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 0x078d884c3e1af4c90db18dc4dc4bbbcbe3883ec3edda19f65b75542a6c1b0dcd. 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/dbd077df-c293-4b0a-b596-bd75c0040b3e.json and https://artists.proofprofile.net/proofs/artist/dbd077df-c293-4b0a-b596-bd75c0040b3e.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 0xccfc9f999615681a71a4444a8d6fa8340d2027c93aef168a44835cd8546c8930. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZMEQ2332011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd28a8d844ff9d4a1a893760b9c318cef3aa2e1c957667059933adba00d14ea. 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/QZNWZ2395435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11421181ab2c23b062952732ddd3877e08b9aed127256f13618d034fa3304fd1. 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/QZTB52391599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299612f4377a2cbca43010ebf8ab90218ce9e6bcaabcd72e7b54301c2446498a. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:26:40Z), 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/QZTB52391601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67161d479d8565709093adbb69bc0ba3836e5510470615246b630334e0f90e2e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTBF2305360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730a781bf49d497e6a2a8285080267bce0dfb3587c0d68db9e822712878e4e9f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTBF2305361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40deff48f4ce8909430d3883119be80267d64463d0b8cd3cd966e50428e7846b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTBF2305362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9d827ea05e183635939ba0b70fa42fd9e6128c7a2d2a41845729e7832ac613. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTBF2305364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66eba731e355a49a135b47f6f89c30a54e55f7522f352e959871577aa089627. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZTBF2305365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef643e5e8c4799cf4737721c49c9cc334dcfd30fb3a7f27337f12fec4ad755bb. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFF2317819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d73e9135fb4ef92e9836a37d0a8f650e608f6a8e109fbfe7995afc13ce68e27. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWFF2317820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55900ac6214c91eb88116eff03748e55223b6893da8bbd23aa83fb62b0f83d5. 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/QZWFF2317821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903be196f2c4d95265bc075e29372a7e5de67189c29d20a563fcfedccb6397a8. 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/QZWFF2317822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db57d8ed86bd0b5a1d6f9d002dcaf9d9b9425937bf5005de7cb7c0cd2f713a3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFQ2320411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc2c04daf2ad073822a4c4e8af58cce6af5e7b56ad3a575ad343ddb51820a5. 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/QZWFQ2320412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80353fe5d043ebdee0c66b53e7cb374cdb8a2a13dcf4d00339a7315b7f4938c. 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/QZWFQ2320413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5a1e10604a9fd06dead0a9c8eb14bd29c7901d36ab1a3f99191785a84b6551. 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/QZWFQ2320414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a364d12626c22e8170a551bbaa40ae660232cf2f42fdbec45952e36cb331b3. 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/QZWFQ2320415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a0f7a8d510fb098fd728330b1b262ed41cbff9454a06042169e086385db0b8. 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/QZFYY2417554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4ad560ed313755565cbc6084dfa1fd493c74955668b872aa4039738a0cdbe. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZFYY2417556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e19fcbac3264fdbb15579f60ca420209d511c6208bc424e8af9c2d0486a32a. 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/QZFYY2417557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6937f2588c5339200fc85300dfcefc64c5a30f20ec3f527b9b324748cd0f4345. 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/QZFYY2417558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28e2c3a8ad822512005813ecdfa8cd0445e590eef398ffed66d7d8eeec7df91. 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/QZFZ32430916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8849fb84d6a36ed55ff12ebc7ed9cae33d24bca37b1ffd3a2c92fd0a4ebe66. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFZ32430917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f389599de00685f0aa6ceb2ccf9036f313e3a0c3c9a2a1a9e28a6fcbd39aa3. 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/QZFZ32430919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5332d403f6780127227a75a71e08c9793df52c8c66586291b7fe946dc62ed1. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZFZ32430920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f0a5d95840151a819e714dce10684dc432cd97730f4f136d3e332a8d3c1e5f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZDA42433515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f78203863a6a69a9f316801d5e0bb3ef9251d1b4a90bef868934849383c064c. 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/QZDA42433516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58978e97f0dabffcd4dca7491afdaff254119b9641f9e136062340f117014bc. 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/QZDA42433517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095ee51b5b92a195bdedf816f4c88404dc430d8a595d1dcd49a9e6653b26b4e6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA42433518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b39ae761d3817495181b37b3cae4cdf5de66dc67fa7dc6114ae809a6568b53. 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/QZDA42433519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c7b73e3045712159697bd0c3b792081112a18b7742d933487fb93e5f9d820c. 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/QZDA62466794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45def7c5417e7972a0af4e047344e9246a39d8f295828e75aeeda0d28daff07. 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/QZDA62466795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f289698eeaf203a9c5a8994108524c9cbb1b29a10eb63e62d48693c8c3beb4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZDA62466796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef700373b127691542242ccfb66ed1d9e113931acb1a45ec611045248d6cba5. 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/QZDA62466797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc634a8f7c6457fa5143572c83b1b396eb8d70d0231047b23019fd2d094c1b9. 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/QZDA62466798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926c700c72f082d352f6431865b82098b0f6f1b63e32d02d74df66ef980f2ec0. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZHN42421701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d207564446bc10dc1f26512291935059d1c48e031dfcf7d78bdbaa14ea9037. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:29:48Z), 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/QZHN42421702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b858938dd5d15f9fb6759f3076412e3fc784dcb17205874a5e39c93974f79. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN42421704.