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 0xf6e4cefde83c12381b9c0a3aab4246d0d4bee8a191e5dd8a6804daaaf55a4a3d. 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/a50aa03b-86a7-466e-92f7-c960d7adcfec.json and https://artists.proofprofile.net/proofs/artist/a50aa03b-86a7-466e-92f7-c960d7adcfec.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 0xc550e13d6d36646758ba0f7310d2dbb070df860d643aff556586abc52f519107. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US3DF2244676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21b45cf96cea5ac6a5b8e2431ab5d3de572fd3bc0411837fad55b7519846cf7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:58Z), 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/US3DF2253750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34682acb071ed2d0fe23fe8ae6d034ff655332e333384ce2608054af3acc6516. 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/US3DF2270546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d7f8276bca5f9910c2954b2702da52feb93a6b2afcea33dfdb9bfa384f7b78. 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/QMDA62205797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7570e6ed237a638ddd5e9e34c2f0ba01a898bc44e2392b80384b4115218f1f8a. 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/QMDA62237540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0b59be5ac8d33218038acb710ea54639949472e35e4075463f684b4fdd8a92. 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/USANG2215828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24894b36ad38b5b07b54e78ef4a4c8344e33142a2f4c4ffd929b0e83e73b740. 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/QZTAT2221507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8764feadcd2348a45176a0050d3f5c964fdd0e0c94e07a0e596657ca8e1162ac. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:23:41Z), 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/QZTAU2258555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eaf41061ad3e604c5ab123071625ce03094d99029d917de516fe500e540bce. 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/QZTB62225069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf49cc8b8822ea358543b160a261655222e555b4875da997f6a65341493959c. 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/QZFZ32352736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e07135f061db9712ab380a2146c9f4e97616318d4d64030c971c6c814fac93. 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/FR59R2310623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583dafc3f011cd96656ab84dc5c765184a80ca13524bb35b4191d0b6abc699fa. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/FRX202340233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dabdc59c19f59fcc80bba8d6fa8edc43139a4b972596c31fc95c3c14614919d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA052317028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4894d9b6538e97d03501372d349793bcc8eb421f8274c180cc3a73bc4d981d4. 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/DGA062318537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f26ee3c5f78364122d73e51c8a9ed2e31347824b0e7094685278576b3d72b9. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:10:26Z), 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/DGA0L2304771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8496e829508aa25a33e8308d6012e15ee00e729b59ecd3678457c234c79f90d. 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/DGA0L2325759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8568f8188e777da53157459360ebf7d167c5e39bc68b3665213065beee005d85. 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/USANG2449862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef8c037c43acb0eea533a1206a184117b7b377adc0b70fcf795dd1c04e79901. 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/USANG2492053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78721e8bd3d73b8853f065def91769a663cd88d8355e14449abf650559c885f5. 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/USANG2492054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58035aa367b577df134fbef1bd29d831c6bb4aa12f9bd130ac1c591e637bf70c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR96X2551274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f48a40e9b40f53bc4cee0f77ed24e59c92188efae0b0794c8759cf2961626c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2540418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee27cfd273bbe5ca455d93b35668abe8da1682f1802d27a9cdce979e1234ef. 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/QM6MZ2436208.