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 0x2c62b917a091c488ca6fdea01cd4ed2c647e0f50c3b2480c96606e2d349e172d. 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/f1731449-6090-4e84-9f75-4ef8dceebcc1.json and https://artists.proofprofile.net/proofs/artist/f1731449-6090-4e84-9f75-4ef8dceebcc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x07fddc22b37737f0acbf81ae1f2c8573479a1b9295998210ec854e477203a645. 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/USB8U1601656.
Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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Wenn Engel musizieren I (Geistliche Musik - Musikinstrumente von 1594 im Freiberger Dom)
Schumann: Missa Sacra - Brahms: Missa Canonica
Johann Sebastian Bach : Concertos For Two, Three And Four Harpsichords
Concerto For 2 Keyboards In C Minor, BWV 1060: I. Allegro
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Concerto For 2 Keyboards In C Minor, BWV 1060: II. Largo Ovvero Adagio
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Concerto For 2 Keyboards In C Minor, BWV 1060: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe881d3618affba30566168cd658276e61a50fcff759706309e178c00971625c2. 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/HKI199648703.
Concerto For 2 Keyboards In C Major, BWV 1061: I. - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e3c3f97c1231d5b5d44bfe22bd7fd0a19e99ef22316ebc5c2857a001f0b8c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199648704.
Concerto For 2 Keyboards In C Major, BWV 1061: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eb0d8efdb764206232b469b8420604917e1750b8b0d4e1263a8311becc69a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199648705.
Concerto For 2 Keyboards In C Major, BWV 1061: III. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d064c705a037967357d4f1e65c1188c1c5a27d36fe914f9f577c1d24bcfea8d. 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/HKI199648706.
Concerto For 2 Keyboards In C Minor, BWV 1062: I. - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd660ae1f4b6b4e6f7d7b8decdf43feeea455e07d854498e1c5b321c6cf7c49. 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/HKI199648707.
Concerto For 2 Keyboards In C Minor, BWV 1062: II. Andante E Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6febb09e2645b62579de3bbe951f851967b8857c720f75ce51fceb6b652c714. 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/HKI199648708.
Concerto For 2 Keyboards In C Minor, BWV 1062: III. Allegro Assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee06b6448dc41756517978b4d99a65d6b4e9a3d59f2a084003e2a0cf70ab62db. 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/HKI199648709.
Concerto For 3 Harpsichords In C Major, BWV 1064: I. - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f71d7df3b099548d0acfdd85fd02bdd9e3af1cda28044fc7c1fd656db979c6. 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/HKI199648710.
Concerto For 3 Harpsichords In C Major, BWV 1064:II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cb11b030cdce9bbb00c7156becebd2cd903876c3b5333d0bfe1e974eb9cdc. 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/HKI199648711.
Concerto For 3 Harpsichords In C Major, BWV 1064: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce26818fe8365914af4c8950f517b36f5971e176ff6b3f15cd6e3f6077283bf2. 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/HKI199648712.
Concerto For 4 Harpsichords In A Minor, BWV 1065: I. - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6114095266eab2a9eb818cb5277c28beb52756dd3e928df543738ac1e0489cc7. 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/HKI199648713.
Concerto For 4 Harpsichords In A Minor, BWV 1065: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedda0ee5bbd620f551a36b9a47a3af4c9a03c7c36fec2975d3ae228369ab1287. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199648714.
Concerto For 4 Harpsichords In A Minor, BWV 1065: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6edb7af80be70f90b2e7f88e25cae7d27f92a818a471ab5868747d5ed157ae. 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/HKI199648715.
Bach, J.S.: Harpsichord Concertos, Vol. 2
Sinfonia in D Major, BWV 1045: I. Allegro
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Sinfonia in D Major, BWV 1045: II. Adagio e piano sempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd94cdedaa1fd1d38ab6985d9e7e6a9b7e9c79decacfee031054980527e1c46. 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/HKI199910902.
Sinfonia in D Major, BWV 1045: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbef6c26559bdc1a1c2edaf56b51fb4aa6a66d42003d5f92eddcfec6a62f8ff. 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/HKI199910903.
Keyboard Concerto in G Minor, BWV 1058: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7bb41cecbd07e2d313836c94541d91a907ba4166620b1c630b48959bcf05d6. 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/HKI199910904.
Keyboard Concerto in G Minor, BWV 1058: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfcc8d686e3e6f0df9f5531c28faed2e27b7b0104643a8964369f5f631d3eee. 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/HKI199910905.
Keyboard Concerto in G Minor, BWV 1058: III. Allegro assai
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Concerto for 3 Keyboards in C Major, BWV 1064: II. Adagio
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Concerto for 3 Keyboards in C Major, BWV 1064: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8525733ca5ebd807667855b6886404dcd8cc7416bd0c88a036a1657fb4a11dbd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:54:49Z), 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/HKI199910909.
Concerto for 3 Keyboards in D Minor, BWV 1063: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe082101a63d412f23f2fbaeb7a9c445dfcb4a3d3805aca2e5b976729fde8410d. 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/HKI199910910.
Concerto for 3 Keyboards in D Minor, BWV 1063: II. Alla Siciliana
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Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): II. Adagio
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Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): III. Allegro
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Johann Sebastian Bach: Harpsichord Concertos III
Concerto For 2 Keyboards in C Minor, BWV 1060: I. Allegro
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Concerto For 2 Keyboards in C Minor, BWV 1060: II. Largo ovvero adagio
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Concerto For 2 Keyboards in C Minor, BWV 1060: III. Allegro
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Concerto For 2 Keyboards in C Major, BWV 1061: I. Allegro
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Concerto For 2 Keyboards in C Major, BWV 1061: II. Adagio
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Concerto For 2 Keyboards in C Major, BWV 1061: III. Vivace
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Concerto For 2 Harpsichords in C Minor, BWV 1062: I. Allegro
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Concerto For 2 Harpsichords in C Minor, BWV 1062: II. Andante E Piano
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Concerto For 4 Violins in B Minor, Op. 3, No. 10, RV 580 : I. Allegro
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Concerto For 4 Violins in B Minor, Op. 3, No. 10, RV 580 : II. Alla Siciliana
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Concerto For 4 Violins in B Minor, Op. 3, No. 10, RV 580 : III. Allegro
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Concerto For 4 Harpsichords in A Minor, BWV 1065: I. Allegro
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Concerto For 4 Harpsichords in A Minor, BWV 1065: II. Adagio
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Concerto For 4 Harpsichords in A Minor, BWV 1065: III. Allegro
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Bach, J.S.: Harpsichord Concertos, Vol. 1
Keyboard Concerto in D Minor, BWV 1052: I. Allegro
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Keyboard Concerto in D Minor, BWV 1052: II. Adagio
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Keyboard Concerto in D Minor, BWV 1052: III. Allegro
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Keyboard Concerto in E Major, BWV 1053: I. Allegro
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Keyboard Concerto in E Major, BWV 1053: II. Siciliano
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Keyboard Concerto in A Major, BWV 1055: I. Allegro
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Keyboard Concerto in A Major, BWV 1055: III. Allegro ma non tanto
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Keyboard Concerto in F Minor, BWV 1056: II. Largo
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Bach, J.S.: Harpsichord Concertos, Vol. 3
Concerto for 4 Violins in B Minor, Op. 3, No. 10, RV 580: II. Alla Siciliana
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Bach, J.S.: Concertos for Two, Three and Four Harpsichords
Concerto for 2 Keyboards in C Major, BWV 1061: III. Vivace
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Concerto for 2 Keyboards in C Minor, BWV 1062: I. (Allegro)
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Heinrich Schütz: Musikalische Exequien & Nikolaus Brass: Voices
Minuet in G Major (Attrib. J.S. Bach's BWV Anh. 114) in G Major: Minuet in G Major (Attrib. J.S. Bach's BWV Anh. 114)
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Wenn Engel musizieren II (Weltliche Musik - Musikinstrumente von 1594 im Freiberger Dom)
Bach, J.S.: Concertos for Harpsichords, Recorders and Violins