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 0xe83f4b1ae141405f80d37c6b71e4c76ce45e34ff83af4c5608f5facd6991b693. 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/655cb0af-5df3-4434-b514-281e90240fc1.json and https://artists.proofprofile.net/proofs/artist/655cb0af-5df3-4434-b514-281e90240fc1.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 0xe590f4f10ab0dd5006c3bf803d32fd312c21c9b2f17802e07803a02b21ea5d95. 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/UKXN22242750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99798244a221c8fe76e1b25dc0611a173ed5cfc535f6d13be550f1c73774d42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKXN22242753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa706fd4c0e89ec4f8c4038fcb6af26c1000872470d2a4aee5ab519162dffb39d. 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/UKXN22242755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025baedd66377e8e8217be861ab4ca235611653c3dc8d5fcc98ee38a8c8309f. 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/UKXN22242747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b395357a5d7434c012f11f58dbf06ac94e80c95ce16a2a65b8e54db41267b. 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/UKXN22242751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaf4617567b982bcc065930ded18b413acd6e484c37c11070fb4299b39ed4ec. 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/UKXN22242746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9a58904dcc2165ef26424f514a57955ae41204b962d1b557e4289f67390726. 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/UKXN22242748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7f54287caa629d415c219da3eb1ceb409325600db437e641a0c3c7b47c853d. 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/UKXN22242754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6929b7255b9a1d1b18fddfb0dd7b1d03c95a88682c5edaee695f77c403436f0. 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/UKXN22242749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8810b56d1e6e1722699e42b0e970446bea60d166b167566d133f6c8d3e92e8a4. 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/UKXN22242752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c094e3a6f464ff00d04e3bc844112a812b0fd7991f5e04c6bbe8bc0bd024cf2. 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/UKXN22318981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa831f44add487291e89e388a3748b8ddae57054a9d91caf0bae6eb441641d717. 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/QZNWY2396266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663ea5af18d1b3cd16e0e544b660a82e166e999a76aeb6da6e55ddba289f2fd0. 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/QZMEM2376133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013e47bbf61edbcf56f73f92446e81594c3332bf6813b5f857d9714b0f3e257c. 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/GX3Q92352660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edabce83c358a3b6e5b0095ef989ed5124245d784830938f4d2d1958d752e7c. 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/GB2DY2201062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ffd2967e03aeea0a030487896d7941c152369ef868daf87688463b31cebcf. 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/UKXN22234180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7e3fb7d05990ce4e5667a3110be0cb05cf9d5697bdba5194bf577e9c242047. 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/GBLFP2279282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f76ed31804028243855cb8cae969037141ae04e2ea7c01a3cbb2c058d2f3bc. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBLFP2201052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f3f57926826d98b0f0fb2ffd782ddb316d9c3d8277d9cdefbcb1bbeeef6997. 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/GX3Q92197088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207b6f7861acadc6096396051f625b1b2db169368587fcc10f2f4670a0551e2c. 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/UKXN22173316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9521b7e5b3056ab8d8ea5bc2ccb7096154d1916f51fd830722a34b4baed9d52. 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/GBLFP2123374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa5fbd0cee195c2197eb0a601d706d3f1328dca61f4fe9f828bca362f6ac653. 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/GBLFP2104574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490174f700d2b803ecdcf2e3ca654a5c2d57599ff0b37e94923340febe6ee062. 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/DEZN82367609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af84a24fb52649981a59fe5f1e10e3fb9baa11f0bd57b419a6fcf6148565db. 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/GB2DY2201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edabce83c358a3b6e5b0095ef989ed5124245d784830938f4d2d1958d752e7c. 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/GB2DY2201062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4336b94ada595c85b0906be8ac1de75e11342fb9ebe8ba40339d3e21d48a77f1. 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/GB2DY2201063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9143a3868c544d3e8bcc9c3ec78b23e3b393155b64230c931c44fa57d22ee9. 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/GB2DY2201065.