is a masculine Japanese given name. Written forms Isamu can be written using different kanji characters and can mean: 勇, "courage" or "bravery" 勲, "merit" 敢, "gallantry" 武, "war" The name can also
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 0xb993eb6852ccc8217142c302898bc9f63ee07ddc3240842a223b03b33aee7520. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/309e70f9-8115-43e5-9c79-350b52a7a2c0.json and https://artists.proofprofile.net/proofs/artist/309e70f9-8115-43e5-9c79-350b52a7a2c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).