Cadillac Motor Car Division, or simply Cadillac (), is the luxury vehicle division of the American automobile manufacturer General Motors (GM). Its major markets are the United States, Canada, and Chi
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 0x77d05673c0bb79b2d4da9b835ffc134ef4c7be6670abd11be8be8089e10da833. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44a890d9-32e0-4361-b2df-3f416df59eb9.json and https://artists.proofprofile.net/proofs/artist/44a890d9-32e0-4361-b2df-3f416df59eb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).