The Cappella Istropolitana is a Slovak chamber orchestra based in Bratislava, Slovakia. Its name is derived from the Greek name for Bratislava, Istropolis (city on the Danube). The orchestra was form
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 0x22a942df1dc1d0af325b252fb1055716ac61b72967dbabe63604ee1b34951863. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20600ddc-a7d9-43de-ae94-79af83799d72.json and https://artists.proofprofile.net/proofs/artist/20600ddc-a7d9-43de-ae94-79af83799d72.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wie lieblich sind die Boten aus dem Oratorium "Paulus"
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 0x9120f77d2c7c421f03428b62eaff267d5ce4cf5223f751f67c688d58cb3da5f1. 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/ATP571231030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7d81fd8fe0009ce82a0e486c476c0c7dbede1d60a94d3ef8c6dcc3de6badf9. 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/ATP571231120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb944cb1963e92cfde0e2d54e2b40885990ea7b1d1b425e079dc4bff39421fb4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ATP571231190.
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
Concerto in D Major for Trumpet, Strings & B.C.: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c38d530a3a02348ec21b8f5763d1e78a2c782ac8df63478bbca291e55dc615. 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/NLY331011704.
Concerto in D Major for Trumpet, Violin, Strings & B.C.: II. Vivace
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Ouverture in D Major for 2 Trumpets, Strings & B.C.: I. Ouverture
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Great Composers in Words & Music: Wolfgang Amadeus Mozart
Stille Nächte - Weihnachtsmusik aus Europa, Vol. III - Silent Nights
Lieder der Freiheit - Treue Tyroler reckn`s Pratzl nit
Mitten im kalten Winter - Weihnachtsmusik aus Europa, Vol. II
Pulchra es amica mea aus der Marienvesper
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Italian Masterpieces for Clarinet or Basset Horn and Orchestra
Beethoven im Gespräch ... zerlegt, besprochen, wieder zusammengesetzt, musiziert
Mendelssohn: Concerto For Violin, Piano & Strings In D Minor
Wolfgang Amadeus Mozart - Bläserkonzerte
Horn Concerto in D Major, TWV 51:8: III. Allegro
Carl Philipp Emanuel Bach Chamber Orchestra
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Horn Concerto in E-Flat Major: I. Con discrezione
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Horn Concerto No. 1 in D Major, Hob. VIId3: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6966d058fcf87bbdf92afa6f537361ba4e6fdbcd58cc3c4734972ff1c21f39. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/NLY331701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42159a94c3db34391825546e7c361c3cd3a1ffb99f5d5423a85b930b367cc2cd. 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/NLY331701525.
Horn Concerto in B-Flat Major: III. Menuett
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Horn Concerto in B-Flat Major: V. Bourrée
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Concerto No. 2 in F Major, RV 539: II. Larghetto
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Concerto No. 2 in F Major, RV 539: III. Allegro
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Horn Concerto in E-Flat Major: II. Larghetto
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Concerto concertant in E-Flat Major, Op. 3: I. Allegro
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Concerto in E-Flat Major: II. Romanze. Adagio
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Concerto in E-Flat Major: III. Rondo. Allegro moderato
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3ef4250dbbfde2d2e7314768580ffbbfce86433de2d5ef51505fe46db588ac. 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/NLY331701544.
Concerto in E-Flat Major, QV 5: 9: III. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76189b8b8552fcd63abe7917429a654d558f7f84b48cb5185ea8015abb5f3b30. 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/NLY331708775.
Trumpet Concerto in D Major, FaWV L: 1: I. Allegro
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Trumpet Concerto in E Major, S.49: I. Allegro con spirit
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Trumpet Concerto in E Major, S.49: III. Rondo
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Concerto for 2 Trumpets in C Major, RV 537: I. Allegro
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Adagio for Strings, Op. 11 No. 2 (From Platoon & Elephant Man)
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Mendelssohn: The Hebrides Overture - Violin Concerto in E Minor - Symphony No. 4 in A Major, "Italian"
Violin Concerto in E Minor, Op. 64: I. Allegro molto appassionato
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The Hebrides Overture (Fingal's Cave), Op. 26
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Los Grandes Genios Mozart - Divertimento No. 7
Mozart & Weber & Crusell: Concertos For Clarinet And Orchestra