thumb|Joachim Beuckelaer, Brothel, 1562 thumb|right|The Pascha brothel in Cologne, Germany, is the largest brothel in Europe. During the 2006 FIFA World Cup, the poster had the Saudi Arabian flag and
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 0x066c951f1ee603c422c5215dabfa7232f4d5bf096546c50636d0e1b6a7e59bdd. 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/26e23bbc-3b2b-470a-a32a-d6bd6db74440.json and https://artists.proofprofile.net/proofs/artist/26e23bbc-3b2b-470a-a32a-d6bd6db74440.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50ba850735c82d0ab653af73eddcd61bb7fa53d896e5735e625abb4bd31106b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:53Z), 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/QMDA61587031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb4b648fb7f4b794b05e65e4d8ab616ea21e0e64d44e6ff7184ed4666f6f35a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMPKX1785961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176ba2ee4bc643ba3b7cd68f37c53dbee234ff23602d56ab44701ad77434d5d2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZ9JZ1737976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef1f2483439a56bba360f0aa260725bbd8ab890c8f6343449878b2ff704748b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ9JZ1745411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c33b0bd35c29c77ffe59fb13c5677c1df7c2bb0b4ca99668d03deaa586b5d5d. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZ9JZ1791694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5cf33186eca07043f5f87006c6233b23e4104cdb01185f61aa19f568d58e6b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZ9Y21769170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843641a44da4a8ad67e7be5aee9bd96632edbf82c7bf33f5917f1e66c482bfec. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZBRF1812262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5342c96c39a8c0909b72bf1e24dffff092f6f13e74a639874c88771b76c4f5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZARB1864420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f847303c06dfac5e677573c80677d43094bc5e3dd78127398e7e0606cc6da7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZB4J1884903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d8865d58c90a4750e5a512a7b23340c89c9b80536ef1f75cd7902b45edc753. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA41889595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb870012fae6057035fa30b7b887f3c69470e4d30896c2ca93b70d8b068cf9738. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QMPKX1877458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d882add9283ef2f4c9f263131fdbc21d83185651e656caf48c871c1d968e4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES81815273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d43e66914e717b6e36076934160a0471983af7b4e0158c4b7f0d830d3fedddb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZ4JJ1906369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca83a56d8c047f10fa9208ebfb6e8cdb0a89b6edb269f2a4879ac42e7be1847. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA71909525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b47599d1593252d77613ae095dbf71f5ec4620e1103b49648f1d6b4ffb7ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA71909526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d0ebdf5620e325a667a865c77fd7aa1afc3ae13a5144fd9e464d29512afa86. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA71909531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7073b2b853cbe7cdd48796749b0dc25dc4cb7eb359818bef0083b4490a66ecd. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA71909532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d83bc4861887cfc5feaeb4372ba1c75e9c2fb9bb0ccdfa6a2bdbe2488552dc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES61993907.
Warning Shots (Inspired by 'The Outlaw Ocean' a book by Ian Urbina
Warning Shots (Inspired by 'The Outlaw Ocean' a Book by Ian Urbina)
Warning Shots (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce229019a9d29747daa24c56bc8565b983c4c44496e492c336689bf4bb4f9282. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ93L2002750.
Warning Shots (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238aae77bdea3eec40f2745e4a28a902dc86fc53731ea0543c25c7f711495e04. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6J2071698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b112fac04cadbaf6b5a7ac4a71f9fb02a8c497cac0bab1b227ca1acd6d5c5. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZNWZ2035904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd081fa02aca79cb16304fd38e0e5348a1689d023b409f777439c4b4606c17921. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:06:34Z), 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/QZDA82189015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe19a71113ed841de769d1fbb3331fbaac16f678448fffb7adca77890d591340. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN82190553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ee72de858e9f5b2ed35cd20fb53ca90ea32d28aec6fa6acea3588e0bcd1da. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6F2187712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7590e12d0db727e171c9bc2ac3be99916682330bad1c3d9f1e798938dd4b5e2a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWS2132547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cce05e2f5e75ccaad9542da97a7b7685d42b2dfcf86a1320ceed18f2ada023. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:25Z), 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/QZES52205714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7785ed2558b170fd278c9e10f56c2717de8fcdd69b6484f15f899b2947ddcedc. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZK6N2208425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf32361c6d7f2fa091169735589a686be6f2a33397280633fdbe91259db6aaf. 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/QZK6K2217765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dddcffd8c42880466aa74e910f6822cbc54a5b809a8964688812ed953d26d19. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:03:26Z), 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/QZMEN2275252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ab13ac48709db26f7226afcd1cdebd46a67814152712a3481fff83c54538b6. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHNB2254674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c346581e3eb66b23dcec80815c5fc1c2fb2b193bbece550be2e7344fb1eb2f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:18:39Z), 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/QM24S2206396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cd0da5bf24f2b958e8e2038b01de5aed10ae67fc333bb504497270938632cc. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZMER2334630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4d681698b942d2b94be8addeae650551d71cde674811b6fc79a7d9f47619fe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYY2457781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cc2c30735cc4793828afe504fd52479fe9b6d840c19aa13e73c636530c3601. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM24S2400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4179440495f750cdf6f005d39b8f063a282b4b7422c396cb1d5c5ff0d948c2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM24S2401432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d364bd5796ea02488423f2dc64ae683d5317a404fe06236bed62ac3a5df2e5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZK6M2477242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbc7cf51ba71a1b6b8ab7d10b14941484d89d45c17e0fa9c02d7fca86da5bae. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2453098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa353ad0854489c01a4fee03b23ecd8a3eaadb205a509d341e04d381afc8b9cc4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTB22497110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d48193871005208f1b1cb42f89b4a53907f90430149480442174a6228433749. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:24:00Z), 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/QZWFF2451338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60fad23ed4260c6fe01c209e2491819c1b19d55b0857157954be416a4599b85. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S2500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353965f6f24b46998c5c7c2bd26d733a08a1edc8dc6333a145f03bd4d530fbef. 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/US3DF2089531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08282e46d850533e1a5878267f7f9edb6775571774362199f84a761d74a69ba. 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/USC4R2105590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff3ba5971d63592696a0c62c288f55e380e4a769eb5e5b926dbb0bba9fd4c8. 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/QZDA42350798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a879b8cd5041d5215b57edb568e33d3b971e124a0471a1a96be991c6ad27f10. 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/USA2P2033422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c510e918dc8de5171ace3f6b3e54c878f351a82626eb1461683c24908e71af. 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/USC4R2003950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cebf739eb89a44fef6ceacdaba2dea1645a2599125d57de954c01394298ac3. 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/PLX632000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c816213e0edc41edd9251c0f1374ca3815bb5c1596ed44747d825ab274afacd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/PLX632100011.
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 0x957f8d295faf9855c512d7067f5328541e995e3ae2528fb7c63c7bac6fa57e02. 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/GBP4E1700399.