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 0x752e9ef14e9234994b81c5814fb90381548377c1cbb13a7df9fbd477279b8521. 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/0c3768ec-270b-4399-8766-51d763e327fa.json and https://artists.proofprofile.net/proofs/artist/0c3768ec-270b-4399-8766-51d763e327fa.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 0x7e47e4f8c49ef602b81083186fdaed5b4f26b38a4f7f319c2209dfe2afd64443. 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/QZWFK2309998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75358557d3dbdf28327ac97d91d81973a92686304cc6bc702085675808b2a592. 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/QZWFK2309999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc234607f03478cb96786d6e49233df0e6135aef034549ceace26e694b3d7c760. 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/QZWFK2310000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090d895ae5630544418925ff0995f8bdf3deb313e65225cc25d1b94047af0df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFK2310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804cf39d0c889bd0722b6d34db07f6ca79220f61ef245fe52a3d9ffeeecbefe. 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/QZWFK2310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c0c39ccdbe5bd727724a2d3f26be7954c7b62bc823e20c41efe52247b75a73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFK2310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a8f3c4353f71f3053e411c7b25606db21ec108cf410d4043fed89a513657c1. 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/QZMEM2312102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe64cd113a82f3dec786ade2ff4120c5195c503e787bd61ba6ffb30de57037. 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/QZMEM2312103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecedec8a68c391a7be01e071c354ecb3588aaa29a69dcb699f45325c1a1ac22. 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/QZMEM2312104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d9422437c28ae9c7f80a19b029bd74c49bd5514e0efb30271e22f9803de184. 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/QZMEM2312105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f684ca2818c889f2aca0c6d1f82a2e14d0daeebd35c3e465c083ad452c660. 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/QZMEM2312106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23ba5dcd8b2a4b8324a2e2eceb1bd7e0a40e765dc0b97cc4900ac270d8eaba8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEM2312107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b1b7abd4873232ee857b9ac2b84a32d178f36baa2be4f766ded525d51a95a9. 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/QZMEM2312108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fccaccdfb4d8f80c9461e823445e9454622287b120426502a2f872afeadf8cf. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZMEM2312109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf750cd5f499786d70d45c3a843f44100e46a18ddbca9a25ed0c3785c1fd8c2ef. 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/ZA56E2416736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84793fb0aa8fba319ac4ffc8c042994e940f09282da6d30a687fb8783e13e2f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA8372446750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ce1c903205f00620fb1d90c53dc9884eb7ba02192103bf501cc70b1a1ec82. 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/ZA9112464262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583d2a9592186d647847ad95bce6e91fd54511174e06cdd6217830778056db3a. 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/QZHN72427134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a58490af73e59c8dfeb39c3aadee90a14fad7d5b9e657b5c00441c48d58fdd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN72427135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47435a9c73f7bb3d12eee11f5554095bc526aa50fed21bbd641ff6d2544e724. 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/QZHN52429183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9773d49b0d631219b13c5683a0a101c4d1362a145b18b3362eaf4c6facdb37f. 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/ZA9742473596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80202d451aa12c0fc59f23f78e76b55ec3c6842c618c7b59b028cdbac1a49e7. 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/ZA6442454044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d77ea68de4c8abd4e84337e965ec9482f8a780041473c1557cbc4bd650c97a. 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/QZTB62314133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a1fa590232ed1898607489cd66baf1ec5426cd9579966f3308a36db0b6e5d2. 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/QZTAX2335898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7917f2491fcd5a6e41489e316e45bde575d17fd9fd53aaa8a26a4c26edb6b584. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAU2315751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62d49a10b1a6096c892fad7fef0ce9d619bca43f2228fb18ce49d2cce895a74. 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/QZNWX2322971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9ee78bab1ff605702edd5f92035f21e9b822ae1fbe91783023fcb90b4bc747. 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/QZK6K2371329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa8683b71ea5a3413d37b92665b0d4c048a1742d2188a495d2cc503a5724f2d. 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/QZHNA2341476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66a275f61bba2d7ffbc3de25bb470f27552236bb2345aafa4ecbd166ff7116c. 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/QZHNC2391984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8ae4baf6c106dedd4c74ba43f1967ecdd89e6db13e8abf1908daab3a4c6a5b. 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/GX3Q92325206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1dc9022d12463542618325a5327e2234bd41bedcfffea36ddab73d36079973. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92317523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3290d5e969c732b7abed8ebd2ae628ead247368e6c9c86ef0d4762cc0eca1140. 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/UKXN22274266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9266fcf4fd4bb8f64b1f7b6533b43b61bea3093d792c9c10b2a43769cbad5429. 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/GX3Q92106942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3c573b39339c84870cae91cf9a2d645092630afdb49be99ad11c19928f9af2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKXN22261942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58a9175cd9ad1f485b5954c4a139968bd78706130d27cba50a66e219c18c1e. 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/QZMER2274559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76689936f9cf28ad4d3905a268e25bc0b530dcfbcf6a8fad43b6aef6c1fb63cf. 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/QZHNB2212179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3560928d58c543ffe595fe027ee23f43c20e9858c86c41fc9d607c8ec3ab8b47. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZRP52185753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39983447c5295b44234b92bb415f4694d5acb241ba143674ff8644e9e7b0897e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWT2192293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a684f7495e684699a348c6f842ff07bb410e0305ce7d18d761ffe1f8040898. 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/QZRP52185752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a18bea41afac3d7b879e5cf795a15a90775f69458c80233237869ef8f8b3d8. 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/ZA56E2315054.
Umdali (feat. Murumba Pitch, Brandon Dhludhlu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3296b45cb9f9eab0cb2174cb2b41039de01cb41ada2297b950b09df7ca6ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZA56E2315057.