Amadeus Chamber Orchestra of Polish Radio
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 0x38ee046354e27ee1fccbabbf17e062196c7243921302699eb5528b31cf785a5a. 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/f3f2eea8-a6e4-4d70-a147-07f6de5cf20f.json and https://artists.proofprofile.net/proofs/artist/f3f2eea8-a6e4-4d70-a147-07f6de5cf20f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Violin Concerto No. 3 in G Major, K. 216: II. Adagio
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 0x0e0f70bfb125c5fb28ba08dbe6e24ae6cadc6d0ee54dec9180a3573378544fd2. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/HKI199282102.
String Quartet No. 12 in B-flat Major, K. 172: Ii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa90464d4c2f24b636731e407fdee23c37b485960bad1deb0d70e54255f158. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI199494702.
Clarinet Concerto in A major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd82c111e5540383f6662d81160367bd6f8fe599fc502363736c9990855d68a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI199273708.
Serenata for Four Orchestras in D Major, K. 286, "notturno": I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ddae2d515e2b752d7b0b1b5050fa712b55cb3a2e15cc7f585a8c21307d8cdb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/HKI199274617.
Symphony No. 40 in G Minor, K. 550: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882cf810d209a1e21e35707cd18c47c172e4acb64c40097d88800fb3e36ff929. 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/HKI199281202.
Violin Sonata No. 32 in B-Flat Major, K. 454: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e83eb87971138223e852c8d81695a651ba144ad943d15d52c5c3e6b1d24b3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKI199625702.
Piano Sonata No. 14 in C Minor, K. 457: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd971336a70a383b3ba729b4925c2112ac7f48415334e28e3de65586e69ffae7f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/HKI199277703.
Horn Concerto No. 2 in E-Flat Major, K. 417: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc94a840024a469b2720d5a052d31b37ee2714098263f1ccddcd631690addc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI190712104.
String Quartet No. 21 in D Major, K. 575, "prussian No. 1": Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a229556dcb7f90f68b3f4a66e9f9f144dc7ddf8473f023e554dd9792e8b2f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/HKI199494710.
Symphony No. 28 in C Major, K. 200: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ade2e8a78acbc39fdd1ce6573944f115827d1b568f9ef84d1c302614a769e0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/HKI199281206.
Violin Concerto No. 5 in A Major, K. 219: Ii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d044e13c13635d78db87c643de6dd604eddb56f4e2a25eaeb2c9e29997f0964. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKI199275802.
String Quintet No. 3 in C Major, K. 515: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dbd24078c1eceaa85fe705a8dc74aa6a8e14934e737f5feddaef2f616f4b88. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HKI199279308.
Piano Concerto No. 6 in B-Flat Major, K. 238: II. Andante un poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451996f3e77d7bedbfbd3ffc9887fa815d30787abfcb1f7cf5ed32f270bf61b. 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/HKI199276405.
String Quartet No. 20 in D Major, K. 499, "hoffmeister": Iii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b7724ab85e0f70841b8b0f0d40d6aa54f28b9b7f40369c8a82db15190d034b. 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/HKI199279003.
Flute Concerto No. 2 in D Major, K. 314: Ii. Andante ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21205fdaa3385be72e31dca86f0c069d1f0e9ae8ac752889a0202f6aa7120ccb. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKI190325102.
Piano Sonata No. 17 in B-Flat Major, K. 570: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c6768a9e5d93798e8514b09a4db21031c2ad6f5791ee783431e05324eab171. 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/HKI199277605.
Piano Concerto No. 16 in D Major, K. 451: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52e23fd08e28fc6ebca22826d3ae0d8e53add5b895c904608f9450583fb21e6. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/HKI199276211.
Sinfonia concertante in E-Flat Major, K. 364: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec51c45d4f738cbd08c44afa0419b19aa19052ea0cc9ffb8952d2c9dbe8b3b1. 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/HKI199281805.
Symphony No. 39 in E-Flat Major, K. 543: II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8d797893bc8b1a80af07008070b714d432990ea791d48518a1f8d22c21273a. 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/HKI199280709.
Piano Concerto No. 9 in E-Flat Major, K. 271, "Jeunehomme": II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327c613d2ac3500aa658d6d33ee55c4874c2b7a91eb8c73be30a450b9a4f7d14. 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/HKI199276802.
String Quartet No. 22 in B-Flat Major, K. 589 "Prussian No. 2": II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234a4ca154da13315e1cb96b9d5b425c555e378f06053fde53805c8c6a8ac41c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HKI199278702.
Violin Concerto No. 4 in D Major, K. 218: II. Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976112166100b2d74f76ee08cb345fb4168871b4f4fe868b53e03109c46dcbb8. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/HKI199281802.
Serenade No. 7 in D Major, K. 250, "haffner": Ii. Andante (Cadenza by P. Breiner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d2d21a33b1834f30f7e205f91a15604ac2b7cbc33598f450f3e20e35d0e9ba. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/HKI199275203.
Symphony No. 37 in G Major, K. 444: Ii. Andante sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052c1aeea27a39189ee5d8c25a62faa9ed0a23a10729b9baac23cfbd22e0f64a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/HKI199495310.
Così fan tutte, K. 588, Act I Scene 2: Terzet - Soave sia il vento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c577058320ba017cb97177354dd778cf0bbaccec23051cdda50a7a6e16c785. 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/HKI199092719.
Piano Concerto No. 23 in A Major, K. 488: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543cf7c80e36778f3c88fde8c5e4392179515504c2e8ae098bf5b1991abc3d46. 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/HKI199276902.
Oboe Concerto in C Major, K. 271k / K. 314: II. Andante ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc2ff1beed70c45d867cebe65a6d981ea7a37fb00023414a829ffad88eca611. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HKI199273705.
Clarinet Concerto in A Major, K. 622: Ii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd82c111e5540383f6662d81160367bd6f8fe599fc502363736c9990855d68a. 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/HKI199273708.
String Quartet No. 15 in D Minor, K. 421: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb645db50915c2219d60eceed4ce13b9ea7b714040a24af7dc002bf5036c9081. 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/HKI199494810.
Violin Concerto No. 3 in G Major, K. 216: Ii. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0f70bfb125c5fb28ba08dbe6e24ae6cadc6d0ee54dec9180a3573378544fd2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKI199282102.
Serenade No. 13 in G Major, K. 525, "eine kleine Nachtmusik": Ii. Romanze: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e719cfca95da0ebc40d6ac033333a217864965629cf43f4518b091a2acad0. 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/HKI199274702.
Concerto for Flute and Harp in C Major, K. 299: Ii. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d353ac06dc2091a504a012d0f66a4967a258c9df92ea4b69ecd8815c066d99. 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/HKI199274202.
Symphony No. 36 in C Major, K. 425, "linz": Ii. Poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38f36857d85d381113a600c275f0c78e13759f4b5a75fce113612119818b95a. 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/HKI199281002.
Horn Concerto No. 2 in E-flat Major, K. 417: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc94a840024a469b2720d5a052d31b37ee2714098263f1ccddcd631690addc. 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/HKI190712104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa90464d4c2f24b636731e407fdee23c37b485960bad1deb0d70e54255f158. 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/HKI199494702.
Piano Sonata No. 5 in G Major, K. 283: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b295271b17c9e56b3e75d1776ac7f62ca6b54399c5dfe36e855e414b5462d2. 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/HKI199277508.
Serenade No. 9 in D Major, K. 320, "posthorn": Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f2ec5318acd67f2c1e254531d6d89c94c5966b2010fbac3dd53a56eaff4a1. 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/HKI199273505.
Piano Concerto No. 21 in C Major, K. 467: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d0091d0c82b8447ac39e82be63492bb7aa23b11f1251343c6fdfb485832ac. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/HKI199276702.
Symphony No. 28 in C Major, K. 200: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ade2e8a78acbc39fdd1ce6573944f115827d1b568f9ef84d1c302614a769e0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKI199281206.
Violin Sonata No. 32 in B-flat Major, K. 454: Ii. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e83eb87971138223e852c8d81695a651ba144ad943d15d52c5c3e6b1d24b3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI199625702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ddae2d515e2b752d7b0b1b5050fa712b55cb3a2e15cc7f585a8c21307d8cdb. 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/HKI199274617.
Piano Sonata No. 14 in C Minor, K. 457: Ii. Adagio
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Symphony No. 40 in G Minor, K. 550: Ii. Andante
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Piano Concerto No. 5 in D Major, K. 175: Ii. Andante ma poco adagio
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String Quintet No. 3 in C Major, K. 515: Ii. Andante
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Piano Concerto No. 25 in C Major, K. 503: Ii. Andante
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Serenade No. 12 in C Minor, K. 388: Ii. Andante
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Symphony No. 14 in A Major, K. 114: Ii. Andante
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Horn Concerto No. 4 in E-flat Major, K. 495: Ii. Romance: Andante cantabile
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Vesperae solennes de Confessore, K. 339: V. Laudate Dominum
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Sonata for Keyboard and Violin No. 23 in D Major, K. 306: Ii. Andantino cantabile
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Piano Concerto No. 23 in A Major, K. 488: Ii. Adagio
Piano Sonata No. 12 in F Major, K. 332: Ii. Adagio
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Violin Concerto No. 5 in A Major, K. 219, "turkish": Ii. Adagio
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Violin Sonata No. 17 in C Major, K. 296: Ii. Andante sostenuto
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Horn Concerto No. 3 in E-flat Major, K. 447: Ii. Romance: Larghetto
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Concerto for Flute & Harp in C Major, K. 299: II. Andantino
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Violin Sonata No. 26 in B-Flat Major, K. 378: II. Andantino sostenuto e cantabile
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Piano Concerto No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
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A Guided Tour of the Classical Era, Vol. 2
Heroic Horn: Best Loved Classical Horn Music
Bacewicz: Music for Chamber Orchestra, Vol. 3
Laks, Weinberg & Ewelina Nowicka: Orchestral Works
Polka dziadek (Arr. A. Palma & K. Dębski for Guitar & Orchestra)
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Weinberg: Chamber Symphonies & Flute Concerto
Beethoven, Debussy & Korngold: Works for Orchestra
Weinberg: Violin Concertino, Symphony No. 10 & Rhapsody on Moldavian Themes
Horn Concerto No. 1 in D Major, K. 412: I. Allegro
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Horn Concerto No. 1 in D Major, K. 412: II. Rondo: Allegro
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Horn Concerto No. 2 in E-Flat Major, K. 417: I. Allegro maestoso
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Horn Concerto No. 2 in E-Flat Major, K. 417: III. Rondo: Allegro
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Horn Concerto No. 3 in E-Flat Major, K. 447: I. Allegro (cadenza by J. Muzyk)
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Horn Concerto No. 3 in E-Flat Major, K. 447: II. Romance: Larghetto
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Horn Concerto No. 3 in E-Flat Major, K. 447: III. Allegro
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Horn Concerto No. 4 in E-Flat Major, K. 495: I. Allegro maestoso (cadenza by J. Muzyk)
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Horn Concerto No. 4 in E-Flat Major, K. 495: II. Romance: Andante cantabile
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Horn Concerto No. 4 in E-Flat Major, K. 495: III. Rondo: Allegro vivace
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Barbara Kaszuba - My Music (World Premiere Recording)