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 0x24e47113bddd36b7669c88c90da7052484f19a8c7cc1265c43c5caf46a7a21a1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5240cbc-7a7d-47c5-bb3d-d4db44925293.json and https://artists.proofprofile.net/proofs/artist/e5240cbc-7a7d-47c5-bb3d-d4db44925293.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 0x0112cef010302f2266d4a4b3b1df06f771e610ab8655de06a5e610a53bf29413. 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/GBKPL2148908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3f27078ad4be8fdf8cc87e2bfff327b26abb50d9a5f9616f2174d3daf3c18b. 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/GBKPL2151728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9c0dc92d0a55bead772bb93b531cd5dad5b264bba99849e3d4161a72c7a6e8. 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/GBKPL2154281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad1bf2d250fd36e60e970cc70f69b6e602a0b21c79ed6bca25ba1e77e40acb8. 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/GBKPL2158044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f6541d11e9268eb3ee720fac7627ed11fd1f873177bbb82907306cd531b28. 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/NLRD52035840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834c7bea9a63463f1df3ab2d067821cb90a4edb9fc360c5bc95abb346e342f69. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:58:40Z), 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/NLRD52035853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85034a320f66fb03eded9b86a8936b30f9c5312d56afa4ae58d3fb925789f21. 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/NLRD52035881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3708fdc9493ccb59ff806c7f5449d25d2a026ed121927a6950f4fff2ae908. 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/NLRD52035882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e69ed045ee2b47fb02a8828ad2f8548f0f21a3f64c2884f4e09effc7da950fb. 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/NLRD52035883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd53a532067e2b2c47e706b16b638fbf80f538434ecd4cf66bf902a4ddb1d2. 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/NLRD52035894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58657c9bdf4ee46aade0ab2dfc238bfd90e70731ff4428f8fc69259de55c9a19. 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/DEX261715001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623fcd24a593b827a92a309b9f9734ec78e9805703d0341351c6aa34024ba4e. 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/DEX261715002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71957761845d3a7e2105c61f1703547e5ecb64f24019d4647bd8f49891f0e2. 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/DEX261715003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aac5797cd55082ef444ea630e1332829760dade58d4f6a2b8427f03f1bf0d1e. 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/DEX261715004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354f2123000edc56ec8f512c25639e7bfd27f9e26728abf07f33fcd4c76d76b9. 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/DEX261715006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db3283b1f079d5d45f1a50bfdece43c81c9b7596f829bd4f6cc261aaa98144. 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/DEX261715007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749493ff11c465a7ef21ca1a40f22a25d0475142c1873ba0baf6f24d348a11f. 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/DEX261715008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c04c351cee23e6cba677132c0772fa691deda2407ed6d6cc31998624bf5e63. 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/DEX261715009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc42c8e1fcbc33cd2dbc16d451da76356e383c784f44432500dd19f2fee237. 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/DEX261715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d574eec5de1e895ced5be9ca4a2c2d0e3395c7bad625a6dd1584c2cbf2b8fdf. 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/DEX261715011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665782de458222275f90f0f11bc2c64629da9cd4a4bc6a63987aa1235aaa6ec. 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/DEX261715012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd53a532067e2b2c47e706b16b638fbf80f538434ecd4cf66bf902a4ddb1d2. 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/NLRD52035894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3708fdc9493ccb59ff806c7f5449d25d2a026ed121927a6950f4fff2ae908. 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/NLRD52035882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85034a320f66fb03eded9b86a8936b30f9c5312d56afa4ae58d3fb925789f21. 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/NLRD52035881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f6541d11e9268eb3ee720fac7627ed11fd1f873177bbb82907306cd531b28. 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/NLRD52035840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad1bf2d250fd36e60e970cc70f69b6e602a0b21c79ed6bca25ba1e77e40acb8. 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/GBKPL2158044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9c0dc92d0a55bead772bb93b531cd5dad5b264bba99849e3d4161a72c7a6e8. 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/GBKPL2154281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0112cef010302f2266d4a4b3b1df06f771e610ab8655de06a5e610a53bf29413. 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/GBKPL2148908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665782de458222275f90f0f11bc2c64629da9cd4a4bc6a63987aa1235aaa6ec. 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/DEX261715012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d574eec5de1e895ced5be9ca4a2c2d0e3395c7bad625a6dd1584c2cbf2b8fdf. 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/DEX261715011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc42c8e1fcbc33cd2dbc16d451da76356e383c784f44432500dd19f2fee237. 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/DEX261715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749493ff11c465a7ef21ca1a40f22a25d0475142c1873ba0baf6f24d348a11f. 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/DEX261715008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73db3283b1f079d5d45f1a50bfdece43c81c9b7596f829bd4f6cc261aaa98144. 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/DEX261715007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354f2123000edc56ec8f512c25639e7bfd27f9e26728abf07f33fcd4c76d76b9. 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/DEX261715006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aac5797cd55082ef444ea630e1332829760dade58d4f6a2b8427f03f1bf0d1e. 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/DEX261715004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71957761845d3a7e2105c61f1703547e5ecb64f24019d4647bd8f49891f0e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:20:10Z), 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/DEX261715003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623fcd24a593b827a92a309b9f9734ec78e9805703d0341351c6aa34024ba4e. 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/DEX261715002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58657c9bdf4ee46aade0ab2dfc238bfd90e70731ff4428f8fc69259de55c9a19. 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/DEX261715001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe528bf1046b3844c084806e333fb777d3e24d47ffe6ad66ada321a127e34ef73. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEX261816102.