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 0xbd5e609bbd00ec3ccba2f4c54f827ffef9dd8847451456a05569887d50b38729. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a960ad13-d43e-410a-834a-fc1a15eef8f0.json and https://artists.proofprofile.net/proofs/artist/a960ad13-d43e-410a-834a-fc1a15eef8f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Divertimento in E flat, K.252: 4. Presto assai
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 0x3a8281e20fa2e4e1e6b8c0046a4ad9cfd9a7101033010142fbeaeca4b330ea23. 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/GBF078842712.
Mozart: Die Entführung aus dem Serail Harmoniemusik
Serenade in B flat, K.361 "Gran partita": 1. Largo - Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13785b7e9e224bbd741671f2047487aed7c857f6fe3212df599a3a4b54ddb861. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBF078711411.
Serenade in B flat, K.361 "Gran partita": 3. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9e4fc8fff09efbab4658b4b5c2f1bcef927300f376199b139b0d99807baf2d. 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/GBF078711413.
Flute Quartet in D, K.285: 2. Adagio - (attacca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2677c2bf55c21439770ab60778fa0f1beb9b383efb66cdcb7232cee7d406c6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506900191.
Rondo in D Major for Piano and Orchestra, K. 382: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3c48a3c98e3cf488adee17dba254b68d256a2a1bffd4d33076143336d762e. 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/NLA509001105.
Les petits riens, K.app.10 (ballet): No. 9 Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1afb75871b774c87759f16679810690dd09482ad3c18f4848eb55c4d7b32c89. 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/DEN960532902.
Horn Concerto No. 2 in E-Flat Major, K. 417: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0356c0fcc22a3c75180b627e0632df6c5439471baf9190a98914974746fed5. 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/GBF078300182.
Academy of St Martin in the Fields Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ea79f17178fb1f393e07e1588785bdf2e5abb9e807f0521a46d0635617dd6. 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/NLA509300113.
Eine kleine Nachtmusik, K.525: II. Romance: Andante (arr. piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6df43dc9724cd70e0d5a918673bb7665d998c02ed9d8838b75782f6659f62c. 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/GBUM71801229.
Wiegenlied, K.350 - Arranged By Nicholas Ellis: Schlafe, mein Prinzchen, schlaf ein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99caa7d55af6b8cf879037352267184258be70c3c9977bafbddbd6c6880c35b6. 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/DEN961300500.
Piano Sonata No. 11 in A Major, K. 331: 1. Theme (Andante grazioso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d95af1ee8bbdbbe90a481d02a56b5cc25d4964afb6568b14090848a4d9b2c9. 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/GBF077311901.
Piano Concerto No. 4 in G Major, K. Anh. A16 (K. 41): II. Andante (After Raupach, Op. 1/1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66541488080937af6d93271eea30856682cde8952ffef529e30f827799da7906. 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/GBF078710772.
Les petits riens, K.app.10 (ballet): Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e0110275fb9c18019322a5bf34aa56973a5bec224d7a23c227bd6fc73b202. 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/GBF075641202.
Serenade in B-Flat Major, K. 361 "Gran partita": VI. Tema con variazioni. a. Tema
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2554c5ed7cea03bc0a52af75e0e398907e86d9aa4031cc192e6841b00e7e1bab. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEF058603337.
Piano Sonata No. 12 in F Major, K. 332: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b1871be9052b9a8c04985ffa403ec64337ec9f66c969708757b328ee1807aa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059003852.
Symphony No. 50 in D Major, K.161/163: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8864d598abe11e840f66dd4c5e3a95ad6d4fd52b1c9b1d8133d67212022e13c4. 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/GBF077910272.
Requiem, KV 626: 6f. Lacrimosa (arr. piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38efbb1130e5a67188b0806a8c751b2734722401006cf59b9c57a96bf1708ee. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBUM71900822.
Divertimento No. 5 in D Major, K. 205: 3. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9ecb7dab293fe1288736723d3d2b91c465de35890f0eced5f363b20860aadb. 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/GBF077310473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c82820890d83a4558422ec1354502f0296aa256b66d3c29e97aeac17188804c. 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/DEF055610162.
Quintet for Piano, Oboe, Clarinet, Horn, and Bassoon in E Flat Major, K. 452: 1. Largo -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f295059046336e6daa0cd9a8e835865b5cb0ea7c0551106ac86ed8b898e02a. 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/NLA508640601.
Harmoniemusik from "Die Entführung aus dem Serail", K.384: 2. Hier soll ich dich denn sehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5b3dca01da670d07ea429e5e98d740ab59b71292720618bdfff8e5e44e3f63. 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/GBF078841702.
Cassation in B-Flat Major, K. 99: V. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa401145792033d27d7f5ce6cb29e965eb9f864b47b1796f21b89e84b1023aaf0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLA508642011.
Piano Sonata No. 11 in A Major, K. 331: 1e. Variation 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601f270c99bb3c2d5e1a17d6075729fb8cb25b04bd424195c06edfa70a3a48ba. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBF077311906.
Symphony in D No. 50, KV 161/163: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171ae6f1e295a40c22c620d43632861a3555faaeccfde3acde9d72f569ace1a4. 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/NLA507300966.
Divertimento in D, K.334 - Arranged by David Overton: 3. Menuetto - Trio - Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe9e979e599b20e59739c445f47534f84021e0ac5a6f27a43e832cd458e2538. 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/DEN960600750.
Clarinet Concerto in A Major, K622 (arr. piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b81bc6c0251abc30b1a9c273e546fc33733864703236eda6d802e3014f10ba5. 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/GBUM71905125.
Violin Sonata in C Major, K. 403: II. Andante –
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410af887e47c80f02ae58092cd437e7cf7c21cb3ac9e1934bc3e4296de0ca3ab. 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/NLA509001809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4961a69b10fb6aa7ffa4ccc7d4dbf2364f1196f00e816234b4971e7e2e23c4f3. 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/GBEKZ0500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2677c2bf55c21439770ab60778fa0f1beb9b383efb66cdcb7232cee7d406c6. 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/NLA506900191.
Concert Rondo for Piano and Orchestra in D. K.382: 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3c48a3c98e3cf488adee17dba254b68d256a2a1bffd4d33076143336d762e. 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/NLA509001105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1afb75871b774c87759f16679810690dd09482ad3c18f4848eb55c4d7b32c89. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEN960532902.
Horn Concerto No.2 in E flat, K.417: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0356c0fcc22a3c75180b627e0632df6c5439471baf9190a98914974746fed5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ea79f17178fb1f393e07e1588785bdf2e5abb9e807f0521a46d0635617dd6. 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/NLA509300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6df43dc9724cd70e0d5a918673bb7665d998c02ed9d8838b75782f6659f62c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBUM71801229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99caa7d55af6b8cf879037352267184258be70c3c9977bafbddbd6c6880c35b6. 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/DEN961300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d95af1ee8bbdbbe90a481d02a56b5cc25d4964afb6568b14090848a4d9b2c9. 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/GBF077311901.
Piano Concerto No.4 in G, K.41: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66541488080937af6d93271eea30856682cde8952ffef529e30f827799da7906. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBF078710772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e0110275fb9c18019322a5bf34aa56973a5bec224d7a23c227bd6fc73b202. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075641202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b1871be9052b9a8c04985ffa403ec64337ec9f66c969708757b328ee1807aa. 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/DEF059003852.
Andante for Flute and Orchestra in C, K.315
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ba2430baaa2fc693b5ae53d9ffc7229cb473ab7e9bc58deb89830d1fceab6. 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/NLA507528207.
Piano Concerto No. 21 in C Major, K. 467: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e889846605b3966dd078410fc120599696059de206092f85e3c3c9a1e14099. 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/DEF056100245.
Clarinet Quintet in A, K.581: 2. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baaa90dbc2b4bbca33f56986d81cdefc545c2e19387f4d92f1ed3561b074c74. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITUM71601170.