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 0xa3a67cbbd4359b20b2ae3c024784c10ad587d38678bb1aebd9d89ee8ab768d8b. 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/6150059e-6932-45b2-9bf3-f3dc73f422b7.json and https://artists.proofprofile.net/proofs/artist/6150059e-6932-45b2-9bf3-f3dc73f422b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x66b1e3f9ca91b24022e9e1e1755cb3454dfab2bf93179a62f65213a729578716. 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/DEBT91900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5e8255ed66ea64ecb8396667952b9399854966c06c4cf8f19ad7991609eba. 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/DEBT91900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ac1edbee9c66cd2a0d5713950bb992b11f197892a101f7b0a121ade68fa917. 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/DEBT91900111.
March of the Living (Mira & Christopher Schwarzwälder Remix)
March of the Living - Mira & Christopher Schwarzwälder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2947937dd1622f803756532458ce52427c06552cfe36b7f6b36ed117a880f8. 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/DEXO22398497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb479e52770efde8f6469d23fb811616a5656bc70a5b0503f3e8d8c8568fa221. 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/DECY52301345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f6bfde2e4ffddfc579da828bbb0fe95a58b1735275805019950e64f4fdf24. 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/DECY52301348.
Wolkenblau (Christopher Schwarzwälder Remix)
Where To (Christopher Schwarzwälder Remix)
Where To - Christopher Schwarzwalder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f2e45f089d553c16c1e5165b238826b9887f8622ab4716f7fec220d115fc1c. 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/DEG932300363.
Siriema (Mira & Christopher Schwarzwälder Remix)
Siriema - Mira & Christopher Schwarzwälder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25027be668854e1abc372781386e0a17fe7429c3de5098dd0c4b79733d3120b. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42229087.
Herr Lüdeke (Mira & Christopher Schwarzwälder Remix)
Herr Lüdeke - Mira & Christopher Schwarzwälder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7616b1097d154ca5cd22f4e6da97b6a78cf9f66679c77ee583ec65856094bec. 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/DECY52200326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4003514bd4323c172f2db0ba8f3388bd54639021e8b7c24858e91536f64b1859. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECY52003267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f93bdb82881f515876148b0c86db0983f48ae067ce35982a131aad766537f. 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/DECY52100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d604920bf81083e37a15545452d52b409c5aa05f0ac9ef70f305fa97eb203a2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECY52100498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac3c3b11e274dfe88c1eb298db8065d7fb84f29dfc7a2c44b4c2338ecbd7b9. 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/DEY472081068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2f10ea30e9f1e5b6fce05da2a8bce3ebc049b64624e2d4dbda01603e46849. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:13Z), 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/DESH41800391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cca8e72576f6cdcc7a7f8dea89273c31b39030d17c1806d8ef24dfe2ac60ef2. 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/DESH41800393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e701c23322b02bea27081219b5a1d751ff65a9b0d6e22a0dfd3bc82ba8f4f5. 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/FR10S1878659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283af797e2e92f0e6143ca9a8590b01b1587f303d2431729055e2aea12a907e1. 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/FR10S1878660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf32618e2f26a35c4c8bce19126b7bbf274b4e2d5b7a7ced3962b84db16bd87a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1878661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3647d9193eb949c587b3bb3d7381eb1ba61f0696feb7d24c168d56357a4aef22. 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/FR10S1878662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8082e8547dd1bb196d897b0c142298f3ea85cb9ab0f20b89506de845a74d327f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S1878663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bef0d1b0722419ce05645ee5e0107af8471bc0c982fe65cfe7c03ef6fd229dd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DESH41700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2a88bea478aaf3b6ef688bdb25a5dfed2b2298c4c7508ddc7468e9d0be6ca. 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/DESH41500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d2d9bc30f713ae6b66708eaa383f4a85fdd51af38f10bb09ec89167bb21e4a. 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/DEY470940874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73be41d6d69a102fbc7da7a2b56f91b25d9fd69177442411e0efc6a42c669efd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY470940876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1475b42d55023a3243e010f9fde8f2f6fee78fcea61b714cf396f2846cc0394d. 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/DEY470940878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff985a02c80f46d0282c23ed4581162d15967abc58964130376c85bc1e6fa366. 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/DEY470931326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee134c30fe3d86cc94ccb2f6705d49e88648dfbcd28b54e4cfcc39e931fb2e2. 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/DEY470931327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a158f9ee4a89f4b81ffbbaa822960d9a1e6aa7a6da26b0075324eaf829280d. 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/DEY470931328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c351578bdf01155237f8f6e34d5c9205271dd5bb8633e88ed970e8b3bc5d23c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY470931329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c2524b8534d233f426c85e1be249509fd326ecd530b89c1643596a48da602e. 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/DEY470931330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1660a103abbfcf9fd5d9ab380a64ca3ab49251d25e87ea14c799b93328a67ba3. 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/DESH41300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26f69a19a1246537ccb8d6c4b916ace0acfcd0731fdbf1d6af6f8012ba133b9. 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/DESH41300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b00999cdfca4bfd936e23d7a2549321921d000b8b0c2a228b5dada918171cca. 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/DEY470941854.
Dr. Nagel - Christopher Schwarzwälder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3792c504461378ca422ced4a4e892f569e597b75fda60fd1ce05ae7de6e15278. 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/DESH41300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ba047e53a758d0bf1e14671f22aef3a83c2d786c7701ced5e03081e16f7b58. 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/DEH741211342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67937438a601a28f99e478d85e8beb1fdf2e6c2803214a676ac2232596dbcd09. 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/DEH741211343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baca27421f6ab06cb8164a7f7a69635405b1aa7c935468c6a8de8e9338181b8. 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/DEH741211344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4a8396e34d31916914d19407b86de7af94944a079f59da9be392f84f77a727. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEH741211345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a00d680beafd834ea5be98132d0a26c966d594f9d78a15166110a65bec971. 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/FR10S1670483.