is a Japanese surname. Notable people with the surname include: , Japanese sport wrestler , Japanese martial artist and actor Kensuke Kazama, photographer Sadao Kazama (born 1940), Greco-Roman wrest
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 0x0b8aa58aded12109bc3c8c32de60b99bbc4b234709a710c9cec9713367e15c98. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0761f32-3dcc-4643-96d7-e82987917448.json and https://artists.proofprofile.net/proofs/artist/e0761f32-3dcc-4643-96d7-e82987917448.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.