Rastak Music Group is an Iranian contemporary folk music ensemble that was formed as an experimental music group in 1997. Rastak seeks to collect, record and interpret Iranian, Kurdish, Baloch and Tur
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 0xda142919e85e8e687d57c63358a979f5fe8b6ae416dbbcdc3e7ff41c50279bde. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d8ef2c9-7d28-441a-9d31-32f8a0374006.json and https://artists.proofprofile.net/proofs/artist/3d8ef2c9-7d28-441a-9d31-32f8a0374006.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sornaye Nowrouz: Persian Regional Music & Folk Dances
Ancient Hues / a Narrative of Iranian Folk Music