KUKA AG is a German manufacturer of industrial robots and factory automation systems. It has 25 subsidiaries in countries including the United States, the European Union, Australia, Canada, Mexico,
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe450b6d05b8d6d2f7e477260ef32d3f7e7c66a4b46ae67319bc62930cd8bfe37. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d74d6bb-e0d9-4d93-960e-25a822f5b41a.json and https://artists.proofprofile.net/proofs/artist/8d74d6bb-e0d9-4d93-960e-25a822f5b41a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).