Debora Racing cars is a small French car builder, popular with private racing teams, based in Besançon, France. Teams generally use their chassis to take part in Le Mans style endurance racing such as
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 0xb876e0ae3d31ea89cd797bedabbe5208e7c72bca82977025a40c84939d46d1d3. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e1c2e60-98ae-43e1-87ea-9e8b3b928ff8.json and https://artists.proofprofile.net/proofs/artist/7e1c2e60-98ae-43e1-87ea-9e8b3b928ff8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).