Mina or MINA may refer to: Places Iran Minaq, East Azerbaijan Mina, Fars Mineh, Lorestan Province Mina, Razavi Khorasan Mehneh, Razavi Khorasan Province United States Mina, Nevada Mina, N
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 0x3916350af72e90ce5f7f3cd97cdea980f539d4dec63db50f58410066f0c8b062. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/390c73f5-e26a-4a05-b2d2-d69ba8a8939e.json and https://artists.proofprofile.net/proofs/artist/390c73f5-e26a-4a05-b2d2-d69ba8a8939e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).