Henryk Bolesław Szeryng (usually pronounced HEN-r-ik SHEH-r-in-g) (22 September 19183 March 1988) was a Polish-Mexican violinist. Early years He was born in Warsaw, Poland on 22 September 1918 into
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 0xb05ea1cede0f4bf1980eaa3dd33b27ae951b1243d8829b922c208980ba0ff248. 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/91ffd317-809f-49e1-8716-deaec3198b2a.json and https://artists.proofprofile.net/proofs/artist/91ffd317-809f-49e1-8716-deaec3198b2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach for Breakfast - The Leisurely Way to Start Your Day
Herz und Mund und Tat und Leben, Cantata BWV 147: No. 10 Jesu, Joy of Man's Desiring (Arr. by Guillermo Figueroa)
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 0xbf44f17face4e4c33be02ca03fbe1b077c2872a698d04b8ed7b204dd84b6421b. 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/DEF058902750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e01b14b575922c06ff72d35249b24eeded67017b23555fa87e610995d5df57. 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/NLA506800158.
Oboe Concerto in D Minor, BWV 1059R: II. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc016a145e30b5dba010d1dea3a05a739b8c395de2607af89fb9246ed1e007c. 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/NLA508119405.
Suite for Cello Solo No. 3 in C, BWV 1009 - Guitar Transcription by Pepe Romero (1944-): 5. Bourrée I/II
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Sonata No.2 in E flat major, BWV 1031 - For Flute and Harp: 2. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e645b5ec516d355ad4d0a23905b9a49a62717ee8351c5bc79a27033c5044749. 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/NLA508702310.
Sonata No.2 in E flat major, BWV 1031 - For Flute and Harp: 1. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3f1d14fe288dcfe19d6fa2f2153f68f18d6bedbf10f5f80fcaf792bcfd5de7. 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/NLA508702309.
Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: II. Adagio ma non tanto
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Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020 - arr. Flute, Harp, and Cello: 1. (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57fa9be03354f64dd5e89c0292b34156020672ae8c87c130c0e559bdcc7280c. 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/NLA508702319.
Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020 - arr. Flute, Harp, and Cello: 2. Adagio
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Christmas Oratorio, BWV 248 / Part Two - For the second Day of Christmas: No. 10 Sinfonia
Academy of St Martin in the Fields Chorus
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df10132595206e89e883edfd56de36985bf3b658df84b3871a069c55adca07. 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/NLA506800458.
Sonata for Flute or Violin No.4 in C, BWV 1033: 1. Andante - Presto
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Sonata for Flute or Violin No.4 in C, BWV 1033: 4. Menuet I - II
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English Suite No. 3 in G minor, BWV 808 - Transcr. for two guitars A. Lagoya: 2. Allemande
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Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
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Suite in E for Lute, BWV 1006a/1000 - Arr. Harp: 3. Gavotte en rondeau
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Concerto For Violin, Oboe, And Strings In D Minor, BWV 1060 - Arr. For Panpipes From Reconstruction By Max Schneider (1875- 1967): 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc326bcef604442a4086fe8caa9a48aa31e2fddf3b6d842ac9589cbe8a0489b8a. 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/NLA508700614.
Oboe d'amore Concerto in A Major, BWV 1055R: I. (Allegro moderato)
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Violin Concerto In E Minor, Op. 64, MWV O14: 1. Allegro molto appassionato
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Brandenburg Concerto No. 2 in F Major, BWV 1047: I. [Allegro]
Bach, J.S.: Brandenburg Concertos / Orchestral Suites / Violin Concertos
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Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3417a3143fec5b8c204cd64589c37f1c514e3db05d9071724e3bc1ebee865a1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLA507921520.
Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
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Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddc2f429a0f069826d5c75adfe5f05e996d130a163bbe6a7938a7f37a46a2ba. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NLA507509708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8119e72af817870f4c0c01e738786a63447b17bdd9c2ca747a1b0ec66d4879ec. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLA507921506.
Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
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Brandenburg Concerto No. 5 in D Major, BWV 1050: I. Allegro
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Brandenburg Concerto No. 5 in D Major, BWV 1050: III. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddc2f429a0f069826d5c75adfe5f05e996d130a163bbe6a7938a7f37a46a2ba. 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/NLA507509708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaef1346d2e8fe4a2bcc190ca410222a3154236a8fe2778680f369a4693beeaf. 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/NLA507000251.
Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2934c57e41c9a299beefea9082b02a1cd3b6a0744cf51a448315a033c9b51d5. 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/NLA507509705.
Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8600b34c48fb221c13d8da919bb0b3af5f0d9a55e23c1e6117fc4806ade3e5. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLA507921519.
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
Violin Concerto In D, Op. 35, TH. 59: 1. Allegro moderato
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Violin Concerto No. 3 in B Minor, Op. 61: 1. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aeb3a037d8fd79c2d8e78190e1570fe55c629ad7ae8ec0bae70ba5ba861f4e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506900804.
Violin Concerto No. 3 in B Minor, Op. 61: 2. Andantino quasi allegretto
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Violin Concerto No. 3 in B Minor, Op. 61: 3. Molto moderato e maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746de2eecc06aa4bf03d70e9b52e18af1f5449a88621a51432249e6c4a601016. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/NLA506900806.
Violin Concerto No. 1 in A Minor, BWV 1041: I. [Allegro moderato]
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