thumb|A Ford Transit Custom low roof van A van is a type of road vehicle used for transporting goods or people. There is some variation in the scope of the word across the different English-speaking
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 0x7cd65009d171a0d33754f59499190ba1e5206520bf4b5cc236a018ecf0d9b31f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d28e4694-19bf-4460-8245-9cbf51d8aeb4.json and https://artists.proofprofile.net/proofs/artist/d28e4694-19bf-4460-8245-9cbf51d8aeb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).