1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0b9271ee20fba50833f766bd327badd77cb02c265c9ad9d9ba18a6859ea2291a. 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/017a82f7-15dd-4b0a-a4fc-bacb04609602.json and https://artists.proofprofile.net/proofs/artist/017a82f7-15dd-4b0a-a4fc-bacb04609602.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 → block OTSBitcoinBlock must exist at that height 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 0xbd1dfb02bd10995926083db00ee7ee9e575b0f6660a4f6af2b2ef3898667035a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:55:04Z), 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/CZD400301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafed320a4423dc2134d6276a501ab7451b6b1715dd88323742eed94bfddddab. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CZD400301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32628f442b4222e2a8e23a7685e552dda493ac6ed0d2f3a90077c83e19e06b66. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/CZD400301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035431eae2dc3c2b4a1abbcda5f5c32eec0b7216e1ea2daf14c04a75c9ca5f7b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CZD400502005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70513682357bd807791f301c64a56e368e81bd63e4a7543306274cf58d9df62b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CZD400502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d7d6eb4a50b9cdd9d8465f8c77a87aa3debdea69fb946dbfd396bde74a07fb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZD400502018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd680d4b7d3b51146ac459cc4437d2c97a5a3ac0deb2313e2192f2647f7cb43. 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/CZD400703003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb740b9c4a45e125887f614cb95ede542ca66bb09a0dbe2b5291f83fe1ece757c. 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/CZD400703004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa24b4d884ad9db308d8604b555a8577cdb60b50e5de63811a6a441265b8b064. 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/CZD400703008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0443ee4843dab0ae4f6744310f9bcfa7044513bea11d7b1fe56a29e0e500d21. 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/CZD400703010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b20fc9bbb847feb90cc53231f79244828da7eaa4cf42f1c1dbd15f69542179. 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/CZD400703011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64feb5f670b3df153f2a9f011633b7b985e46e8ab8e586d2bc5ba7d25aeae78a. 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/CZD400703013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cdb856b04acd626259b44a82beee59774606bf83c49bcea9909a8f6dcb22cb. 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/CZD400703016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435f76c83414cbf2acea1a7443cb6b50ac585953e58133932439d3d67429112f. 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/CZD400703019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249bd0adf2c02defd32daabc250588b2da5f75b0b9e99cd09de15e8c6c9bb6d6. 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/CZD400703020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c2055c4bf8856604a249ac37448e836410874b9608386c8ed573b221797026. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZD400904004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8413c95bbc72b5dd83eab9954fc8e065fb32b4c04dc7c1920876f23f00aa3dc5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CZD401006008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced9344a8d06f4d595a2ec27af7f0526c8236bfc4020343000417096d1502efd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZD401307011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5cb64040ff84f3d0c8a9d02d28b625b31a318d9bedee51ed81199a9191a940. 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/CZD401508002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc38a69f53f4ff7e7dd5a61dca0150642c9b25adcad27c26a53f4a6e8dd448ec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZD401508005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61de43cb182dd408d8ff73cda2a0b4c26c2574599377070c85e60587c617bf08. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/CZD401508008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ff882afe85fc8835e573b0e09baea63e2a567d9e726394b553b66fd9db8d08. 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/CZD401709001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e659d2baeee2084db97dbdaa368f38bd76b731576a3c204d332dc0cda9c1d02. 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/CZD401709002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda109793230ed7ca172f890b8419f15c2b9444041c6fefe10d11f23c25001f58. 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/CZD401709003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d888466deb6c9f045632e831348b315f71a3530c7294758470fcbefa86ce37. 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/CZD401709004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaff4cf6b51bf4b74e60ac1ed2267105aea25c4cd0df19b606a5fa63fe061e4. 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/CZD401709005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbd0433c28e527a1ccfa9250242ddf30806995c99d8d72996132bf5c9e49070. 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/CZD401709007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9970c7f759226543f616e9bc437f6de5d64baadd70df0a754d49b660a5d38476. 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/CZD401709008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d91310655c48ed1b9efe0dabd12391d9db68eee65a0fd42e38c33918113b7ce. 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/CZD401709009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b3e179eef5c5939675cf9949ac4c8273cc13e44d2d56a869596fccede21fc. 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/CZD401709010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c6186c2c82b374f505a97881e6934e4522d655e21ea17f8562a8be375b3635. 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/CZD401709011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b72a87bcf3da3ea7e4de8690ee05890689d5818cfb66ed1f9880846f0650c92. 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/CZD401709012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722d00e098e65b09e0994212ad0dccb1a170a7fccc10f5b84883169993c79d3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:46Z), 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/CZD402110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127149a3e267b65e35d66331e7a22e053faf059888584fa8830b062280ffc19. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CZD402110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf1949d568074031692000e3d0e85ec6add48442b37974ca3419da4ff89855. 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/CZD402110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe16beeb59915f1f890fde03033893abc0c0f19c177a2af22b91c93e575ee9. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:31Z), 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/CZD402110008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc5ef98cae062b2fb96a7e4b2affe7449d1e25716e44974e37eadeebb39e919. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZD402411001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e82c9cfe800609049d5576265d52835a2a3a3486f3147259e68d68adfa97c44. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CZD402411004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c6186c2c82b374f505a97881e6934e4522d655e21ea17f8562a8be375b3635. 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/CZD401709011.