Akiyama (written: /, lit. 'Autumn mountain') is a Japanese surname. Notable people with the surname include: , general in the Imperial Japanese Army and considered father of the Japanese Cavalry Deni
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 0xc9c6d8b951dd7900e1ada1e7c921f433cb126f0ed6010f9375e2a12ad2a7295c. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f545e885-8c62-498d-8e7b-25a0c99e1d2c.json and https://artists.proofprofile.net/proofs/artist/f545e885-8c62-498d-8e7b-25a0c99e1d2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).