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 0x9b952252595e0e0932f3dff443eb8b9870afd851a4bcc250478c6f0de99821a3. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7cc530f-a841-4549-8f0e-c201809ac752.json and https://artists.proofprofile.net/proofs/artist/d7cc530f-a841-4549-8f0e-c201809ac752.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 0xcfc8c9d380b7630f68759e4a0e5c6b712c65061af9f85bbee20fed31f8cedc19. 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/CZUM72300614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e94ab1ab995a6e7fd63949ac1a62ffe964cc991ec23dfd7a7f3c0ccd057a2cc. 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/QZK6L2458479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd0acd3eae70d50fa5ee0bddf020d7b763536b824e34cfa349fee1b64c66e7. 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/QZNWU2458690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11614010b65c2af59b781aa8982daacdd7a6d5c7e361dddb6471769ec15f1a8. 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/QZHN32472911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d6ec9e083889290170985eafa6a26398e40677bdd39c7f22abb0b850de0f6. 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/QZFZ22442913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765e3ea3d652296e3878dd995ffb26c87714c249f6174fbf052fd438413d60ca. 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/QZNWT2316038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3c0de30ea243998882cf14dcb27a3a01e41edb0ad8e88ff69e0965f052f270. 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/QZNWT2316039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e538890edac635a9a7049624bc5a39c292ee2c433a4a82cba2b1a39b2f9ee8. 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/QZNWT2316041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1e685736ffc6377cd6fd19ce046eaf7f5f7e63881990d6a6d1e4b2066b123c. 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/QZNWT2316042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02dc5195ca960f77b1d3da03125a54fab8f9733056aa45390bcb1b68f3a367. 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/QZK6L2315200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d51453a0d799fd7440eddd7fe8330673e0201354f36240f44c52572febf8106. 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/QZTB42431134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc1dfd4332978d3cc5cb3f657545839c29458bae532ea14fd49d627cc5947dd. 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/QZTB42431136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f366884154b1e0ecd541d02f536f3f294402cca0efa03e9c991815f8b0b42a2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB62412526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e58b272d33ecb8d951b163dffc500f81090088609c476eb4577780596569dc. 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/QZNWW2448161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb208f62ecab2a15be9ce4f796a0b8176127ae261c20c4dc5399263fb5adb2b. 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/QZTB62412527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12e8163a2896e0662a567ebfefe136a7f71888d498946becde6370723f2002. 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/QZTB62412531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77261fc721d78a290a5f99350022ef300d8f0399e9e9bc884102f8979e7e4a16. 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/QZTB62412532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b7d54041d8deaddca9dd4b5f04715d83d5512e95a62ebec26f5bd3931eb52e. 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/QZTB62412533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f9512d6f7e6d065514c94c3e4173362f2976426e6a56c3099f2951d84e5cd. 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/QZTB62412534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ea4a0a6ee7d0cd5251e6c187061b5273c1d6ec2a190d7d7bf4792a31f83f8. 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/QZTB62412535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7258abde2917ef224f2b1fee0d925fe5485648a12a099fbb7c9477a5b13a1efa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QT3F42450432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3f69e7dfcf97f8b1ccb59c5ab3d8bf5aa7d9b3f248f910a56b5e54498be310. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA62558844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1523552d7c02e4ae1f51ce3b002bafa1f9dfc20e58d50ec5af184b6a115f663. 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/QZDA62558845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722bc40b18634d134838d04d6e56adc105cef8966809fe8b817de2e12e07747. 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/QZDA62558846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9730fb0d3f622651329ca6b57446f99e085c7c7a2564d67a797f979d20eb79. 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/QZWFR2498460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95073175d7b916a417af55c7555d74c396a1efc424a5dd29a8e3c671670f4dc0. 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/QZK6J2591603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02daf2ab5ef8d3bcc520db18fd2a2aee1dcdf51a7a877215d25f079480f4711. 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/QZK6Q2598839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e4fd5383c2acd3907550f16c5b0c952385834baed75426894e643dae3072c5. 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/QZHN62586761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7258abde2917ef224f2b1fee0d925fe5485648a12a099fbb7c9477a5b13a1efa. 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/QT3F42450432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9730fb0d3f622651329ca6b57446f99e085c7c7a2564d67a797f979d20eb79. 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/QZWFR2498460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcc49a223e693b087ba97d8e69c0e5d5aaf17fa21a31383f76bf5b765cf235d. 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/QZES72341602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ebc34f3aa8d4c2222d245e018e86328c24780201ce28bedbcf5a0d9470a61. 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/QZDA52440175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea1ee1c16e40058478933a958bd249c4b27d4e9b7ac7c90dad60d456f39a3c7. 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/QZDA52440176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e65b59083a58a03098d4fa10d0a34dd415ab29beb1cc0e8e09ee6329397a85. 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/QZDA52440179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db4c502160a68c7c571684d715f6020ae4b6e03cc4d6e6b056d077a08c51eaa. 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/QZDA52440180.