is an administrative unit in Japan, often referred to in English as town. In Japanese and other languages, it may also refer to: Places Machi, Iran, a village in Hormozgan Province, Iran Maji, Ethio
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 0x2779e2a4ca060f2f33983fbd8e5f53bd8b4881098caae5ee0101b95ed0f21f98. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d79a095f-cf9c-4f8d-846e-0636605be07d.json and https://artists.proofprofile.net/proofs/artist/d79a095f-cf9c-4f8d-846e-0636605be07d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).