Dmitry Stepanovich BortnianskyRitzarev, Marina: Eighteenth-Century Russian Music. London and New York: Routledge, 2016. P. 105.The Cambridge History of Music (28 October 1751 – ) was a Russian compose
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 0x6732019932f0cbf7b105da13067efcff57c49190c7ef73d1c46c8ce8eb8323a3. 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/1e474218-5737-42b6-93c5-15bf49372279.json and https://artists.proofprofile.net/proofs/artist/1e474218-5737-42b6-93c5-15bf49372279.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bortniansky: Concertos for Choir Nos. 11, 33, 19, 1, 21, 7, 18
Bortniansky: Concertos for Choir Nos. 12, 9, 29, 20, 30, 24
Bortniansky: Concertos for Choir Nos. 34, 2, 14, 13, 17, 31, 22, 26, 6
Bortniansky: Sacred Concertos, Vol. 6: Sacred Concertos for Double Choir
Bortniansky: Baroque Chamber Ensemble, Vol. 2
Bortniansky: Baroque Chamber Ensemble, Vol. 1
Bortniansky: I cried out to the Lord: Hymns and Choral Concertos
Izhe Kheruvimi (Cherubic Hymn): No. 7. —
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 0xa12e9070c7ee2d061d782520c775afde53e7207dc03a39053e9e8a6f3a3bc4e5. 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/HKI191253001.
Sacred Concerto No. 15, "Priidite, vospoim lyudiye" (Come, let us praise in song, O people): I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb710448ddd55a102e1456c7353a72cf5b06a77e32a6847f8e6a8d6118901a744. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191253002.
Sacred Concerto No. 15, "Priidite, vospoim lyudiye" (Come, let us praise in song, O people): II. Adagio
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Sacred Concerto No. 15, "Priidite, vospoim lyudiye" (Come, let us praise in song, O people): III. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6cf7e8c7b9ea5ed69a7b1d73eb79f62d6fa35cad8a19d6bf69d0476b997e22. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/HKI191253004.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): I. Largo
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Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): II. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0578d2e049514ea2340acd68d200eaff8ab8e475273cf13d28bd1c6a2e1bd358. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HKI191253006.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9712de247bd829f1aab0aecc6022217854b34992f2b97545bac50af34c1722ed. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HKI191253007.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): IV. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a5e6b1d5f2bf4d660599934813cb9ad4224e1beb106b9b923841ee102e3ff. 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/HKI191253008.
Sacred Concerto No. 1, "Vospoyte Hospodevi piesn' novu" (O sing to the Lord a new song): I. Allegro - Maestoso
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Sacred Concerto No. 1, "Vospoyte Hospodevi piesn' novu" (O sing to the Lord a new song): II. Andante con moto - Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1a7457b214231ae0445fbd3f6c9e95cb2132cdb05f18dd8a369df19f194c99. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKI191253010.
Sacred Concerto No. 1, "Vospoyte Hospodevi piesn' novu" (O sing to the Lord a new song): III. Allegro moderato
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Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): I. Adagio
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Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): II. Allegretto vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaed5217a938b63be3595e3acb34060768215b9c7b8ceb97ab5fc25a85a5e5f6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HKI191253013.
Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): III. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050c0c835079ff7a3e8636b444c9206cadde7484a76992ac0b5b3d0a4ed8b73. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191253014.
Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): IV. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d077200a54bff75c4d8cb9d70d10b6f7c192cb71cafbff2cee8d3919779473. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191253015.
Sacred Concerto No. 6, "Slava vo vishnikh Bohu" (Glory to God in the highest): II. Adagio
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Sacred Concerto No. 6, "Slava vo vishnikh Bohu" (Glory to God in the highest): III. Andante
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Sacred Concerto No. 6, "Slava vo vishnikh Bohu" (Glory to God in the highest): IV. Allegro
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Sacred Concerto No. 18, "Blaho yest' ispoviedatisia Hospodevi" (It is good to give thanks unto the Lord): I. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad55d083ca7eb9873a4b67981cd5fd8b6f7b61fbc1726441b842c855944273. 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/HKI191253020.
Sacred Concerto No. 18, "Blaho yest' ispoviedatisia Hospodevi" (It is good to give thanks unto the Lord): III. Adagio - Moderato
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Sacred Concerto No. 32, "Skazhi mi, Hospodi, konchinu moyu" (O Lord, make me to know mine end): I. Andante moderato
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Sacred Concerto No. 32, "Skazhi mi, Hospodi, konchinu moyu" (O Lord, make me to know mine end): II. Largo
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Sacred Concerto No. 32, "Skazhi mi, Hospodi, konchinu moyu" (O Lord, make me to know mine end): III. Adagio
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Sacred Concerto No. 32, "Skazhi mi, Hospodi, konchinu moyu" (O Lord, make me to know mine end): IV. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353c918201895841e11f37505ecfb18961d929033542ce751f4025ae2e2c443d. 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/HKI191253027.
Sacred Concerto No. 9, "Sey den', yeho zhe sotvori Hospod'" (This is the day which the Lord hath made): I. Allegro moderato
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Sacred Concerto No. 9, "Sey den', yeho zhe sotvori Hospod'" (This is the day which the Lord hath made): II. Largo
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Kol' slaven nash (How great is our Lord in Zion)
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Bortniansky: Sinfonia Concertante & Quintet
Bortniansky: Concertos for Choir Nos. 16, 3, 35, 5, 27, 8, 23
Bortniansky: Concertos for Choir Nos. 4, 28, 15, 10, 25
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Kol' slaven nash (How glorious Is our Lord in Zion) [arr. I. Ushakov for male choir]
The Male Choir of Valaam Singing Culture Institute
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