Keivan Saket () (born 1961 in Mashhad) is an Iranian composer and university professor and Tar and Setar Player, and author of 12 books for Tar and Setar. Early life Keivan Saket was born in 1961
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7fd6d03d609f2733168127765916fefe09dc84d8972a12eb65d503c8674023. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/297e5a96-be35-4e21-b86f-62f7522fb8d8.json and https://artists.proofprofile.net/proofs/artist/297e5a96-be35-4e21-b86f-62f7522fb8d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).