1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa4840d12d51862541f81ea912838ab64ebe015f8777b5b4c375d12abe3c37217. 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/ff9902a5-caa3-434e-bd86-cf4a70f0b035.json and https://artists.proofprofile.net/proofs/artist/ff9902a5-caa3-434e-bd86-cf4a70f0b035.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 → block OTSBitcoinBlock must exist at that height 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 0xfa0672b302e09df5fa248c33547cae188248e5bca26ce0ba18be2c7191cbc9c6. 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/TCAJI2568854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2150222114a1072d31466d90567045476faee3500c1590531ca380a01565a9. 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/TCAJI2569115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71594d517b21b6dbb297467c875ad1bed299abb444948788804fe7e9d6ff24. 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/TCAJI2569106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c52110e0596221af101090762335c16bce636459231e28a650921c6fe9f464e. 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/TCAJI2569079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d90c0c3cc7e4ad6c1cb112ee7f83567b68d4759a986af3d59e4d1c00b36b874. 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/TCAJI2568839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c36a728e1a59d32ac5ff47225d588c46de4de3aff4323560185822d4c4b21. 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/TCAJI2575307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3250704f7bdc24d0fbc304539eac5af796365f93f1a5e4ab135016c9e602edb1. 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/TCAJI2575327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a0066bbbb4adf2de23227537c2cabe7ce9df6e7d40635fa6793fc4ca11acca. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAJI2575291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30909daecc94319f36b71ffbb4c0241b873b4bf7e8f73b03dd67874ce2a2279. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJI2578616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080bbecc97725f668cf5e615489992d0787f2aaa4d4f531cb2c7cbf73f0aae80. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJI2578449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc14995242a844737c498773f7e4519e9878de6ddbb6a34d68a464072486917. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJI2578576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd999d977c0fb86f15359646924f3a4554a26c107af1a2e6ec721b82df2a01797. 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/TCAJI2578662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a370832e8c9a990f4ac4276c3d5f8c870578cfb657fad421dd80c2a350ea20. 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/TCAJI2578593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c0fa3e3ca44dbe736381e2ec4697638765889bdfb1871951329af65459744d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:36Z), 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/TCAJI2578683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1252dcd22602c4cf1f433b7d48150c1487be45ce51fd84bb5de21434445e72. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:02:26Z), 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/TCAJI2578424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9556d0eeb0fda0fb6a6bc300196441b8ec86789ff86364ad36d6587a3195970. 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/TCAJI2578538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb5ccf7139598078f097b6abb6f1a0d778283c4037e3ddca1859e9bcd711ba4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:59Z), 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/TCAJI2578552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f121bae3011d817edb720af8f7d276689b6b13ebbf12699f67cd99cecb3326. 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/TCAJI2578437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9113593668539e2ee8132f454ffa538932d28215a3f372fe04523fc10f578eba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJJ2520823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9694a9902b3ca5f8ddab07b7231c1524994c5fb768dbfafbbfcf64d64abd71d. 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/TCAJJ2512751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045d068b4096e20ae06cebb80d3a5b0978c903cda735ad4d29e21a28e9f3551. 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/TCAJJ2512828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c63a07a9f8cbd1a3f495d7fa9b0242aebda88fc5a685fe3ea0f7fe66e827efa. 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/TCAJJ2520804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7360a63f433044396e8df6716249e822b7118fa977c2a4a04a018253c3a6122. 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/TCAJK2520847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c512e0ab0fbe91866c56f8afc0617f1aab009a4edfba4e92518bd9511acbee. 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/TCAJJ2520453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de2ff8a4ae33fa145ab33d25a725422341658d0fe5e5a366cd2cfbe57affc74. 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/TCAJJ2520681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398b9efc74ce33a78e0f5c566c28158e3da6f94f8129105c4c70c90182578ab4. 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/TCAJJ2520726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9769ee5b817d47d643c555ad0ecb33ea711b064b8fa98c75f775c244242020. 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/TCAJJ2520420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f8f95ea2cd6dbeca3534c3727b8cc53a056bf99eb32f41ca9aa0cf27500035. 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/TCAJJ2512796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab5a0f979998dd3f93d6a3566832641da9574f0ed2047a2b3605cfd74182d3c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJJ2520759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8973a94b2aee2d0334e375e184d207b88fb2b9c516a9a82ed4ba42135252c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJJ2520387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e3fa7607bd0570c0ee097af77bb6f27cadfd2e1f3e1da09278b221ab8fbece. 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/TCAJJ2512805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bcec25340a0ddc010fe0e54bbfc8e3026e9b0935de5ef3530d2686a4373a92. 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/TCAJJ2520366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ac37982e739141a70a3d2359d6418d67de234bc1dbf513fed522dec6253aa4. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAJJ2520594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c330bc397a21836f18da0e30a3432aa7e242479ae11a78e7cefadc2ef42b1b. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJK2520705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabeb96b8c4172ee80fd657fc32d1fe2f746379388fd36b62fa375a0c6d92b55. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJJ2520785.