Mina Jafari (Persian: مینا جعفری) is an Iranian chorister. She began her work with Tehran Symphony Orchestra and went on to be part of several important choirs like National Orchestra Choir and Damou
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 0x22eab384e715f03ce17b85ade541c058868fce51d3e3240829f69ba6c5b5691e. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd79c5e8-cf58-4ea3-b9d7-fe081d1aaf0a.json and https://artists.proofprofile.net/proofs/artist/bd79c5e8-cf58-4ea3-b9d7-fe081d1aaf0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).