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 0xcd3ceabc9cfd2832c4cbac0074b8b72ef1bb491a7e4deb5d8c0b5ca049b4c17f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5960c8e-ccd0-4712-99b6-117c65db4e56.json and https://artists.proofprofile.net/proofs/artist/a5960c8e-ccd0-4712-99b6-117c65db4e56.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 0x063c55078b37f76ec53571a49c0643048793cfbdc599c1ff3225d1fd14f0d064. 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/QM8DG2015421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0510dfc4017219e81dbc908d9b40fb336bd8675642c4ebe75954b3d484ae26d3. 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/QZES92050978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce79d35c33e4fcb995926a167b39bed0e97b630746a0b0a4f006b4af1f0e53. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN42053004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8cdb47e3372a40616eba688f25ad238faafbfbf69f13bcbb68bab7f0b02965. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN62019486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc502a2449923500049db0f07948daad7ae40864442554acbb4dd71427d76b9. 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/QZHN72045625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fd21b4da648d1adffd2f059d13f0c85f94497133d4169defff108d1fb7dc55. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:07Z), 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/QZHN72075556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa780c5d9989fcd7320bef7634223a70d313bde7c2a72b592d33e2783ce34a081. 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/QZK6Q2037217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28a6ee1c7a16ddeb96df58c0fa8ee38fb04a37f19638f0e6a6dc9a23bc842a2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6L2059595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc1aacd8eb7eec76a803b36fbf347c8d8dcbe245eb676557d9290d55f6d7e1. 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/QZMEM2094804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc010432bb994b54754c94c5f4921fbf9cff9e9d9ce501f63e66e82a3f5537a97. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:05:21Z), 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/QZNWQ2009868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b929b47be07222e24f31e4c8db40d3e4a55627e32c1d4016d9eed3d744c82. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNWR2098339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a862b66189ca3944401fc44c8e1d5da4de120f81a9c56c338534b653974eee3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWU2096030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3528f88274c91341912a91d1f48552216935e5a1c0d69366b637b51abb09057. 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/QZNWV2082957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56839dc55a40d23236466411b3497bc5295ae1f3ed88f528cc6848cbc001c781. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:57:47Z), 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/QZNWX2064922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c4127178021fd712aca9f31a3ff7e8fcab6cf2b8cb741c1f77ee56a1e481e7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:30:16Z), 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/QZNWX2064924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3910ac44bcaab0783b85afe2dafdb785d03017623b4a651bbb58d523d0648e0e. 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/QZDA72159252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08db626e0a1c4bade58a210909a6458b98b5f4b3d8578a5a8c0428018a5db25f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZES62163234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6501675262442fa95a455f6fa23607cbff0ed33cc4896b9d0a361f9430588be. 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/QZES92155888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7eb3c494331a077688ff2ed2d8e0f0cfd43c437c595b64a562c2df302cfa7a. 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/QZK6G2166676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb6cc9bc092db099f07b7d389e2822d2a3c768d5e87cc991824cd8747d351bf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZMEQ2189448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70f95de11d332c470a8e5f10a7555b327b40619f2f3e6426470a22ade702638. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWS2179351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4987ccd60de656b9c1dddfcfad3fea2b681488346de8da6cc16ad2503b8d52. 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/QZNWT2181931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e958d65e0041ba6748e743cdaccddaf013dd83ba5f4bae3c98c457796c2071. 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/QZNWY2138971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e3cc79584794e167473cba58481d87e65e8e9c5cfde7b4639b498317bd178. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZTAT2103577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9ca6bcfa2c46dff27d962176bb67945af157cffe3dba10e7737e674b6ccdae. 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/QZNWR2303081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ab86ee244dbf15ba90ed2d009a67e6649c7526ebf010295c6b846f78a5246b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZHNB2238827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0df86d75880dadb2ce43e6f0b0d38c6105155cdb5b86381b1a35a190238fb7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYY2340573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7c30cb0ff0be4d990df458ee3491fe824de373d05972309c2cb28bc97cbbdd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES92395255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866643eac72336bfa97db344789ec8fec4054759504ccc351260c1766e631df7. 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/QZNWR2303080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2123e6492cc05033c5e8c163c740f6262a89bd9d6f4d77efb43a7f9a2d5880. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWZ2405295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1f12413d7cae448182f4bc47f086e2395276884b68039522019b478613d714. 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/QZTAU2410597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c27d79cb2e6c48120528e61f5be430e6bfbd4b007704da2a66f8c93e2b8779. 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/QZTB82463110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094fb3d860f6cf4f1ce833f845178841cd65b1932323534fc9bd3dc0ea855608. 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/QZZ772499401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c86a95833f9eabcac4723fa847003a4b08ab32e557ba301ea4882a42b45b3. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZZ7V2444218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd990506bc186822ec4f0e6a4ce9d74013c1227f0d8409b8373101d608ed31678. 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/QT6EU2564209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e86593eb606125db5d6303541676d65c67dde908b93f65a4fe756b2335a66d. 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/QZHNC2360635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd18af2a999093255d20f83318f768dc0d6063ecd8539597707765fffa81b6a. 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/US3DF2486132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66262b1a6e4a7d53ed2cd59f27d918bcc69cd0fc1cde438bd7a304c51efa70ab. 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/QZZ7P2449970.