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 0xd920c3bfe0781e45f03f32d9668c7e6acb8921fa851d1bd0356ceeb0061066d5. 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/9e09a3d3-604d-42c2-a6d8-93624592f5d1.json and https://artists.proofprofile.net/proofs/artist/9e09a3d3-604d-42c2-a6d8-93624592f5d1.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 0xa465891472f494e139799a5f2b8063a7e87a89d6e73061b7f80d08e3e4e29875. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABX1477437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560fa19fa7e6e32fcb3eb4d04654f615d9e0c25edb968c40a62eda2368bb584f. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCABX1477438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9015e17cfb56aa7529f4bd92620f1aac8d16671697d559e922185c2787fa8b7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCABX1477440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63e5976c45de5e3b7c6796c13617b1ac2c3320649f2130e155fa389c0d68cc0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:18Z), 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/TCABX1477441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc806b359cbaf20e40b6a5afa9f7bc9e4cc8cc31030d5f4f3e018bf8ea7d9a144. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f952517a78fc880421a6c7e41ea29d61153a40c50ad5691e1c5bf6127478c2d. 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/TCABX1400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4e81a0bafe0b91c4b0dd9e3b74fcaa495e0e188a44cc87de0a13aebb2d2be6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABX1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9f3dd4e28484ec59dba81d728a8b4e8bfcec23b5e2dbaad86ba6cfeeaadcb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCABX1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde73fa735e1a70c73807f156ee1dd9cd591e7b897013d69498820f87ca7208. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCABX1400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d1309a86c439b91a7b05ea25d4c6ba4879cc68c9bb51616ac90544fb380bc4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:41Z), 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/TCACX1761353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5330487430ccb21dd53d2e1be51b04aa39e7f30c145040f1461e3fb1fafffb3f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCACX1761356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6c20d38a597f24f1693ac1dd300bfc0034b303e3e910b857f7e0256a5b5b2. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:43Z), 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/TCACX1761357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3b4e8ae57f5d470e86d9dbc1025ec5148928bb20e3479a1fb4e9e307081cea. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCACX1761359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23085847965daca6f5195cb8b825ce71268396d41067ad5d00cc7c49b441c29. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCACX1761362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaf8cafa2d6cdcb4c25af8f08bb3f66978c68db4d639dad564bc875ab16d94c. 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/TCACX1761363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eea5fee2155a6befa1fef9bfe4a0a336bf7ec23c26b12441454dee4e431a48. 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/TCACX1761364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64611ddc14b9e3b0694ed0e08e6850f1f63c311f2dc105e29dea6621e18e5ec9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCACX1761365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92597116b2159f1abf57d77368cf37798946b68e761e634fca893d7759e5f66. 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/TCADH1727762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1825f323312e18b7b14454b3f05c552ec093cad2ae405fce21c6cb1030a0f4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCADT1818496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20c27e5ce2ef2a1273a1788a9f6772e1cac4ae0f75957be1cfe8e2ec9948a0. 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/TCADT1818498.
Wedding Party (Love Makes You Disappear)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7481f365c6134ef4b641c92bbd048ff220c65d150c0bfe5a33815face44a4f7e. 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/TCADT1818516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273d283669ab4a439ef03709a7c8db2d9da10e1f77f9531e96cb4b7cb6d374a7. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/TCADT1818518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ef8da5056911376267ced6cac1259886d3ac21f84979b31cc371ebc12d513. 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/TCADT1818520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d02b17713032b93cf8f730de20775da2e5824f26e5a9f69c05701503613a0b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEP2092008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5228c16e6d1701fdec522faeb44412a0ad9c1f3e9cecbef6e298150694118536. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:37:31Z), 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/TCAEP2092009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73214176b82e91a78e95b4c430bd93d74ca19bf2ac953b4d4f7a46c4e278c7eb. 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/TCAFI2157151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7160b8330cdd75c24b8d91fa185c254231ea72c1cbaaf5933209d53135f3ce74. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:54Z), 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/TCAFN2163970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b942de054946bd010ca1b2e9069581be3bb7c67892ed7db5ffd8c5801c72ed. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CAN112300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742a922276b2aa5d5cac3b555c127610e576f16010b2e99d972dc26aec5c8b44. 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/CAN112300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb36a8406d38c4a318c6b831c8ef97fa99f7d08feeee01a6e8c5e9bdd4129c6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAN112300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e1fc662f5234487804ee9d2ca826395057c0fb07b7ffb587c2406e0898fe23. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:13Z), 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/CAN112301929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88352869be93de1edf4e68a1eb0ed6a7b5cdf6dd4a7bfb5d59949613d302da50. 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/CAN112301659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244fe439c8f1d2234925a7a4f62c2cfc3c202f34bb55a4549a176a7b9b3688eb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAN112301346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88352869be93de1edf4e68a1eb0ed6a7b5cdf6dd4a7bfb5d59949613d302da50. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAN112301659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8f96033e793bdadef523a32f58375fb55a2fb8ce59e20fd95a341066fe4340. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/CAN112401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd622a8a5fe88ff7e9a301b2a7c9ff18fd37d7c2dea674a3b9c9f830c41988. 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/CAN112401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3bdc20e0373d241c3fcf1108d9725096278baf9b27b3b87b0210426cdd76ca. 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/CAN112401474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3083a3d3d4135ca512757b15e94d7e18e831584384f319427cdb42fc69aea1. 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/CAN112402534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e181fbdfde0175051e864f27225d55c21bac42d650949cd76a36994a5cd4f53. 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/CAN112500068.