Ferenc Nagy (; 8 October 1903 – 12 June 1979) was a Hungarian politician of the Smallholders Party who served as Prime Minister of Hungary from 1946 until his forced resignation in 1947. He was also a
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 0x507f7808ce3ae9cb5bab5a24fc77ac7ac59407ba82fb9c2f1b38fbb51eb1c031. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9773c5e-7480-4cea-89b2-507ce1db4fdc.json and https://artists.proofprofile.net/proofs/artist/b9773c5e-7480-4cea-89b2-507ce1db4fdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 Years of Hungaraton (1951-2000): Singers