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 0x8c04d3d280f65933c09c1bd3cf8f3f138c2b3b346c1cb2f6ef24ca6c857755e8. 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/8c7194c0-a141-4ca1-b805-4e650b314fb0.json and https://artists.proofprofile.net/proofs/artist/8c7194c0-a141-4ca1-b805-4e650b314fb0.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 0x76b10677a4cc8eafbc25cf0709016c0e16a0d5d8914eacbeb895752f93833b40. 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/GXF9Q2540927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87947fa2e409af4972f6011afaa96864313a9847b1fd8fcc3fba7dee239786d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:55Z), 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/GXF9Q2540928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c3558912f7293e9a1a8b04426080db639133394cc9778226a5a6f53db284f. 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/GXF9Q2540929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c79b1848681e9aa067f9541f5b02ac19193b9768bfb3b5aece8ea1315f3c22. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXF9Q2540930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad614573d16dd6badd5b286098642419fda8c3dc7c4eea3ce17b29f920154c91. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:21:36Z), 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/GXF9Q2540931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0ee9ab6311059759c69951c695655317a9e6b074e1106de0668f1e0646e935. 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/GXF9Q2540932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81cc2bef587d8a8b9664dc6dd6ad1c48e3299040c43ac55978d7a52d539ce74. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:34Z), 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/GXF9Q2540933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fd36112b3e1bce4e9b7d9175abea134cec81de491e7f51fec3da162939d9af. 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/GXF9Q2540934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010f2e0569436e964fe1915f1c30b2781b592ea64a0f450786615cf8fb6a93fa. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GXF9Q2540935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c075c0d51fa0665c4e3c427ee6458ca018f004e1a0a637047e7c869be499fd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:15Z), 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/GXF9Q2566947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153846292d9c991f09e97ef8c398ea5f10ed66458797620c341e3ca470870664. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:37Z), 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/GXF9Q2566948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2e1420eef8c95ea35fc49404961844f89a28b34462b5536a33a43ca0d8913b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXF9Q2566949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04055724894e6cb3055ac5f5613f854548bd93ea3b15f3ffbc01c2d7896a1300. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:26Z), 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/GXF9Q2566950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cf91f1472d00cc13693a7c5ebabdd8e87ebacb7211314dc703686d25885673. 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/GXF9Q2566951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecded178e0f585842ec3bc3b79d72870b8ea0952327787aa4a5f2f7f7c45c9b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXF9Q2566952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeeb73e26f9d542d8f61b464f39e5ba0c3dfe7692f99eed11d752f2739e4689. 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/GXF9Q2566953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c349e50e1880fe4813dbc7bca2cdcd6e723227597e645d8eb0bc0033a446edb. 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/GXF9Q2566954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5918d7318a8a48e2224dab01cbe04ed02f3f89d6dc6a31dd23bf6b30ad5757. 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/GXF9Q2592849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdb2caa9b371a2156e63577542522dc603ab28c9e53721e8109a81bff572a2a. 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/GXF9Q2599479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792801ca41afe28f555758e8a6944910f46732a26ea54de132e3e7566abd662a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:37Z), 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/GXF9Q2599480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85b435ef2cbbf2274c75382a4b8d562e9c657bc2cb76cd56f96bf80e2256006. 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/GXF9Q2599482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12a8ec8ae44272581d7b1515a9ed8478eccc9675bb03c5901e1a4f4bab1b3ed. 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/GXF9Q2599484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac4dcf13709dbf0c364d85585ff9642d0d19818ea39a3d22d3855887eee55ce. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:50:23Z), 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/GXF9Q2599485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860e0f6ed7025c0447162772abff23ed2e305113e98f49d7508d2c158a6750ea. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:10:19Z), 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/GXF9Q2599486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f721971a9a4bd00634fb5f1fbed8819bc6c7798ce2c882f5151c1a16ff81ef. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:42:41Z), 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/GXF9Q2599488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23ae61a5cb7aeb3201958410f7a14d64e16b9de4a5539d609e40486e594e863. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GXF9Q2599489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188fb4c7b0847910d61c03e5eacc73bea32f7dca5f99cc3525fe7c3a042a93ec. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:50:05Z), 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/GXF9Q2599490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65f4756feeb5df62072fcc6daa88935bb43fd769955a3a33cdffadbcc44102. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UKXN22502694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd6fbfb8369bad084c0305c517fc79828d10d96c699559932c39645061d740a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKXN22502684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c7acc296650d34554a1bb17d97b7c7b64bcd7c91bf90b4a7ef22d4cd88d3f4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:22Z), 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/UKXN22502690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efc758a2cf1668a167079ede9b1155aa4759c7678eb283e576af1e2117f1833. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:06Z), 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/UKXN22502693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edc44f134fa27643dc7351c67bc159f55fac22f0c3d43cbc95f97f0d43dcbc6. 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/UKXN22512241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71b4b92c06000485ebc5ed26a0d55460e4f3dc3c8059426053a7a80a9e4a59. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/UKXN22512243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7448bcde157b5f96a0c4360744c3ab370037ca47d63e4a152bcf698dcf570f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/UKXN22512248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660fc32ce8864480702affe7bdff055cb9af95b56956e23f00e9eee29b7cb40a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:59:45Z), 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/UKXN22512249.