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 0x59ed14f445061da01226f7fa8876136d4891935d6b393e43338d28fdded77996. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/104ad764-1454-48b0-8dad-e1f71e74e314.json and https://artists.proofprofile.net/proofs/artist/104ad764-1454-48b0-8dad-e1f71e74e314.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 0xafea1f4a6416d8c643dd28f5b9e973799e9dba0c580d56ca89a6ec1aab49e6d1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GX3Q92443922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d01e9ae77e8db83e292807f6ccc11f934eca3b23b2b92020bb931c435ce29b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX3Q92443923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5097bc04f111a4897f5cdac9f888ba6de8c8acc8e91517fa8eada0c5ab735481. 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/GX3Q92443925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc50b129ea3bb5aca24aef9fd06cb01786f0aa6074bb4c3cb913729701db63f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:27Z), 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/GX3Q92443926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2945ac35a6b2f14c867613c949b2df1d5d5ab10f3c237373bff6f0a009e960. 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/GX3Q92443927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10571f63fe0840e1ca58d07e7b13d2bcc0bad843109787a4dac6dcc715d947b9. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:23Z), 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/GX3Q92443928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a5f7166f148f69b8134c2ebb72d85065881b82473136add9e328ae66ba469c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GX3Q92443929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283cab0b883c88426fbf6469d684748298e5c1ccafe2b2d4b51f525266d5d429. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/UKXN22412815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd7934a3f10315cde0417b50fa7521e6e7c232866172aa4612af240a634e312. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKXN22412816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916fa2a0702b131e0bf77d442ed10b7c9fb588820c726d85c9ac3460a0a7ed8d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKXN22412817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa443ac20407bb570680b18a1c73c794a3e58a3058072aef0695d96a1ff87e5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKXN22412819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4c7d5ac5be03062e0f0031742247c75e806c9e35b7a4f284615904ce0889ca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:10Z), 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/UKXN22412822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a277582588bac827bd04a2e187078debd6079e331b754261bd0480071a86d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22440426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76257612010b30482884ef8fb116c56a129b947b8f60ea56e1557d62dd07af9b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:29Z), 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/GBMA22440427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b68233bc844a35fc00900d94e9a45241d40ec5f36cabacb56ce94c2b969a7ce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMA22440428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0ec9430e100e9174642bc7b57658c663cfe8f3098ebf4bc4313963afca4eb0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:54Z), 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/GBMA22440429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a81f35a058d38cca00d7864678a483f9673360d97a728962bc6b556858fe683. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:59Z), 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/GBMA22440431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0a660054bf23bd876652b69580acb7761585495d04467d7aff25f29de614c3. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:26Z), 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/GBMA22440432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccf44d75cce6f6b4ea22866ae940dbc8fcfd0a272dfd5e6d8db31814ace2e59. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA22440433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd0d3d78259181294deb7dc13308a7fe270528505947dfcb0da62e6e68fb951. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX53U2328016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8cbf8dca1fd5999e76f27139e130b68693100c67b3a40036617656a965d41. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX53U2328017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d8f4d126b2386c5c3e4783e37008ba9d5248ad52b5c657289f43b99b0a4f33. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GX53U2328018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870bdf72a99fff1295b15ea1db7f012334b24b103499009e3ef1a842de6b536. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2328019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b1663b0afe87c11d64f4b0f7ec5221edb987822f37fba2d7fd1504a111cd3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX53U2328020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ca41c84610389fc4930444fff77bd50dea54b39a5aaeec3464b7ec9ea9a42. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX53U2328021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb715ed3fed2c716d87c6e8cc7f0683ef14eef4d9b1b994536671c3d3dbe259. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2328022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4360a43d31dc8a2823478671caf773a9238c688d0b82a4a816292331619671. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX53U2328023.