The name Kamo may refer to the following: Places Japan (Note: kamo (鴨), is the common word for duck in Japanese, but the following names do not necessarily mean duck and are not necessarily written
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 0x2a7ff86c04e1f71830d2ac8fa2fa45cba2099213ffd7e39f279c508d84b279db. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2a34b42-e37a-4a15-a6f5-4399320f0b9f.json and https://artists.proofprofile.net/proofs/artist/f2a34b42-e37a-4a15-a6f5-4399320f0b9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).