right|250px|thumb|Sheet music cover of "Sunflower Slow Drag" Scott Hayden (March 31, 1882 — September 16, 1915)MusicSack however gives March 3, 1882 while agreeing with the rest. was an American compo
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 0xe282f3e8a2a8c7502b3ab7d407a1ecdd9d199ac6ef9133c5cc8a76acfd9a735a. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d032f5c1-c2ab-4266-99f5-30d70053787f.json and https://artists.proofprofile.net/proofs/artist/d032f5c1-c2ab-4266-99f5-30d70053787f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scott Joplin: 30 Works for Piano, Book Two (Recomposed by Luca Astolfoni Fossi)
Joplin: Rags, Marches, Waltzes & Other Piano Works
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 0xfedc250a0e46c2d0faf780751a47fac4f0cd94e2dc5a6300db26ca64eedb3d26. 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/ITBZ82300657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7668143670cf9d876973c79d1eb01312564677d11db7c044bbb2324651508d. 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/ITBZ82300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5b8784f23c6d048221d7134670f9d7252dd10940419be20218466776bb07a2. 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/ITBZ82300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1519f335a1809045ca6fe8c900502bd62ec9fae8f99e3d47eb203c55b2430e. 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/ITBZ82300658.
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 0xe9a9585959005dd174897427244d2b54ef2a463bc45d41b6b05f9f09c0997599. 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/ITBZ81800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482736aceccda53ecf3777ab5769e465425265a8775304919bb0de0b425e1ffb. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ITBZ81800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95053f5342a4d0a673b2350954e2f7cceb0243830e80ff8220934bd63de85764. 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/ITBZ81800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a3c650287ec09de7bb0ef6ab0b1d1fea0494642005c039324580d4e6d16017. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:05:42Z), 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/ITBZ81800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb5cf356e26807ae029c560354a3e3ee81eab45276e9e0f951689cefe2b11b. 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/ITBZ81800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2205e7a35b3489fdb07b33243798428fafb7b7b96040085f1857d4744a553014. 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/ITBZ81800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ab6961ecb5a50b154972688c0ab74f8ee71c871b44c34a7d218e850c071e7. 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/ITBZ81800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df24bdfcff00932990f3d38efd0a86cd6c1842a55507f09ad778b9b08137e1. 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/ITBZ81800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bcbb70095f90d7f973de227cf9ac1758d2b072fd12f848b13ed1682a3a2230. 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/ITBZ81800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a425d130ff2117619d6bb7f98cf9bf229e3926432e7b08dc77b53f4730ff6c9. 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/ITBZ81800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6bda88d7f060ebb777221e3712c7380e9e0d5b90dce5308f3b20598345fcbd. 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/ITBZ81800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a34929ac7e12e745deea60188724d42b4343a097f8ba9d499e0e19a4592b39. 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/ITBZ81800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58adfa9440bdf97c9cf445ded75480b4d9ffae95f769bfd88c68605cb9dcd65c. 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/ITBZ81800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b641f6eb3e8861ace0e3e0ec062cdf199ee0b8fd2b4167c3dbb09099a3bdf. 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/ITBZ81800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a716d6a98f0e43c6e49d11b70d042279aaa1f7484373417c3587af5d0d9a72. 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/ITBZ81800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa5cfacd4f0636b8d9740165ca8a1515aaf6a868941c329acaab334010766fb. 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/ITBZ81800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e74c99759547dd26a633f8c1b348ef9581c617b380331a1f2d44e5fa2725fd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ITBZ81800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba106caff75988cb837a39fe6303e964b80a1443df1ac771ff897546ab8648a. 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/ITBZ81800023.
The Early Ragtime: Tom Turpin, Scott Joplin, James Scott & Bix Beiderbecke
Scott Joplin – The King of Ragtime: Complete Piano Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ba669030546c717163bc8e3bbfc8e3cbccab67ff3429875852457ec690636. 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/GBBBA1800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e8e47b1386f0c9b04a43b4a9bba864c7ab93d278ac4cf15721f1c9d4d7ee65. 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/GBBBA1800513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204bf53626bfc7bd081493335675aa69ca0a87ce80ece3a9865abc8b8d041d35. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBBBA1800515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bc46914d90a6d082ecc556ca611e54913fc70c11768af8fb202fac12d91d9b. 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/GBBBA1800516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cdfaca6240b537ec650c2e20482b9a07f949c404c601cd1c8f322615427501. 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/GBBBA1800517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a406094d7c1ce0dc813bc4a2b6ec1996be2f88374bf52bf14b28f7046707ad. 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/GBBBA1800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec84a7607f3dd40f56c1670fee86d5ad328dc77631b1a9a4c8da2c0626106a8. 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/GBBBA1800522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b8d7b036d161aae32cf3e52196f263725dc0a353da88795bbd04d9ee2cb9c8. 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/GBBBA1800524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2674f517aeaa082fc59536e7f6080651bf106fd08e00cac3a0f5b2bf48ff0e13. 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/GBBBA1800527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5119a5aa3809b527c8dcb1dae244337c1375dfb7eee59fb5880b7f171652f9. 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/GBBBA1800529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65937c4c0ef666bb58e46ec850deae3f3b40cff20bf1e7b75710477ac8ee59a4. 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/GBBBA1800530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f86510bf7ef8af8bedbbed8c0ecd45c80adf5ce0bf7b9a084db4d6b37d2c21c. 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/GBBBA1800531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cef28cf725000510204facf9f90692417b7d22364d9dd4f8971e0e0347bc86. 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/GBBBA1800532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cdb27370bfd3f81f21b47a9ab201751d33f18c89e5d5bda03810c53a277c53. 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/GBBBA1800535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a357253163c8f1258e91002f58db5548b5f8945ec93f43e6fef02fecd3962e. 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/GBBBA1800536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90f9b502979b76b05de0ce412260a72ba38854fe404bc7e8efa209e17c13bfb. 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/GBBBA1800537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a43c23ea2ccb553d8b285bbc5ef3fc977a91f90056bdb0787868ef637cf4d68. 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/GBBBA1800546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd957379b41cf1e5e7b0dec1243160db1f6da85b021b0e7b757385ccad24ce7. 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/GBBBA1800548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c3da011f1ed7e1cdd3747d05f8644f65f3938613a84734beb51fc24f95bd67. 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/GBBBA1800550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81c7de5de2f0168b42dfb49923c651d46265eb17b876f06ad150d89ec2c166c. 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/GBBBA1800551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e36698aeca59cce5a677f207dac10dc574749bebd5bf59092f3d8343c5a8300. 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/GBBBA1800553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a645a1d4fd09e842af860b8bf8c225f74a689f654834560e242f08da7f404. 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/GBBBA1800555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5995fd23ac9b25c84efbbb58653352b5363076502d1ef8095d491214eb57bc. 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/GBBBA1800558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de37755ad8c994def30073ee86c180644a459fd9d86433954aed93a43e2a773. 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/GBBBA1800559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962db09c8d954e3a071694c7e8a8cd538f31c1041cc02b931f142d2c9b6fe8a6. 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/GBBBA1800560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f9f43b42f5d6bca03d9f13b43ee13dd22da26ebe7228d17f2cc7e049082cb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBBBA1800554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048ce39050438df4f78c9751ffdfac1292e4d2346b901a80ddd95871d2324e01. 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/GBBBA1800557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c0889f5d6aaed26227e21a09d920cdde3921afdf96abf24f705a5f2e3e0dd7. 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/GBBGK7632901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155bfc2c0dced2863eaffc97696481de6c6c01a0f320c7fa4d83e9ebee96b673. 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/GBBGK7632903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926c7b7ff04ef29b6717dcafa98a72bbbbc1d786df3cbf48115b920ebf2b3268. 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/GBBGK7632904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5505dff5bb70c4108bcde828b3d476de5c4cac24c542628f2bc212adec47e57b. 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/GBBGK7632905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0656a6efe57cfd71ac1eb2012a8c42edfeac875ef70fdd19d1f90196dfa3609d. 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/GBBGK7632906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c7a4cf699cfc2e8ffe065d953184e04d82472ce82f01a6a58254e8fda87031. 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/GBBGK7632907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1334bba53870c28526e1e9df552c5c3b624a307033dc80e715b43d4aa73946ed. 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/GBBGK7632908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d87a5751871b24d1218622ad776b02a7bd45cfdbe19cffb42a5e18b74f7ba. 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/GBBGK7632912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d58f6c86990dc5a8a9d5687ced2a2cf9dafcb48ecd2ca63ce4088e09e02c3ae. 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/GBBDZ2132136.
Scott Joplin: The Complete Rags, Marches, Waltzes & Songs (1895-1914)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19eec7ceaf1258fbe63b4404147b2492a5915373e162bc136a2374f8091b810. 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/NLB550200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4df679023a9243f04180119c9553ede2965b650297f047eb13e734b34bb4057. 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/GBAJX8736516.
Moments musicaux, D. 780: No. 3, Allegro moderato in F Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252cd3b3f177b919e7918aef5f6399179de2c10af553a0646407229647c766ca. 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/GBAJX8736517.
Joplin, S.: Scott Joplin On Guitar, Vol. 2
Playing Tribute: A Nod to the Paris & The Hollywood Saxophone Quartets
2012 Midwest Clinic: VanderCook College of Music Symphonic Band
President's Own United States Marine Band: Courtly Dances