Zetton (ゼットン), stylized "ZETTON", is a Japanese hiphop record producer who emerged in 1996 from the underground hip hop scene in Fukuoka, Japan. Zetton is also the chief executive officer of Inside M
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 0xb4f0d98c1f0c628c59023868d57699246889f29f98223cf45ea845deab948616. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7d51a79-447d-4927-b0de-96b6d08ad049.json and https://artists.proofprofile.net/proofs/artist/a7d51a79-447d-4927-b0de-96b6d08ad049.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).