The Hungarian National Philharmonic Orchestra (; formerly, the Hungarian State Symphony Orchestra, ) is one of symphony orchestras in Hungary. Based in the capital city of Budapest, it has stood as o
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 0x6f21713ccfdf51e0f0266e00636b7266ab41da2fe703371b15655821c95a29f0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6570b274-6598-4291-848f-eaa31a9af529.json and https://artists.proofprofile.net/proofs/artist/6570b274-6598-4291-848f-eaa31a9af529.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Debussy: Marche Ecossaise / Images (Arr. for Orchestra) / Ravel: Le Tombeau De Couperin
Brahms: Piano Concerto No. 1 Op. 15 & Liszt: Trois odes funèbres S. 112