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 0xb845ace5d31efb462743bd6efc4bb1811ab83b33c2ec0d2c14bc8e08d91d09fe. 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/b58bf9bf-dc92-40ef-ac27-74ae7da35b6d.json and https://artists.proofprofile.net/proofs/artist/b58bf9bf-dc92-40ef-ac27-74ae7da35b6d.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 0xab79f553805bef73f963a246f273c046c32546635f60b39653bad2f6ed9a5c03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USZXT2250213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005b5e7a08b30e86fc4824a1e69d2b2b65901c2eb3df3db01f8f1e24a380280b. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USZXT2250050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f19545a810771aa22640d5dbe75f9685b9ff12633ee8c327c32a50d0d678d03. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USZXT2250114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2de14dfd0cf66385e8f11530487f7b9e30596d1340db96826e35de57d6e028d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USZXT2250209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd781ebda237b1b47a7436625cee8d856cfa8b9ec65a1c0ed6cd600f31b87ef02. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USZXT2250210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900eb3ee2c2eaf447c7d5ced35bad198981f3fea40b0ea81c3d941b408639260. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USZXT2250211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124afad38d3b675f06336da2f740c434f57c6a626369689347f3d3a8b8164702. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USZXT2250194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15ef50fa4c1e74832831366027d7ec6a158b993660689300a2402c18f7b1f23. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USZXT2250212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f61507c5b0d4aeacaed2fa0dfa5081b851a537a00e8bff16f2e6545c032b24e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USZXT2250214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a84d0253bff2d74d8368b195f50beff87244b875f7b2c0876a9a1586f71cc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USZXT2250215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa9d17beac239f893576b5a44bfc90b30127e4d13814fe5467f68672ed897c1. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USZXT2250216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9145be8d06965b426dc7ea90244e3c2f5c30a60412b347dc05300fffa7f91e. 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/FRX762144329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d2d3428859258bd6854291a8ec043b584eaf44fec45b8e3ec22d43093874d0. 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/FRX762144330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad7754c52d0f851d5b90b22edd4201022d243f804d118582f8be9e6b7679b0. 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/FRX762144331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3104bf191db7200cdc009c9784d2caf78033c8d34d833d60643bd49273eacb52. 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/FRX762144332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187ec147f69bc355793219185c59d54071b7024871e1fe6d7a5114bf1804c390. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRX762144333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b76d5d4b77e6d5f69a54e0112573e38d3288a5beceafc09bbf85d96de6d45f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEMM42401062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df9928264d60a6328dd7af0c9326c483c2615d18799c7ac66ef0850a799dfee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEMM42401063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557e47dac3a055e9f8226dfb8e9b8017ee693c17a3c61b524cb789646e56c8ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEMM42401065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d88a7eedc6d3c11bd9fd4e359b5660efc31573dd4ecc77d100a7db9e478a39. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEMM42401066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73454c5f4f8a60d6e3000fd9b1e5ec3224d6ea848f5cbe8a1d8b88176eb5d6d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRDX62400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c6151b92b29e152699919135950fa595ac41856b3ca4922eab147eb0e43aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFME2373914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0cc66c1de70f2301415ecfcf401ab921f96e0528fe44de5ce3690af2f1a3ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFME2373915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0cf847e45f1f221e78024f631929b0c2f7f031668ff005859fd4014d801c8f. 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/FR10S2251867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb87a9d95b9e1448fac50fb81c9d1f2e8376cfe11311d29caaa7b1019cf6bd01. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR10S2251869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa7e6806fb3b6fd6bc620f76edb7566c3557c9cdabeba35eb45eb77d3c0fd0a. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/FR10S2251866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9404efe4d9e7e6caa8e68d2d7265cdb1f5abd2d3dec9be2aab30e3f378a4ef2d. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FR10S2251868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76de2d575ff3bb06ab2199ee022bb42e49714665e277db5e60e49aa12eb5841. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:35:41Z), 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/NLCK41087438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7474b97266dec21499b0a603667a6a338864eab88376b73b42a32e0de13ffa17. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLCK41087437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e0d3189e653a81223677a296107b25e2d6e5021c985d09dbe7d719157fe9e5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLCK41087440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd041958bf6c4404c2fe56080e48a02bb136362178c94fe5a6b63e1d53487753. 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/GBJX32163602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7e4995858966cd61dd10b1a94220cee0eec0773c7ad8efc7e9996088271b8c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBJX32163601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74fd57104afcf537852c27b469a2114f708e3a5f0efeae2bffa0e9ca2c6c7d5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBJX32163603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea526f587670cd0d331aa49a160efa969fa77b90c7adc6e58a847ba63f1fdf5. 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/USLZJ1957629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9bdfbe60aafe63e2e544814713afc5e5a779304bfb4069fbc3adb3b96070e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ1957630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe948de22443e3e8804a9e69bd2261183fbf8d86f14baf059dbe86841859733f9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USLZJ1957632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc750ae1a9bbff9d24024cd6aeabac4f6a92df7885f5eb4a0c0c7cbd95631bcf8. 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/GBJX31839008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254f903aee40b2f33c8ccdea2dbf18b631836219f9c1bc7de5a9f234d08bfcb9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES51973940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21feab34f953baee33899f2857bdd042ba4b36e08ff27b057309751ee8e41275. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZES51973939.