad0eb8233cbb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01afd32f-a9cf-42e0-a6f9-ee39719760c1.json and https://artists.proofprofile.net/proofs/artist/01afd32f-a9cf-42e0-a6f9-ee39719760c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).