VXR was the branding for the high performance trim specification, used since 2004 for models in many of Vauxhall's car range in the United Kingdom. Holden has also used the VXR badge for some of its h
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 0x5422efa95474451020c054ab44b2ff97624e72692266a4bdba84a14266773f15. Chain 2 (Bitcoin): anchored in block 953982 (2026-06-16T17:42:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c0b2956-b842-4f0a-9529-eef9cff20a12.json and https://artists.proofprofile.net/proofs/artist/2c0b2956-b842-4f0a-9529-eef9cff20a12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).