Artur Schnabel (17 April 1882 – 15 August 1951) was an Austrian-born classical pianist, composer and pedagogue. Schnabel was known for his intellectual seriousness as a musician, avoiding pure technic
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 0x7c90d31f292fb9a638d5ca262bd562adc5f3b6f93bb0b77a0033576e316ad00a. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85a4dd8b-a933-4ea3-837d-645bb351a77f.json and https://artists.proofprofile.net/proofs/artist/85a4dd8b-a933-4ea3-837d-645bb351a77f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Souvenirs. Piano Music from the Golden Age
Brahms: Piano Concertos Nos. 1 & 2 (Remastered 2023)
Artur Schnabel in Performance with Joseph Szigeti & Pierre Fournier
Beethoven: Variations and Fugue in E-Flat Major, Op.35
Schnabel Plays Schubert Piano Sonata No. 17, Piano Quintet “Trout”
Schubert: 6 Moments musicaux, D. 780 & Allegretto, D. 915
Schubert: Piano Works, Trout Quintet, Lieder
Artur Schnabel's Complete Bach Recordings
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 0xb7328fb44dc61abb21e03909da3f5fe51cf6a544e45e02f01b3bc12a565aeca9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761620206 — a six-check JSON result.
Beethoven: Piano Sonatas Nos 8 "Pathétique", 9, 10 & 11
Beethoven: Piano Sonatas Nos 27, 30, 31 & 32
Beethoven: Piano Sonatas Nos 26 "Les Adieux", 28 & 29 "Hammerklavier"
Beethoven: Piano Sonatas Nos 2, 5, 6 & 7
Beethoven: Piano Sonatas Nos 13, 14 "Moonlight", 15, 18 "The Hunt" & 19
Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf37865186fcbb222920645f88b8d7b701e0d22db891aa94fe75095f6bf42e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601144 — a six-check JSON result.
Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6b5c57b7343e97c600fd6034bc74c7e574dff545d4f82d1019efa134d62aff. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601145 — a six-check JSON result.
Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7a85ea5080e48fb99e9bda301d477f436fb95b03d4797dbbf40ac8750befef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601146 — a six-check JSON result.
Beethoven: Piano Sonatas Nos 12, 16, 17 "The Tempest" & 20
Beethoven: Complete Piano Sonatas (2016 Remaster)
Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b743b9410d2b7a33de7b5780c128aea21670e677d074930cb2a6d2564a621. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601102 — a six-check JSON result.
Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d168493b74f13c77810e12048d759b962cc290b88d12c9b382fd9ea10b447f8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601103 — a six-check JSON result.
Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb026e4a65442c32b05c2cc15e08da76adeb05a86789e5e14684b4598662b96db. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601104 — a six-check JSON result.
Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465be495070b98fc981fff89ccff158757d02cde8a4c1941a7842f97d7de5637. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601105 — a six-check JSON result.
Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbb96e504ebd8e6b4d302e0df33b19df353786a339a0c8ee1dbf31c29357fb7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601106 — a six-check JSON result.
Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc83c12c3484a27c40a48ded9f92dacc242f3f71d0f466c4ead71f0e8222d4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601128 — a six-check JSON result.
Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aba93cd53dc3b7e837d8ebbbba22e53c864bfa974daad573fac9293e2d7fa66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601129 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf37865186fcbb222920645f88b8d7b701e0d22db891aa94fe75095f6bf42e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1601144 — a six-check JSON result.
Schnabel: Klavierquintett - Lieder - Klaviersonate
Schumann: Piano Quintet in Eb, Op. 44 - Dvorak: Piano Quintet in A, Op. 81
Artur Schnabel in Performance (1943, 1947)
Schnabel: String Quartet No. 1 - Notturno
Schubert Recordings (Complete) (Schnabel) (1932-1950)
Mozart, W.A.: Piano Concertos Nos. 13, 17, 19-24 and 27 / Piano Sonatas Nos. 8, 12 and 15 (Schnabel) (1934-1947)
The Piano Masters: Arthur Schnabel (1933-1939)
Klaviermusik 50 Meisterwerke – Klassik die man hören muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afacb5b46429591349fba3a371186222328353d4670e30437b9da132130d4e2. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9901682 — a six-check JSON result.
Etudes, Op. 10: No. 5, Black Key Étude - Welte-Mignon 390
Horizons. Piano Music from the Golden Age
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b7ba8ce6e61c43885eb0b40cdab41880d3a291810f406460b9bdcb55babc2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82326727 — a six-check JSON result.