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 0xe36f619f5ed9a1c9b53b479584327219cb38cc30e489b08016ef6593fa9754f6. 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/a370dddf-cc41-4330-809a-784f324cf061.json and https://artists.proofprofile.net/proofs/artist/a370dddf-cc41-4330-809a-784f324cf061.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
J.S. Bach: Little Fugues and Little Preludes With Fugues
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 0x8fd2ac97ce09d3e94e71e3fd6a4c255a87da645f9ee3ad31af7ce2f9b6f4cbd6. 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/QMT2Q1201002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb99802b451362ff7e4c4b92acb5c201ea0ed0bd7839093ffb87e56535258af5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QMT2Q1201001.
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
Piano Sonata No. 11 in A Major, K. 331: III. Rondo Alla Turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8432171699f1b47b5a6a5d61ae75a3ed15914dc4990b9b3dce38d64e9e4cbf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1220020.
Grieg: Selected Lyric Pieces for the Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf8d246c637d455e8cd439ff08ed5f250a1bf111e067499e8fa2d69f7ac496a. 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/QMT2Q1212002.
Chopin: Selected Works for Piano, Book One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107772af1de62057eb0a0914e782111d941d2b3b107a0077be2a047509697c98. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1207001.
Burgmüller: Twenty-Five Easy and Progressive Studies: Opus 100, for the Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5078867b79f2fb16bf2c738885abbb4364841ae2e18d667a23684ba67ccfed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1206002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89840513b53e31b0171f029df83649150276193333b54062330156a87a5a534c. 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/QMT2Q1206003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c44fc6cfa6dbb0dadcee14368fef32772d78f22b65021e5e1c57fc49b4eaa1. 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/QMT2Q1206008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beec9628b044394712836f054bc91319ad232f04bcdc016ae683df8092bae44. 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/QMT2Q1206009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70be9fe9fb97c3e3c67dbf6087f12c62ccb8426cd0d73f6181ad51b1c4c398df. 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/QMT2Q1206013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541fa3035bfd7882577d2a5da51a429a83a412e6f0c8b09712b86599a463b523. 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/QMT2Q1206016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85f07cf5f5f1ed2ae7b9c3d53359d8c6430037bc15c2d0cc34dcd65f6bb7224. 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/QMT2Q1206017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45a8b97069591e5e51e9d2c59fd5529705a2ff0d305c906cb14d241b7d11e21. 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/QMT2Q1206019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e8a29b662969e61769ff9ea20420f923285e00f45ed3598121726f786787d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1206020.
L'harmonie Des Anges (Harmony of the Angels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c73d7e01486ebfebaa3d879c594ae12cd93cd15e03b0c810651839df601ca2. 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/QMT2Q1206021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc306a1fdfc12bcec7dd6615d6e74a33bf9421721778d0f1175cd1446112670f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMT2Q1206023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51dec0165c83fb13bb44e410c5fc0c8b7de9bc554aa834008add80bc221822f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1206025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef5e2dba6e9796dc0b12255c731ba4a3e52e9ccfa88dd35726eb889b8259add. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:04:19Z), 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/QMT2Q1206004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779a223b435cd063b52ecae48bd507e12d8fb9c55fc2d48bb506a0988370dc8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1206012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bdda2f07675cf7da4ec029ada222481ab23f59a1d06c0739a115417d12eaae. 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/QMT2Q1206001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03b13180304001fb16afb18225fa4ec6c0781cf8202f1719bc183484dfcabce. 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/QMT2Q1206005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22032c97e9462af6f259d2e4030457c38421f8f8c78a34af91877d6878e2bb51. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QMT2Q1206006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14603022f14afcd7b13940f3432b21e64f5ff2de80718c9326037a6cdf5e65b7. 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/QMT2Q1206007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84d1ab4e3b486400b837b992500863fa42f7a0c9f32ae14bc454f0713cc0a0e. 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/QMT2Q1206010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7917b430d529ee4ca913f8990e13cb8eab1a7d35e135f4826af3f22e282f136c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QMT2Q1206011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262312e714fc541cc6e61efc9e0a2080ebb090748e73e85b830a8ff94840f26. 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/QMT2Q1206015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b2b13279b45d4a76ef54bf292dccef0693a8fdb20cd9eb68e08acb337a2d30. 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/QMT2Q1206018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d60ee9ba34ea444c6a7577d49b6ab8e8e829f60747b5e84e388bf6821ee1c8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QMT2Q1206022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f362d0a6b6aac5359afe56f8666368ab94ea8739f3d23ad9c3bbdf6086093b9. 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/QMT2Q1206024.
Schumann: Album for the Young — Opus 68, for the Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d84eb3b03f826205e16ef1588e890b4c7bb6c9a0c5e7c44adfeb84af6c02e. 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/QMT2Q1222002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511b7b34210bfad5dcc703bb1b2457392cb7a539309160af38c819a35afbda97. 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/QMT2Q1222010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6180ca5ed18218f3bf76fbf21fa8ab890b3703a341478a490e972d94f518237. 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/QMT2Q1222016.
Beethoven: Selected Works for Piano — for Intermediate Through Early Advanced Grades
Sonatina in G Major, Anh. 5, No. 1: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc00eb451e15d328ebe2f76d3694d86cec2bbbe870b879ed2f43e9db98a2b48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1205001.
Sonatina in G Major, Anh. 5, No. 1: II. Romance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c283d701e64eb8c512b0029667b56978b0246e6405cbd180673c4b088e77bc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1205002.
Sonatina in F Major, Anh. 5, No. 2: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd302e368b7351e0e36809b200c5ad7c3e45e860009f30c626db228561ae709f6. 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/QMT2Q1205004.
Sonatina in F Major, Anh. 5, No. 2: II. Rondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73e901a0fc8cd1319134037bb2467124362c7d328c316cf6eb5a748e4f3036. 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/QMT2Q1205005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85daea2c51311cdef146f7326082116c83968e5a1ea8747cbcfff99ec8c65a0b. 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/QMT2Q1205014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86252d836009ed2f9811762ddad19cefd3482964300ca704c94b86f22cee557. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMT2Q1205015.
Six Variations On "Nel Cor Piu Non Mi Sento" (from the Opera "La Molinara" By Giovanni Paisiello), WoO 70: II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b2fe704c6041c4d4d35746e939e92f6775b0c5d08fe2cd42ab1425ed609b5e. 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/QMT2Q1205020.
Six Variations On "Nel Cor Piu Non Mi Sento" (from the Opera "La Molinara" By Giovanni Paisiello), WoO 70: III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bad60bc03eeef7e76130cb3cc00d0c37bf6f5ad66fd253776932b8363f718c. 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/QMT2Q1205021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e8fe6a24346dd39fc85de1d24342385590d7bb755ed79f5a2b33e73e65b379. 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/QMT2Q1205016.
J.S. Bach: Selections from the "Notebook for Anna Magdalena Bach" & "Two-Part Inventions"
Notebook for Anna Magdalena Bach: Minuet in G Major, BWV 114
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72e65895bba43546519b142a6977c932cbd571f7d2095fabd36dd34ff6e15c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMT2Q1203001.
Notebook for Anna Magdalena Bach: Minuet in G Major, BWV 116
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa5bb8a2d4c8c5c393469857d3711e1f958b31d6dd3c8fe16a0a8eface868b. 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/QMT2Q1203003.
Notebook for Anna Magdalena Bach: Prelude in C Major, BWV 846
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa8e452efb29d53723a57a441bf1fa69cf931e6a135782c6b25b71897125aa. 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/QMT2Q1203014.
Two-Part Inventions: No. 13 in A Minor, BWV 784
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9d9355b319b5f75e744484343f7e889202dadfe9bb015a2dce25cb672b567. 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/QMT2Q1203028.
Clementi: Six Sonatinas Op. 36, for the Piano
Sonatina in C Major, Op. 36, No. 1: II. Andante
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Sonatina in C Major, Op. 36, No. 1: III. Vivace
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Sonatina in G Major, Op. 36, No. 2: II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f32c2f42f26174afb75765178a22f024555f3163c8f84d7ce2e5f378a616532. 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/QMT2Q1209005.
Sonatina in G Major, Op. 36, No. 2: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5143a5c7872a5e9b65be06054c46db1c37930b7c8e28f25bca52fdc591e09dd. 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/QMT2Q1209006.
Sonatina in C Major, Op. 36, No. 3: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f257db0ec1e3ef3f51d18be91790a71326ed368b428b58676a976256e47ea. 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/QMT2Q1209009.
Sonatina in F Major, Op. 36, No. 4: I. Con Spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e38642927d327528dc09cc60c765d6c7e7985200fff177592615ca806a7abcf. 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/QMT2Q1209010.
Sonatina in C Major, Op. 36, No. 1: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87899c1c5e93244ae0380235d513317257b9b4fab71bc2e802103880569bed26. 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/QMT2Q1209001.
Sonatina in G Major, Op. 36, No. 2: I. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced3120c726b4cf50bd61b56e7881a6e73b80c7bd7b6bb857482ccb9bf19430d. 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/QMT2Q1209004.
Sonatina in C Major, Op. 36, No. 3: I. Spiritoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426bba6c932a19d284470f3dbd02b3dff56f261da5b4def72a296b5ef07e6914. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMT2Q1209007.