Péter Szabó (13 April 1899 – 21 September 1963) was a Hungarian football manager and player. Club career Born in Budapest, Szabó played with MTK Budapest FC where he won three consecutive championshi
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 0x4faedf2d7d3bcfb6fea4de3e713d3dd411f4b1d24759d7a6cdd0f40743d4b02d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d5b8375-c316-4eea-be05-4848422b63bb.json and https://artists.proofprofile.net/proofs/artist/2d5b8375-c316-4eea-be05-4848422b63bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Koessler: Trio Suite / Piano Quintet in F Major / Moor: Cello Sonata No. 2, Op. 55
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x62d0f39aba8b1a79993064213e7135e4dedd602de68ec1e7ce2740e9a03f5961. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199202005.
Concerto for Violin, Cello & Piano in C Major, Op. 56 "Triple Concerto": II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8926b51d0cf315db3682c7de9f39465533cb41cd6f9d5d7fbcf87eaf2b1d3a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199803305.
Pleyel: String Concertos (Complete), Vol. 2
Pleyel: String Concertos (Complete), Vol. 1 - Cello Concertos
Csaba Szabó: Chamber Music for Strings and Winds
Beethoven: Chamber Music for Horns, Winds and Strings
Septet in E-Flat Major, Op. 20: I. Adagio - Allegro on brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b02b79d3355bcadd3693aec2382a551c7ce2df6f9a872978f0b614bc8139e3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215601.
Septet in E-Flat Major, Op. 20: III. Tempo di menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5d0528a9f672355c07746156d742e7a0244dc7f3a098d60b30b067eb24d876. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215603.
Septet in E-Flat Major, Op. 20: IV. Tema con variazioni: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817596892b6f2389710cf80a058cb590889e796f17a6a3643cdec1b2e9bd464e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215604.
Septet in E-Flat Major, Op. 20: V. Scherzo: Allegro molto e vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b5491bd756153df33c99007c792b2afbeff7c5e80405612a4097826ce6ae5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215605.
Septet in E-Flat Major, Op. 20: VI. Andante con moto alla marcia - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd634d61926eabfda108c76314480cd5ead4e490f45857b210d62f4ee5ed0e2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215606.
Wind Quintet in E-Flat Major, Hess 19: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d2469271945897b56a60cb4e835bd2ca14d43628231b8d78330c5d931cef5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215607.
Wind Quintet in E-Flat Major, Hess 19: II. Adagio maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1924e9d4a687c99697556f210600c788743cc30ce2c572833f0d5c777b8b608. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215608.
Wind Quintet in E-Flat Major, Hess 19: III. Minuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e5bb939d787c20e4a053c500aae4dd903a245e8fef0a2b1587aa784075da2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215609.
Sextet in E-Flat Major, Op. 81b: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4756730163e5803584dd7e6ad75af03232b5adf37e8eeb228b2983aebf636243. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215610.
Sextet in E-Flat Major, Op. 81b: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545b624065cdc16311b8852ec9474577d3eb2460711f14b73644c0422d65df7b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215611.
Sextet in E-Flat Major, Op. 81b: III. Rondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c19ce3ba80387bf306334ea9e3b0ad3c4f4a0644d513d8b2861a253d4d21fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199215612.
Gemesi: Church at Dawn / Portrait of Istvan Macsai / Pavane Pour Une Infante Defunte / Clods / Duo
Giordani, T.: Flute Trios, Op. 12, Nos. 1-6
Rozsa: Duo for Cello and Piano / Goldmark: Cello Sonata, Op. 39 / Liszt: Consolations
Moor: Cello Sonatas Nos. 1 and 3 / Cello Sonata in A Minor
Dohnanyi: Cello Sonata / Lajtha: Cello Sonata / Cello Concerto
Brahms: Piano Trio, Op. 8 - Dvorak: Dumky Trio, Op. 90
Csaba Szabó: Memorial Concert at The French Institute in Budapest