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 0x4b056a7105ef235ac90d32b9dbf992c1503de2c29e8589a9583ccbdee8baa942. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7075869a-80e1-48e5-a88f-1cead79cce06.json and https://artists.proofprofile.net/proofs/artist/7075869a-80e1-48e5-a88f-1cead79cce06.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 0x237398f4e7852dece993999802a6c79c212e3923b1e08bb67283159d2b7f5363. 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/QZFZ72317381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f42076b37839555a44530a760d4dd6e941250b9102d548d2279ddef76ee610a. 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/QZK6H2468400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b13e42110d144e7c748b7ab6fd804feb3edca5d7c8d920afbd745a92ec6df2. 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/QZNWS2496845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b48d73e89b8308ce92e900b5884ef9e5ef0d228942e35dc4cae1c60a02801f. 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/QZMEN2413692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eaa7f589e39c4ab44de0a418a37398d333964c6fa4efb9ab22195f132f2464. 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/QZES72408624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af34f54a9c0417ae9014f12376fec3b96f6eb844068a4fe27424440768a9a01. 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/QZFZ72492215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9797fd34be49d269b9fd679673a6c39034bbdb264bd8f6911aae3ab073b17564. 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/QZRP52379413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e7e2cc9af0b1bd7aa3956cd87c456746d57cba047fc0dd934632452a79e952. 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/QZWFP2385595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563d91173490ad34edd78d9cd7e067f9ce273887fdb68443adcc134077e30871. 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/QZPLR2372153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff41d3d5c7c0ae8a4062c308a4b935c29465e38f650c734afaa7428796ddaef7. 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/QZES92328510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb530f113b011a255695bd8884faaab4a96061cd20772646259eddf1e26b776. 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/QZNWQ2490664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d256c96bb147aea3e65505878f3dcbeb615353766f9aad0d27008272b469f6. 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/QZK6F2483457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de761cb9b41276ab1fe777e0365534568ff4f07404f48ae31554ecc405efc90. 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/QZES52444227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6855df72d1b3edf3859915a220b01c78576bd6fa49eb09d5dd1bba6173d88dd. 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/QZES52443902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8b949cef930dd3d366f97e6c4f7f5f2486879d9a792fe4e8b0cfa094140a28. 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/QZES72475351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bf64bc745c764e999211c8e4782a0e1841b352f53b98841380bb1d02f6888d. 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/QZHN32436390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf310b9f0bb3b3966c5b2ecdbd513986bcb7b46ff423f564875dd7d08cb9a6501. 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/QZES62437672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64522e03cc02dbbce3ef54910be840ec4a94a73f531141dafc54ba02ac04b4f5. 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/QZFZ62490190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4369b6a4266a9fc859be667a49110c4fdb7d6d3ce5bc56acceef5196ce74c454. 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/QZGLM2448314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f33c01468f262443a90fcf6d707687d01d27a93956f4395601d7b60db4bc5e. 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/QZ5AB2497388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74ecd135dffee84705c5299025f5c3a1faee71749ebe9429977afed4dbbc81a. 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/QZES62475152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9594c652e4323665db09531bacb7c3613b08fe21310bb0c7589594764aa11e46. 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/QZDA62416751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb695347b6aa35f878e086aebbe13cabdeb8a5af38ef21a6e375038cc234cc50. 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/QZFYX2494537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3d42642f5f24a425e300b27bcebcd273e95272a55a0dffae2d80b28902218f. 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/QZWFQ2396176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31627d4f4a272c0bcac1f07ecf278613af7208654b1fb10a9c23b4469cd3f043. 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/QZWFM2398818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b7ba6d315d1fd5d7d0e47f1b5e58725014b683baeb7bf052c4dc86a3559d7f. 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/QZWFM2356565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c98acea1d60f681582d996946bc0604e89bce29389abbe18c4b9a53a298a02c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZWFE2329651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151ce3a45266633228b63631a027b32d8eaa45f332d3f63ec0d2fd965cdb23e3. 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/QZTB72321594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2062d1153628a7f4d780a20c4e497633c4df5fab6b69a12ff4321f4696df67. 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/QZTAS2318049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef82ef1387fc3a0aefed6b80a3a1e187e07cd8d3df408776d11e1d2f31b52ae. 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/QZTAY2330456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb110eb1288b12b2c13d2607b55c3804c8265b0ed985ccd1626621ee2b017da45. 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/QZNWZ2333794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05940c6d41d6b71120c5b9717f3f0ed865c04667f93502152b049a2eb71647d1. 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/QZNWS2384809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb489b9da167248264ca0ea7f13f616d86be0309fc17e60ff2e20cd2c09d7b095. 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/QZMER2331666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc1b3a188d8a3ef24a60d23578f728bd61bcac872e29bc8c8bf32c9b3badc2. 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/QZWFN2301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed414b6f840f3e0aedcc6961bd6eaeb244dc0b1059228845643d07b919bf19. 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/QZDA52318598.