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 0xc672f07126f481c7ad2957659d213fafa0057c28a2ac4b6d10abe46300695f9f. 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/d3d8d154-d11a-488d-89ff-3b9aeb1c4e08.json and https://artists.proofprofile.net/proofs/artist/d3d8d154-d11a-488d-89ff-3b9aeb1c4e08.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. P. Nagy for Piano)
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 0x6d85f6e3eaeb87520b23f5d8663cff14764f9493827cf6a3f4e8e6f67f91265a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295502 — a six-check JSON result.
A Guided Tour of the Romantic Era, Vol. 10
A Guided Tour of Nationalism in the Romantic Era, Vol. 3
A Guided Tour of Nationalism in the Romantic Era, Vol. 7
Serenade in E Major, Op. 22: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f050b902e71ad6b66f6e99dbb8f777d87e7fb37578aa6ff7a966a8fff697a. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199244005 — a six-check JSON result.
Slavonic Dances, Series 2, Op. 72, B. 147: 16 Slavonic Dances: No. 10 in E Minor, Op. 72, No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171c45280347e2f0f4590eb0f8748805c2128f2d0a8dbf39aaefc806a0fe28b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199244110 — a six-check JSON result.
A Guided Tour of the Romantic Era, Vol. 12
Toy Symphony: And Other Fun Classical Favourites
Music for the Royal Fireworks, HWV 351: IV. La Rejouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd33db83325dc8924171c4a5cadf190efbc7346475e043d8dd08f625cba8fee. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190516621 — a six-check JSON result.
Cassation in G Major "Toy Symphony": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb73e670306d0608521e4a6033b22df5779ccb6a7c7ad84e2e412eface10be6c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190813405 — a six-check JSON result.
3 Marches Militaires, Op. 51, D.733: I. Allegro Vivace in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0220946d1f18258587239e090b25f465aa455e0b7158f2737e28a04fc22d8f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199719301 — a six-check JSON result.
The Four Seasons: Violin Concerto in G Minor, Op. 8, No. 2, RV 315, "L'estate" (Summer): I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea464b20c2b74eff1b3b0b7327d81bfb8d29619657841b8cfbe16ed9e5c005f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190622804 — a six-check JSON result.
Carmen, Act II: Votre Toast, Je Peux Le Rendre, "Toreador Song"
Württembergische Philharmonie Reutlingen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c57cc65b4dfa37575c6a26ba0388044c036250b31c90de9405e9107ebfc5ac. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190942912 — a six-check JSON result.
Takako Nishizaki Plays Suzuki Evergreens, Vol. 1
Twinkle, Twinkle, Little Star Variations (After Mozart) [Arr. for Violin & Piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8bf10ce61c9ecab465c62c259595231c9576ebc7de0d3ca14fc73eecf7df65. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d42b09f0faf0cf638d9be8bcd1db7a2b4ab5ea513b3d15bdefb6019a7cfe40. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923302 — a six-check JSON result.
Song of the Wind (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a932576ea13a55db7a6cadc6a94ad7425dbe8981e2422cac25e91a1776e4feb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923303 — a six-check JSON result.
Go Tell Aunt Rhody (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e3506cf5dd34dc39052d9942d1e85af70c0497cc72bd1d7c0543fa60af674. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923304 — a six-check JSON result.
O Come, Little Children (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca7198893d89910630fa599de500efaa587e62574ecba29ce8d574be07f8609. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923305 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a01d36eb270e0a650eeb2abe4e4fa6762e5090607bf2f7aae536a2877d5a349. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923306 — a six-check JSON result.
Long, Long Ago (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f603da5c74323e87e2944190fdb9b37e69c317a42c3c54d0acee65f8db883b3. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923307 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1508b3d7b443398009f781d8f7aa885317665371c95b942271f32ef12244dfb4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923308 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019b02548f2ecf00a7023c15907e342b67028962631dc83025240e8e2687d8ab. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923309 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975477dbc64148d19aabb3281888ce57c34a993dfa4bb0f73083d4a3d6403394. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923310 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805190834b2ca4b3a99b1e0835b83e2ee07d960a32f80bae60c023a46270593a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923311 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63deddbed881cf22190f4d83992d1e6160f0ac721b764a5d232b6ba19ef9e380. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923312 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815755fb57da562201ec35401a10f01c7d178c701ac76fecf13bef1b26c78d09. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923313 — a six-check JSON result.
Suite in G Minor, BWV 822: No. 7, Menuet III (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d698ef207d63610fdc31be3ac9dbce03b1449b63499e0cdbca69e44d53a6f2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923314 — a six-check JSON result.
Suite in G Minor, BWV 822: No. 7, Menuet III (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505946f1b661e573652993015078f6318d17aa92a095a71a3e0fee74c60fd31. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923315 — a six-check JSON result.
Minuet in G Major, BWV Anh. 116 (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a38a1bd788c485cc8ae9065cf95ff42515e141aa961bc896935b1e0cdc511c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923316 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffdda69c0103e6d8c60c9a885bc89d9a80d382388bb14b6e93347409ce3fd8f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923317 — a six-check JSON result.
Minuet in G Major, BWV Anh. 114 (Attrib. J. S. Bach) [Arr. for Violin & Piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1690b2a1d4c7eb4b91c1febb25dde2ce470204e2ba39c7cfedd738ab48580be6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923318 — a six-check JSON result.
Minuet in G Major, BWV Anh. 114 (Attrib. J. S. Bach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd3b533788aaeee400045b2731f2003b27d216783d30673927008e68ab9462c. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923319 — a six-check JSON result.
Album für die Jugend, Op. 68: No. 10, Fröhlicher Landmann, von der Arbeit zurückkehrend (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe3efd5fd5779dc230634aeacb07440f253e034cb121443687bc32e5ecf3d84. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923320 — a six-check JSON result.
Album für die Jugend, Op. 68: No. 10, Fröhlicher Landmann, von der Arbeit zurückkehrend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf240acab21f230da8e10c38a54d36f5f36c68547713b679a0c63c72414e6b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923321 — a six-check JSON result.
Gavotte in D Major "Rosine" (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b7305d7352d68ce0f1913794c9f737e4b71eb6d991f703f2c056406b04f696. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923322 — a six-check JSON result.
Judas Maccabaeus, HWV 63: See, the Conqu'ring Hero Comes (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5112bdf475c1e6dba916e6f9885aba96bd6651eaa6478afd6771e164719486. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923323 — a six-check JSON result.
Judas Maccabaeus, HWV 63: See, the Conqu'ring Hero Comes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8205d3dab1ab4bc9e3b7d83a6880e3e2f368aa1d9e01f8cab6c5ffe388d4ebf0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923324 — a six-check JSON result.
English Suite No. 3 in G Minor, BWV 808: No. 6, Gavotte II (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073afd30a269409900d692c30c1c7aa39df3fe5be975c002ee8682d2fbba2e0a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923325 — a six-check JSON result.
English Suite No. 3 in G Minor, BWV 808: No. 6, Gavotte II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb9c24769efe02c664a1d562a681ddb83c598c0656b7d5a9a3d0f8edfa94ded. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923326 — a six-check JSON result.
Der Freischütz, Op. 77, J. 277: Huntsmen's Chorus (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c32b8dfa64fd21837f3b32b3087050d818a54667c63e01b35643765aa1e3a60. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923327 — a six-check JSON result.
Der Freischütz, Op. 77, J. 277: Huntsmen's Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0102aeb4280284ab0dc9f28a8c9ca8742f9e758ecc45abc65a23023dd5cfe0e6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923328 — a six-check JSON result.
Long, Long Ago Variation in G Major (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211ab5cb7426aef936242bf6ab8c53307d155754251fc06bbcb3298c073ba48. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923329 — a six-check JSON result.
16 Waltzes, Op. 39: No. 15 in A Major (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ccbf1071b15401b8b7b3a56b979f2a1a2239e1063239d18e47ae1f70b9eae. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923330 — a six-check JSON result.
Romanzen und Balladen, Book 2, Op. 49: No. 1, Die beiden Grenadiere (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e36d4de683c1d1eb5d43d91bdcf9e276d8b9abe7e49db8db75f6185aa6065fc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923333 — a six-check JSON result.
Le streghe, Op. 8, MS 19: Theme (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7b2b6b55ee815fa70b8ae70ac3555993e69ce5a79619bacff0a6edf6d010df. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923335 — a six-check JSON result.
Mignon: Me voici dans son boudoir (Arr. for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844f11fdeeccc74151785df65c6ad8fc56459f49ef6d1f3c2a9aaef7ba1c6ed5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923336 — a six-check JSON result.
Pièces de viole: No. 24, Rondeau (Attrib. Jean-Baptiste Lully) [Arr. for Violin & Piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1431f78f9d22afd020b9a0a6d0f6e407785d531566dc46d45c23f8e287450646. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190923337 — a six-check JSON result.
KLEBE: Poema drammatico / Widmungen / Zornige Lieder ohne Worte
Klebe: Glockenturme / Wiegenlieder / Feuersturz / Sonata, Op. 4
Variations In E Flat Major On A Theme By Schumann, Op. 23: Variation 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69048697dbb9a3c1377aa9d85a243bb340f66fd671f13e0000744107174edbab. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ed5e0e4bd96cc895db66bee24a59ef773b9857e0cffd14112edf9c76a578b7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624312 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7858633e512841e91a08a70cc203a77b5420cadf8b7041e5edae529d6120f4ef. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624313 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d70ede3ec85ff439ea41408099181122dfbbbc098e2a7ee460a766ca856435a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624314 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3901f7ee9c1874d413b264db74d3fa8a5bb78432f7b7d61e96ac2a6fb20a15ed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624315 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a63bfa24e120f083f60dd9ebe7c106fc9387e8e013b8662a480212d28a5286. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624326 — a six-check JSON result.
Souvenir De La Russe, Anh. IV/6: Die Nachtigall (The Nightingale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b2b9ffd47069d66d30f11cff442ddb839855e70e8f62939be780568762115. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199624331 — a six-check JSON result.
Slavonic Dance No. 1 in C Major, Op. 46, No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e1cd32faee32f06fe75966812c93a43606425cab75fc978fb10cfa22eadeb8. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199604101 — a six-check JSON result.
Symphony No. 2 in D Major, Op. 73 (version for piano 4 hands): I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71827d7eaf1ebad4e3f67f1ac86575d8789b4dbb03b29ece27a833142f2b1d78. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190154401 — a six-check JSON result.
Symphony No. 3 in F Major, Op. 90 (version for piano 4 hands): I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd8edab86bfcf49ccb8642ab6fce70d386413e001038b2e5b098ae3d077a2d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190154405 — a six-check JSON result.
Symphony No. 3 in F Major, Op. 90 (version for piano 4 hands): III. Un poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c321cc1ac3155dbbba8e4b5caceba940be9abe03d1ccc32f0915bd5ab41caf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190154407 — a six-check JSON result.
Symphony No. 3 in F Major, Op. 90 (version for piano 4 hands): IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc16b65e489eba40e9b7533eff72ca20640cf606822dfdfd3198b13c0ce973ad. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190154408 — a six-check JSON result.