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 0x3d0bb3872c61773e0ef1047164e53adc1545fbd3d93a8daac1b66fa6a876a6f8. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73c57b5f-35c0-4c1e-b055-a6df140ee271.json and https://artists.proofprofile.net/proofs/artist/73c57b5f-35c0-4c1e-b055-a6df140ee271.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 0xd95abaedc7b7d57b4fd2b9176636b0e84eff57905eb9a8d7fcd3749c55da8398. 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/QZFYX2087487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2641eeae9ca7b1b6051c5f3d5a79bfd6802f0d46a2d26f410315e7c664ab778b. 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/QZFZ52010816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa714db7d4b38c32535e76f7a48808b095f704af630bd191cc06b11da7b9ef249. 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/QZFYZ2040264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eb09be40415c2b76f9669e33ebacc80025b6b30d9853f93e6f7a9e409de0c6. 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/QZFZ52010818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e495b59f486a63d4b60bd8d990d6ace503aac875138cc0341fc2b0c7685914a. 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/QZFZ32016330.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4febe682c21d850b2047d43650874e9db0866e211c8d97b557e1d040094b029. 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/FRX872190925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2673f4766eac9b4ea717275515f4174c526aaabc3db381f759dd465b8d1cfc41. 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/FRS182111653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e495b59f486a63d4b60bd8d990d6ace503aac875138cc0341fc2b0c7685914a. 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/QZFZ32016330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4a81623fb92a3d0158ea136f992c1d1f38e75e7011165726feb931c8a066d. 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/QZK6G2509435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45386ae83fb943de54df91bad6d08abacf7d964f9c9bce4bdd41566a9787a6ec. 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/QZK6G2509436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4aad85a334f82f93e40579fa356387aa7e392440d7c6eb2cbe8a2f548c64a1. 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/QZWFE2313885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49c0035a78bdc447f2a0b13f1964a9a9b9c59caa2f8e2b498be19d8c0497472. 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/QZK6G2509437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3130e833ad1d0feacf39172e85da7756506ae448b91d6b24941df79c21db0e2d. 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/QZK6G2509438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afdc405026dfdf4f1d748c2406ba3ab891d584b996e650b6b5e94626e58307d. 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/QZES62582583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ba0de79b74f713f1769a7df18512e3dbe660131fe399ef331286bb5556e04. 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/QZK6G2509439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae090e18ce15a12d676d6a5f014e007abe56881fb723a67c88f7f47c710a9437. 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/QZK6G2509440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358d90227893d9de88afa08f63293a0ea93302e8ddbc8519a5b5008ff341a0f7. 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/QZWFR2372154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60edc881bb1e287c044ddf28c087b0d802bcc8149272552701421afdcd901ac0. 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/QZK6G2509442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb40725e6688684b7195aaa5f985971ff2b286a7c5e2dfad82e710e09df58d4. 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/QZTB42421180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afdc405026dfdf4f1d748c2406ba3ab891d584b996e650b6b5e94626e58307d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZES62582583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb40725e6688684b7195aaa5f985971ff2b286a7c5e2dfad82e710e09df58d4. 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/QZTB42421180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358d90227893d9de88afa08f63293a0ea93302e8ddbc8519a5b5008ff341a0f7. 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/QZWFR2372154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4aad85a334f82f93e40579fa356387aa7e392440d7c6eb2cbe8a2f548c64a1. 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/QZWFE2313885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa714db7d4b38c32535e76f7a48808b095f704af630bd191cc06b11da7b9ef249. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFYZ2040264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95abaedc7b7d57b4fd2b9176636b0e84eff57905eb9a8d7fcd3749c55da8398. 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/QZFYX2087487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348c637c968fa5a706a8f8751dbbe65a658cd1620df4b2b9c3eb08ce7acc39dc. 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/FRX281700340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf24676e698982fd10cb366ce5665137b31c3ca6c49909d5117adfa79d532de. 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/FR10S1747449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eae02479f757f57fcf8d72af8a2b60360c644656ff6e7dbb478bb71a7cac8a. 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/FR10S1747450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4e5512ef7329849176af1e655995b6e97f53a3ac7fa3b1adc9de920c6c10d2. 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/FR10S1747451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a2841a100f72f340ec05540c5ffb763c7ef3eb6dbca9e4d2d329f2986f27e6. 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/FR10S1747452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84568ada1cd41d7d44066bba80d326567c2b8ee10ff22235d186b5e7cdd098a1. 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/USDY42560984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490217e0ee99885ff984ebb707611c111e4d84968866e5d639e9b33a2407f432. 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/USDY42560985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6e786345fedd5c1e22c6bc5260ba2659c847c2cedaf32ae2a0b9e20e0c2f30. 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/USDY42560986.