Mehdi Bagheri (), (born 16 November 1980), is an Iranian kamancheh player and composer. Biography Mehdi was born in Kermanshah in 1980. He began his musical endeavors by learning to play the Tonbak
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 0x0fe616efefc53c0af295d57dea5fcca1ac31d0c8eb99297f24a0f78e4af9cc9e. 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/aaadf6b7-8cc2-4dd1-a97a-dcb57d658d8b.json and https://artists.proofprofile.net/proofs/artist/aaadf6b7-8cc2-4dd1-a97a-dcb57d658d8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).