Riad Mammadov (real name Riad Mamedov, , ; born 11 January 1989 in Baku) - pianist, musicologist, performer of jazz and classical music. At the invitation of Theodor Currentzis, he was appointed speci
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 0xc7188f3e855f587dce353fd16516a44eea325c67e9239bb18a697b951b4df9c4. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5c96978-9f87-45d4-8258-07dab063c320.json and https://artists.proofprofile.net/proofs/artist/f5c96978-9f87-45d4-8258-07dab063c320.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Riad Mammadov performs at The Pushkin Museum (Tchaikovsky, Chopin, Scriabin)
Riad Mammadov performs at The Pushkin Museum (Brahms, Rachmaninoff, Mammadov)