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 0x5a3d56fb73561a276b20587aed05fb222590a79e08e2498ced9f7512cf4df432. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e4c2ea-cb3d-443f-8ad6-5e08dba06bf1.json and https://artists.proofprofile.net/proofs/artist/34e4c2ea-cb3d-443f-8ad6-5e08dba06bf1.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 0x21436091fe9e34937ca1a39f6b96f10c22af1091ac47b0da13c3cb02c62294a1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916ab7d6802a0f19f36c07de9967b508d31e04c06601f756637cc4decaeba0eb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20007ac8a426e92921ebab3de87c8c25524a8f881a0576255665f88b43930026. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QMFMF2526456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d585e08c06b0e491d7731995bf96b52052f7c545c5d1766f8a764a8a78fe99. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF2526457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acdbc3d5ff71792f8d0b08726cc53a6e24430bcb1aa3cbd2d9cbb097ac074db. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFMF2526458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1e8146f00194d3ed24c04d384ea48eb0f7e3bd8b0390a3e2940aacbf2364f9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:05:15Z), 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/QMFMF2526459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57084718dceafeda666b488a89c00f173f39f3d57a12e2b3f757a8a10b40f52c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF2526460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4aa63990414fc2e877279796faef29c7732409ace7d401a0aff4d6ef6252f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5306a1e7d3cc608634640f329894a3bda14bf7c761c5dd178c09102dbf1e48. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMFMF2526462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4339a6de5eb97a186f2af360b2978c9f53c32e32c3c49fbe70874c89e9455d1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2310811b6657db0b7a6daf26fbcfd874f25766760f5aa1aec8c5a5272aa3d4b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49969dce811bfa1e510e6e9336871a8778f8b8a0ed61e48d440d52ee36fccf60. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f707c45eb3d8b1ac056ee8d5cc48080183017eba69481d2cd4910918d2bfd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebf42b3db2a3ab0de98eac80dde4553194056576c91ee8fe79c3bdf2cc17520. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF2526467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec45b120e3d44e909e0718c3eee7d93658e22ac78fec2ad6de0b4fcc9e107061. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF2526468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1568ed28ca6d4c2f18e0e6186fd096ef5e7c449c2700bc02a061b35e60b733. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa492b38322df99225648703968ac44819e7c25a61cb7a4a6a7aafab7796239a5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFMF2526470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06b4891954fd4763fa8d5d3155470409590d0ab4c5dce355090a7019a67e29. 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/QMFMF2526471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae4cdba3b07fb84e21ac7d7b845c852a56346c089e08a68aff85dd1d8556085. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:53:33Z), 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/QMFMF2526472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c170253a429dfe83cb71afe1165af74c94f934ebd3eba3771329ff02e9aedf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF2526473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9490fcd04195009ad4811e4d081d219cb829f18495c851213c32aaa74b79282c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAZ2502379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcf7bc83de29f06f70418b9b8ed59c3636f579c489843280e6fcd69a4bbd01c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:02Z), 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/QZTAZ2502403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd58c5680ac305a29ce056301005b2fa6cdadd4c405c22c29e7922e4bdb9b81. 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/QZTAZ2502343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44f0d3e85f31555f80eda658c2392b52b6ce4ffaf9c1a6e265379eccc93ea3b. 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/QZTAZ2502409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6be6777cd34c31a088a9cc50d9728d4c32185934461232efc20b1f6efedcb3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:49Z), 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/QZTAZ2502414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73df86fa752196aaa0d32a1947e11be72554d4ca28e54e98300aeed0784d832d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTAZ2502411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab5caabf959c96a4e46a08543710ab40ad31a1f54032152457a628481fce282. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTAZ2502404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b60e46fbceb792c222a0b2c2406d82cff39c56862bd622b7d1a94083b06337. 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/QZTAZ2502412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c8de4036689adfcedc23a52767761fb06eefe83ccefe00443c296db06647b3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:40Z), 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/QZTAZ2502405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e8ff89dc6507992e48dbe66b9faf2ff211d368f3c273757ccec7253ec1d7b6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:35Z), 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/QMBZ92557375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9287b2cf7ee377eb56cddd5ac5d8eb1315c80326936e6a384452ca5d83152e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMBZ92557421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd7ebea8abab3af29232f4486671a5fefb47ba2a0580da7b00927c1ce40478. 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/QMBZ92557418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d85233230e53d501bf7548fb0a4bc54d69ea96a0f2a95a20966ae5e0310ac. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QMBZ92563435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55abd65698392c6b96df1638ef28c4a6b2b2196143a7385dc73fbaeb18a6cd4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMBZ92563453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f4a61a2dbfb8d6c2cda3f6896ad2b9ad82acd630bf239861225e29c37c1339. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92563448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7690e72422f61fc033c34011b2c45a42e91eb3db6dad2c8af940ff01f9eb19af. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMBZ92567028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bdc1806468a0dbd43e4976c368be7a4e8a9ea75f5a813aee357fe5dc5a7c89. 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/QMBZ92567005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1971b75d3547fd3740478eae98db526b9ea4d4afe409100f41a3c304a99765d2. 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/QMBZ92567034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce409b32c18d2156c78d52c010d22b32206cfd221acd448cce275cc2617d937c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:49Z), 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/QZTBE2556894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f1717f28c6f15b16c00b44590c90690f1ce54a2e1f0c3f60b4dd584af6fabb. 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/QZTBE2558940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa76194a00a004140202ff566baf800fe7cfca4ee4fe1cc2748bf3834daf843. 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/QMFME2598340.