Henryk Wieniawski (; 10 July 183531 March 1880) was a Polish virtuoso violinist, composer, and pedagogue, who is regarded amongst the most distinguished violinists in history. His younger brother Józe
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 0xd38542e3dcd1808b4d9e4c74627597b4d67b9582e48f4590293e8105ca5cc56d. 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/0a755500-7890-4074-922d-2ffed3bd1888.json and https://artists.proofprofile.net/proofs/artist/0a755500-7890-4074-922d-2ffed3bd1888.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Elgar: Variations on an Original Theme, Op. 36 "Enigma": Theme
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287401f3246a53c5fb73c931dc3a87c398cfb46509fbfec03316c4544a11773a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000150.
Brahms: Variations on a Theme by Haydn, Op. 56a "St. Antoni Chorale": Variation III. Con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a1e078332d9724dab98fd57c97562278f81c592f8d82fbbc7f91cf09e5686d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000085.
Mahler: Rückert Lieder: No. 2, Ich atmet' einen linden Duft!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e750d985c5c9157f47d5cc97f2276322591930125d56d535dd4fb0a93a33ab. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBAYC2001326.
Elgar: Introduction and Allegro, Op. 47: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf7a29391af2396783f79ca167928d404d3de364f160681882c3013c8022700. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000144.
Tchaikovsky: Serenade for Strings in C Major, Op. 48: II. Valse. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d01edcd84a5485018ed2b8163d825751b1a9b00956536ffa8be0be97ffc1370. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYC2000198.
Dvorak: Serenade for Wind Instruments in D Minor, Op. 44, B. 77: I. Moderato, quasi marcia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908a91412ef7bd3153a976b7cb1119ed34b2f152bc2ebb8dbbd8a73659828d60. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000755.
Rubbra: Improvisations on Virginal Pieces by Giles Farnaby, Op. 50: No. 4, Loth to depart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f2334fdd614bfb29f919e9ca9793efcbda3274afa2fe43a9c2328c9acccccf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000682.
Franck: Symphonic Variations for Piano and Orchestra, FWV 46: IV. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe80f716ac658f87b0b872d9eaea7793479a52658e21cbdfe10051bce87f382. 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/GBAYC2001074.
Puccini: Madama Butterfly, Act II: "Un bel dì vedremo" (Butterfly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb378b953d412b37b0c1b2cbe413967036a02a3f74dc09ec9b3dd4f0d4b046. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2001218.
Berlioz: La Damnation de Faust, Op. 24, H 111: Marche hongroise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa26458605270d51ab9cd4da2df02389fe91c1f932a25fb748f1a3a9a71ba38b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000937.
Marcello: Oboe Concerto in D Minor: II. Adagio (Performed in C Minor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fea7f2190326f702f17164e149486ffce9c0a7134eb3035e2c568773a0669a4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2001041.
Grieg: Piano Concerto in A Minor, Op. 16: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82cd4aba733caafc70e27310cdf2ce93c304b00abf2b96e95fb8e310ab81ae0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2001387.
Mahler: Kindertotenlieder: No. 2, Nun seh' ich wohl, warum so dunkle Flammen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac08ffd3a6ff2ef054080ec88995637e51a8ff12a8f6fe8547a182481113e03. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2001321.
Brahms: Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa111ca3e29b53b130d8da056eefb0f6e92f60dacb8e1f18da1c586974d9b93. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2323dd1f310900c63bd5e402f68d8a2b890d550f98ec628d23964c54205f4c3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000866.
Debussy: Nocturnes, CD 98, L. 91: No. 2, Fêtes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f37d706b010d56b7cde8d2a2a7f7e978b04091e2a4ceadbbd3a56665a2d0f2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000328.
Wieniawski: Violin Concerto No. 2 in D Minor, Op. 22: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d52a25fe82cff4ddaada6df9194f3488b519e1b10500703b5c43c9c706825d. 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/GBAYC2001402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626971cb3f43a3dc32ae23580e6eabcd3c50db7e47526e2b8e3aaead3835aa97. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAYC2000278.
Elgar: Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfbf983cc48b6c283bfdcfdc09b800350a21f105711d270def1c67142fc14ae. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2001064.
Beethoven: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5f29c608e3f85b3dd91b7028fbb39148607e23e19115aa0ff69ed9263315b2. 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/GBAYC2000743.
J. Strauss II: An der schönen blauen Donau, Op. 314
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae100132d169c5d7a33b4e6215544edd959c5a452b34e8afe6f187868cef10c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2000221.
Mahler: Symphony No. 5 in C-Sharp Minor: IV. Adagietto. Sehr langsam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8c777d12f7fd49ee2d991ea406f7787cb494dd9237fc8fd5150faf7782e24d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2001368.
Études-Caprices for 2 Violins, Op. 18: No. 2 in E-Flat Major
Paganini: 24 Caprices — Caprices by Berlioz, Cervelló, Kreisler, Ortiz, Saint-Saëns, Sarasate, Wieniawski
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c415a33346edbebc55b987e049031bcd84b8ef947a3b4133e6797c7db5c606. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962401800.
Wieniawski: L'école moderne, Op. 10: No. 5, Alla saltarella (Arr. Kreisler for Violin and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafbe4bc84acdc1bcd2748d74d45a20f2d64350775d22d045b123ef07db6ba17. 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/GBAYC1701113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e43de53d5009036f86c9d86a032b60b57528bc26caea18b1c0f277f70f9fbf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641606.
Wieniawski: 2 Mazurka caractéristiques, Op. 19: No. 1, Obertass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2402dd9a91a552a1bdfdea9ff62686a8d4fedc6563280f6bcef83e8ced4393ca. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1701108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa89c46a94c19050102b825c7aaa3f21437271db8fcaddc38450d79f8bbe009. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078641601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8bd323819917009ce6e5a3a507752524533607958bd6e46c755976c546da76. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059204010.
２つの性格的なマズルカOP.19〜オベルタス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0050c7c003e54e3aa3f8844edc009e1c342958e15426ebddcd61c8799cba9e09. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN200901109.
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