thumb|A Nuro P2 test car in San Francisco (2025) Nuro, Inc. is an American autonomous vehicle technology company based in Mountain View, California. Founded in 2016 by Jiajun Zhu and Dave Ferguson, Nu
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 0x49bff60e3c68fd719338b49bc06ff87680fbf7dbc5d536182d7497764bb97d23. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97441e91-afac-4d3a-99c0-b89be640b43e.json and https://artists.proofprofile.net/proofs/artist/97441e91-afac-4d3a-99c0-b89be640b43e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).