Mil, mil, or MIL may refer to: Places Mil, Syria, a village in Syria Mil, Azerbaijan, a municipality in Beylagan Rayon Mil, Markazi, a village in Markazi Province, Iran Metropolitan area of Milan
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 0x221add3228a201236180aa16558e26d8c381b6c2e5671b3523c1ec1564bbea42. 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/ba3c4886-dea3-4941-81c3-b7b48a1f63ad.json and https://artists.proofprofile.net/proofs/artist/ba3c4886-dea3-4941-81c3-b7b48a1f63ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).