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 0x56758f3511a0536c0f4c1973cb0670ac78e21d2705525e5b41144c31f26b9c69. 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/869f52d6-151e-4ee5-b43c-36292a685498.json and https://artists.proofprofile.net/proofs/artist/869f52d6-151e-4ee5-b43c-36292a685498.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 0x8ec4e2a456906149f799cef2d84d241d6cf0579b492e58a1bad943fcebd78652. 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/DEQ321600190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a145aab37ae0adedd5c6455eb183aacade93034dc840c5f5b1e3e417d4e6617. 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/DEQ321600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7902807b4e248f1c5740b55613e2c0f08f4ccff29147e04f361c1189812caa5. 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/DEQ321600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d49aec7d435a6a4ca66d1135c21f9b69628e684b8239b4ae0076859b37c11b1. 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/DEQ321600192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3bf9cd28a939f1f82f56eed19a9ebc1a4f26c7a3bde559b88d6ab1eed1e35. 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/DEQ321600178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c50905a8eefcf191598a53dd5cb7d2043e1b20527d806a0d67e5ab7d2bfa8. 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/DEQ321600193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a145aab37ae0adedd5c6455eb183aacade93034dc840c5f5b1e3e417d4e6617. 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/DEQ321600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c43d236ce1f18acc4fc8912d254a74f1f031929cc57ff1286be191682f47a02. 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/DEQ321600194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01a10296c2bc3f7831009bea1bee62bc286646dbd51e0265bb9a0e5d737a112. 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/DEQ321600180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45709ef9c7d7525d31bf6a6cdb4d2396d7cbe41a82124af5030533f099469ac. 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/DEQ321600195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7902807b4e248f1c5740b55613e2c0f08f4ccff29147e04f361c1189812caa5. 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/DEQ321600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbbc91ce7f3c0d16e86ae3f2337163cbb31f44240af40b9beeb3447851bdffd. 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/DEQ321600196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34469339a993d2d2548dbd38b0877246f6cfc1fc31b80a9f37a83eaa98f2da2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ321600182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d7fd35a431f325dff96cffdfcc691854cd1bd1ccf21d645f812bdaf1a14c91. 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/DEQ321600197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002d5c7471970ffc37a8e0eab0c7abf11359829afb2aa5e583746a75dbfc14c. 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/DEQ321600183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5bdecdd7ff29cc1ee17722a80bbff0aed82ee190acc853cf66fb8709f28e21. 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/DEQ321600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67441b02f8d0881f454d74a7787931ac08263bca065348b6a02cafab8d327bd. 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/DEQ321600184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e31a4adbd710b24496bf51dc1d9faf6d8c31ffac1a3e07ef78cdcf50e02731. 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/DEQ321600199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d814e63e7f8f7345262308dfae4515d13d729fba15e752f059d6f673bad944d. 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/DEQ321600185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297eeae01248d62dc0d95d3b58dcc6c3623a6ba991e22d1d57c754a6b28a651d. 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/DEQ321600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f780be7ba34848e369072e9bc0e0ae41f999647916a5abff3b52ac8beb34ca1. 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/DEQ321600186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b4f600e3040a156ec70b19b37a1f05ee75b64c5756fa67c51b9a8d48271db2. 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/DEQ321600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cb8e1a799c259e37e5342dc08af5c3511f4b5ee5f387cb79abe709d49ff417. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ321600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd87b80c268facf4c5d7a72739054a36785d7953ab3a43193df55a0273a2f0e. 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/DEQ321600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c480b3954d106792c194e54d71d64007ee59a2e1befd0f424400f8147177c. 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/DEQ321600188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde3aa55309e6170bc629005034676340bba8140e20de3f12bd7133ecc324ba2. 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/DEQ321600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea0ad8cca82aef07c8425529328f82f6357ea89d28822a5658bbfad3e605b90. 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/DEQ321600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec4e2a456906149f799cef2d84d241d6cf0579b492e58a1bad943fcebd78652. 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/DEQ321600190.